USPP6372P - St. Augustine grass - Google Patents

St. Augustine grass Download PDF

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USPP6372P
USPP6372P US06/893,960 US89396086V US6372P US PP6372 P USPP6372 P US PP6372P US 89396086 V US89396086 V US 89396086V US 6372 P US6372 P US 6372P
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sup
augustine
common
floratam
florida
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Wayne C. Mixson
Terrance P. Riordan
Virgil D. Meier
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OMS Investments Inc
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OM Scott and Sons Co
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  • This invention relates to a new and distinct perennial St. Augustine grass selected from the progeny of the controlled pollination of Seville with the pollen from a cold tolerant selection obtained from Memphis, Tenn.
  • This yellow anther, white stigma genotype was labeled 6-72-99 and propagated vegetatively by stolons to provide planting stock for studying performance and making comparisons to present commercial varieties.
  • FIG. 1 is a photograph of 6-72-99 St. Augustine turf
  • FIG. 2 shows a single spike of 6-72-99 St. Augustine grass plant depicting yellow anthers and white stigmas protruding from several spikelets.
  • Genotype 6-72-99 has a yellow anther color, a white stigma color, and an unreduced chromosome number of 18.
  • the internodes are shorter and thicker than most commonly grown St. Augustine grass cultivars.
  • Leaf blade length and leaf sheath length are significantly shorter than Floratam, a widely grown cultivar in Florida and Texas.
  • Floratam is noted for its poor shade performance in contrast to most St. Augustine grasses.
  • the blade width of 6-72-99 is equal to or wider than other St. Augustine grasses.
  • Color of turf is an important component of turf quality. 6-72-99 has a pleasing green color throughout the year. In addition, minimizing loss of green color due to herbicide injury, cold, or other causes is also important in maintaining good quality turf for 6-72-99. Besides green color or loss of green color, St. Augustine grasses have a tendency to have a purple coloring in the stem. 6-72-99 has a low level of purpling in the stems. Minimizing the number of seedheads in turf is also important in maintaining high quality turf. 6-72-99 has a medum level of flowering shoots in turf. This information is illustrated in Tables 8, 9 and 10.
  • Tolerance to various diseases and insects is important for maintaining good quality turf with minimum levels of pesticides.
  • 6-72-99 has shown resistance to St. Augustine grass Decline Virus inoculations in the laboratory. In field studies, it has shown a good level of resistance to gray leaf spot (Pyricularia grisea) and dollarspot (Curvularia sp.). Tolerance to insects is an extremely difficult characteristic to measure accurately.
  • chinchbugs Blissus sp.
  • sod webworm Crambus sp.

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  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)

Abstract

A perennial St. Augustine grass having outstanding cold tolerance, along with good resistance to St. Augustine Decline Virus and gray leaf spot.

Description

BACKGROUND
A St. Augustine grass which has been named "Seville" was disclosed in U.S. Plant Pat. No. 4,097, which issued on Sept. 6, 1977.
SUMMARY OF THE VARIETY
This invention relates to a new and distinct perennial St. Augustine grass selected from the progeny of the controlled pollination of Seville with the pollen from a cold tolerant selection obtained from Memphis, Tenn. This yellow anther, white stigma genotype was labeled 6-72-99 and propagated vegetatively by stolons to provide planting stock for studying performance and making comparisons to present commercial varieties.
The excellent cold tolerance, good overall appearance, and good resistance to St. Augustine Decline Virus and gray leaf spot of 6-72-99 along with other information, allow this genotype to be distinguished from other St. Augustine grasses.
BRIEF DESCRIPTION OF THE ILLUSTRATIONS
FIG. 1 is a photograph of 6-72-99 St. Augustine turf;
FIG. 2 shows a single spike of 6-72-99 St. Augustine grass plant depicting yellow anthers and white stigmas protruding from several spikelets.
DETAILED DESCRIPTION OF THE VARIETY
Genotype 6-72-99 has a yellow anther color, a white stigma color, and an unreduced chromosome number of 18. The internodes are shorter and thicker than most commonly grown St. Augustine grass cultivars. Leaf blade length and leaf sheath length are significantly shorter than Floratam, a widely grown cultivar in Florida and Texas. The difference between 6-72-99 and Floratam in leaf blade length is accentuated under low light growing conditions. Floratam is noted for its poor shade performance in contrast to most St. Augustine grasses. The blade width of 6-72-99 is equal to or wider than other St. Augustine grasses. Measurements of the spike and related structures indicate that 6-72-99 has a longer spike, a longer peduncle, and a longer flag leaf sheath than other St. Augustine grasses except for Floratam. The chromosome numbers, anther and stigma color and morphological measurements of 6-72-99 and other St. Augustine grasses are compared in Tables 1, 2, 3 and 4.
              TABLE 1                                                     
______________________________________                                    
Chromosome numbers, anther color and stigma color of                      
6-72-99 and other St. Augustine grasses.                                  
              Chromosome   Anther   Stigma                                
Selection/Variety                                                         
              Number       Color    Color                                 
______________________________________                                    
6-72-99       18           Yellow   White                                 
Bitterblue    27           Yellow   Purple                                
Floratam      27           Yellow   Purple                                
Floratine     27           Yellow   Purple                                
Raleigh       18           Yellow   White                                 
Seville       18           Yellow   Purple                                
Texas Common  18           Yellow   White                                 
California Common                                                         
              18           Yellow   White                                 
1081          18           Purple   Purple                                
______________________________________                                    
              TABLE 2                                                     
______________________________________                                    
Comparative measurements of internode length and thickness                
of 6-72-99 and other St. Augustine grasses.                               
                        Internode                                         
          Internode Length (cm)                                           
                        Thickness (mm)                                    
Selection/Variety                                                         
            Florida.sup.(a)                                               
                      Ohio.sup.(b,c)                                      
                                Ohio.sup.(b)                              
______________________________________                                    
6-72-99     4.1       5.7       3.5                                       
Bitterblue  3.7       6.9       2.7                                       
Floratam    6.3       7.5       3.2                                       
Floratine   4.7       5.8       2.7                                       
Raleigh     5.8       7.0       3.2                                       
Seville     4.5       6.8       2.7                                       
Texas Common                                                              
            --        6.2       3.0                                       
California Common                                                         
            --        4.2       2.4                                       
1081        3.9       7.3       2.8                                       
LSD (.05)    1.00     1.15      .24                                       
______________________________________                                    
 .sup.(a) Field planting  Fort Lauderdale, Florida. Average length of thir
 to seventh internodes on terminal end of stolon.                         
 .sup.(b) Greenhouse planting  Marysville, Ohio. Measurements taken on    
 unclipped potted plants.                                                 
 .sup.(c) Length of third internode from terminal end of stolon.          
              TABLE 3                                                     
______________________________________                                    
Comparative Leaf Blade Length, Width and Sheath Length of                 
6-72-99 and other St. Augustine grasses.                                  
        Blade Length (cm)                                                 
                       Blade    Sheath                                    
             Ohio.sup.(b)                                                 
                       Width.sup.(c)                                      
                                Length.sup.(c)                            
Selection/         High.sup.(c)                                           
                           Low.sup.(d)                                    
                                 (cm)   (cm)                              
Variety   Texas.sup.(a)                                                   
                   Light   Light Ohio.sup.(b)                             
                                        Ohio.sup.(b)                      
______________________________________                                    
6-72-99   3.0      7.3     16.7  1.8    3.3                               
Bitterblue                                                                
          --       7.4     17.5  1.5    2.8                               
Floratam  6.6      10.1    27.2  1.7    4.5                               
Floratine --       8.6     16.3  1.4    3.2                               
Raleigh   3.9      7.8     13.8  1.7    3.7                               
Seville   2.9      6.9     18.4  1.4    2.9                               
Texas Common                                                              
          2.7      8.1     16.6  1.7    3.6                               
California                                                                
          --       3.8     11.8  1.2    2.2                               
Common                                                                    
1081      --       7.8     15.2  1.5    3.2                               
LSD(.05)   .77     2.03    3.25  0.17   0.71                              
______________________________________                                    
 .sup.(a) Field Planting  Cleveland, Texas.                               
 .sup.(b) Greenhouse Planting  Marysville, Ohio. Measurements taken on    
 unclipped potted plants.                                                 
 .sup.(c) After a period of natural sunlight and a high level supplemental
 light.                                                                   
 .sup.(d) After a lengthy period of very cloudy conditions and no         
 supplemental light.                                                      
              TABLE 4                                                     
______________________________________                                    
Comparative measurements of the inflorescence and related                 
structures of 6-72-99 and other St. Augustine grasses.sup.(a).            
______________________________________                                    
           Spike       Peduncle                                           
             Length  Width     Length                                     
                                     Width                                
Selection/Variety                                                         
             (mm)    (mm)      (mm)  (mm)                                 
______________________________________                                    
6-72-99      93      5.3       68    2.1                                  
Bitterblue   78      5.6       61    2.2                                  
Floratam     96      5.9       83    2.4                                  
Floratine    74      5.8       48    2.3                                  
Raleigh      72      5.8       62    2.2                                  
Seville      71      4.9       50    1.9                                  
Texas Common 68      4.9       42    1.9                                  
1081         78      5.2       60    1.9                                  
LSD(.05)     10.0    .64       18.3  0.28                                 
______________________________________                                    
          Flag Leaf  Flag Leaf Sheath                                     
           Length    Width   Length                                       
Selection/Variety                                                         
           (mm)      (mm)    (mm)                                         
______________________________________                                    
6-72-99    21        6.7     46                                           
Bitterblue 22        6.4     44                                           
Floratam   35        6.3     46                                           
Floratine  27        7.2     39                                           
Raleigh    25        7.5     42                                           
Seville    15        5.8     38                                           
Texas Common                                                              
           29        7.1     39                                           
1081       25        6.3     39                                           
LSD(.05)   12.4      1.08    6.7                                          
______________________________________                                    
 .sup.(a) Greenhouse planting  Marysville, Ohio.                          
Field observations of 6-72-99 indicate that it has generally good turf quality characteristics throughout the year. However, it excels during the cooler winter and early spring months in its turf quality and its ability to avoid injury to occasional cold and freezing temperatures. These characteristics of 6-72-99 as compared with other St. Augustine grasses is illustrated in Tables 5, 6 and 7.
              TABLE 5                                                     
______________________________________                                    
Comparative turf quality.sup.(a) of 6-72-99 and other                     
St. Augustine grasses at various locations in the U.S.                    
        Turf Quality                                                      
        Florida                                                           
             Fort     California                                          
             Lauderdale                                                   
                      SCFS.sup.(h)                                        
Selection/         Expt   Expt  Expt Expt                                 
Variety   Apopka.sup.(b)                                                  
                   1.sup.(c)                                              
                          2.sup.(d)                                       
                                3.sup.(e)                                 
                                     4.sup.(f)                            
                                          Somas.sup.(g)                   
______________________________________                                    
6-72-99   7.4      7.5    5.8   6.1  4.7  4.9                             
Bitterblue                                                                
          6.2      5.6    5.9   --   --   --                              
Floralawn --       --     7.1   --   --   --                              
Floratam  5.9      6.5    7.2   --   3.9  --                              
Floratine 6.2      5.3    6.2   --   --   --                              
Raleigh   6.6      3.0    --    --   3.6  --                              
Seville   7.8      7.3    6.3   6.7  --   5.3                             
Texas Common                                                              
          7.5      --     --    5.9  4.5  3.6                             
California                                                                
          --       --     --    6.1  4.6  5.3                             
Common                                                                    
1081      7.2      6.1    5.5   --   --   --                              
______________________________________                                    
 .sup.(a) Quality  rated 1-10, 10 = best.                                 
 .sup.(b) Mean over 4 years with a total of 8 evaluations.                
 .sup.(c) Mean of 5 dates of evaluations.                                 
 .sup.(d) Mean of 15 dates of evaluations.                                
 .sup.(e) Mean of 25 dates of evaluations.                                
 .sup.(f) Mean of 6 dates of evaluations.                                 
 .sup.(g) Mean of 2 dates of evaluations.                                 
 .sup.(h) South Coast Field Station  University of California.            
              TABLE 6                                                     
______________________________________                                    
Comparative turf quality.sup.(a) of 6-72-99 and other                     
St. Augustine grasses during the winter season or                         
early spring at various locations in the U.S.                             
          Turf Quality                                                    
            Apopka.sup.(b)                                                
                      Cleveland.sup.(c)                                   
                                  SCFS.sup.(d)                            
Selection/Variety                                                         
            Florida   Texas       California                              
______________________________________                                    
6-72-99     9.9       6.4         5.4                                     
Bitterblue  5.0       --          --                                      
Floratam    5.6       6.0         --                                      
Floratine   5.8       6.0         --                                      
Raleigh     7.7       --          --                                      
Seville     7.8       6.2         4.5                                     
Texas Common                                                              
            8.9       6.2         4.2                                     
California Common                                                         
            --        --          4.6                                     
1081        6.4       4.8         --                                      
______________________________________                                    
 .sup.(a) Quality  rated 1-10, 10 = best.                                 
 .sup.(b) Mean of 3 dates of evaluations.                                 
 .sup.(c) Mean of 5 dates of evaluations.                                 
 .sup.(d) South Coast Field Station  University of California  Mean of 6  
 dates of evaluations.                                                    
              TABLE 7                                                     
______________________________________                                    
Comparative cold injury of 6-72-99 and other                              
St. Augustine grasses in Apopka, Florida.                                 
           Cold Injury (%)                                                
Selection/Variety                                                         
             Expt. 1     Expt. 2 Mean                                     
______________________________________                                    
6-72-99      0           0        0                                       
Bitterblue   53          38      45                                       
Floratam     40          42      41                                       
Floratine    48          32      40                                       
Raleigh      32          12      22                                       
Seville      35          15      25                                       
Texas Common 18          7       12                                       
1081         47          33      40                                       
LSD(.05)     20.9        18.5                                             
______________________________________                                    
Color of turf is an important component of turf quality. 6-72-99 has a pleasing green color throughout the year. In addition, minimizing loss of green color due to herbicide injury, cold, or other causes is also important in maintaining good quality turf for 6-72-99. Besides green color or loss of green color, St. Augustine grasses have a tendency to have a purple coloring in the stem. 6-72-99 has a low level of purpling in the stems. Minimizing the number of seedheads in turf is also important in maintaining high quality turf. 6-72-99 has a medum level of flowering shoots in turf. This information is illustrated in Tables 8, 9 and 10.
              TABLE 8                                                     
______________________________________                                    
Comparative color ratings of 6-72-99 and other                            
St. Augustine grasses at various locations in the U.S.                    
______________________________________                                    
             Color.sup.(a)                                                
             Florida                                                      
Selection/Variety                                                         
               Apopka.sup.(b)                                             
                        Fort Lauderdale.sup.(c)                           
______________________________________                                    
6-72-99        8.9      1.8                                               
Bitterblue     7.9      3.0                                               
Floratam       8.4      2.9                                               
Floratine      7.9      2.9                                               
Raleigh        7.1      2.0                                               
Seville        8.8      2.0                                               
Texas Common   8.0      --                                                
California Common                                                         
               --       --                                                
1081           8.5      1.3                                               
______________________________________                                    
          Color.sup.(a)                                                   
          California    Texas                                             
Selection/Variety                                                         
            Somas.sup.(d)                                                 
                       SCFS.sup.(e)                                       
                                Cleveland.sup.(f)                         
______________________________________                                    
6-72-99     7.9        7.0      6.8                                       
Bitterblue  --         --       --                                        
Floratam    --         --       6.8                                       
Floratine   --         --       6.8                                       
Raleigh     --         --       --                                        
Seville     7.5        8.6      6.7                                       
Texas Common                                                              
            5.9        4.2      6.8                                       
California Common                                                         
            7.7        6.5      --                                        
1081        --         --       5.6                                       
______________________________________                                    
 .sup.(a) Color rated 1-10, 10  darkest green unless noted otherwise.     
 .sup.(b) Mean of 8 evaluations.                                          
 .sup.(c) Rated 1-3, 3 = darker green.                                    
 .sup.(d) Mean of 3 evaluations.                                          
 .sup.(e) South Coast Field Station                                       
 .sup.(f) Mean of 5 evaluations.                                          
              TABLE 9                                                     
______________________________________                                    
Comparative ratings of various attributes of 6-72-99 and other            
St. Augustine grasses which detract from overall appearance.              
Selection/         Dis-    Chlo-        Seed                              
Variety   Brown.sup.(a)                                                   
                   color.sup.(b)                                          
                           rosis.sup.(c)                                  
                                 Asulox.sup.(d)                           
                                        Heads.sup.(e)                     
______________________________________                                    
6-72-99   3.7      1       20.0  0      400                               
Bitterblue                                                                
          --       --      14.5  12     200                               
Floralawn --       --      --    --     120                               
Floratam  6.3      --      11.0  0       60                               
Floratine --       --       7.5  2       80                               
Raleigh   8.3      --      10.0  10     --                                
Seville   --       0       17.5  3      1110                              
Texas Common                                                              
          5.7      0       17.0  0      --                                
California                                                                
          4.0      4       --    --     --                                
Common                                                                    
1081      --       --      14.5  7      650                               
______________________________________                                    
 .sup.(a) South Coast Field Station  University of California  Rated as % 
 brown turf.                                                              
 .sup.(b) South Coast Field Station  Rated as % discolored turf.          
 .sup.(c) Apopka, Florida  Rated as % chlorotic turf.                     
 .sup.(d) Apopka, Florida  Rated as % injury.                             
 .sup.(e) Fort Lauderdale, Florida  Rated as the number of seedheads per  
 square meter.                                                            
              TABLE 10                                                    
______________________________________                                    
Comparative evaluations of purple stem color of                           
6-72-99 and other St. Augustine grasses.                                  
       Purple Stem Color.sup.(a)                                          
              Florida                                                     
Selection/                                                                
         Ohio       Fort             California                           
Variety  Marysville.sup.(b)                                               
                    Lauderdale                                            
                              Apopka SCFS                                 
______________________________________                                    
6-72-99  3.5        4.5        5     0.7                                  
Bitterblue                                                                
         8.0        5.3       30     --                                   
Floratam 8.3        6.1       33     2.7                                  
Floratine                                                                 
         8.0        6.3       10     --                                   
Raleigh  6.0        4.0       14     1.7                                  
Seville  4.0        4.5        1     --                                   
Texas    4.5        --         9     1.0                                  
Common                                                                    
1081     7.5        5.9       52     --                                   
LSD(.05) 1.1                         0.9                                  
______________________________________                                    
 .sup.(a) Purple stem color rated 1-10, 10 = stolons are very purple, 1 = 
 stolons are entirely green. For Apopka, visual estimation of the level of
 stem purpling in percent.                                                
 .sup.(b) Test planted in the greenhouse.                                 
Tolerance to various diseases and insects is important for maintaining good quality turf with minimum levels of pesticides. 6-72-99 has shown resistance to St. Augustine grass Decline Virus inoculations in the laboratory. In field studies, it has shown a good level of resistance to gray leaf spot (Pyricularia grisea) and dollarspot (Curvularia sp.). Tolerance to insects is an extremely difficult characteristic to measure accurately. For chinchbugs (Blissus sp.) and sod webworm (Crambus sp.), 6-72-99 has shown tolerance levels equal to most other St. Augustine grasses.
              TABLE 11                                                    
______________________________________                                    
Comparative disease ratings of 6-72-99 and                                
other St. Augustine grasses.                                              
        Gray Leaf Spot.sup.(a)                                            
                        Dollarspot.sup.(d)                                
Selection/                                                                
          Apopka.sup.(b)                                                  
                   Fort Lauderdale.sup.(c)                                
                                Fort Lauderdale                           
Variety   Florida  Florida      Florida                                   
______________________________________                                    
6-72-99   1.0      4.0          0.0                                       
Bitterblue                                                                
          3.5      6.6          0.2                                       
Floratam  3.8      4.0          0.0                                       
Floratine 2.6      7.0          0.5                                       
Raleigh   0.7      3.6          --                                        
Seville   0.8      3.8          0.0                                       
Texas Common                                                              
          2.4      --           --                                        
1081      2.2      2.7          0.3                                       
______________________________________                                    
 .sup.(a) Rated 1-10, 10 = most disease.                                  
 .sup.(b) Mean of two evaluations.                                        
 .sup.(c) Mean of two evaluations.                                        
 .sup.(d) Rating based on number of spots per square meter.               
              TABLE 12                                                    
______________________________________                                    
Comparative ratings of insect tolerance of 6-72-99 and                    
other St. Augustine grasses.                                              
          Chinchbugs.sup.(a)                                              
                        Sod Webworms.sup.(b)                              
Selection/Variety                                                         
            Florida.sup.(c)                                               
                      California.sup.(d)                                  
                                Florida.sup.(e)                           
______________________________________                                    
6-72-99     2.0       0.0       49                                        
Bitterblue  5.0       --        24                                        
Floratam    7.0       --        18                                        
Floratine   2.7       --        24                                        
Raleigh     6.3       --        44                                        
Seville     5.7       0.3       39                                        
Texas Common                                                              
            4.7       2.0       --                                        
California Common                                                         
            --        3.0       --                                        
______________________________________                                    
 .sup.(a) Rated 1-10, 10 = severe damage.                                 
 .sup.(b) Rated as % damage.                                              
 .sup.(c) Planted in the greenhouse at Apopka, Florida.                   
 .sup.(d) South Coast Field Station, University of California.            
 .sup.(e) Planted in containers at Fort Lauderdale, Florida. Mean of two  
 evaluations.                                                             

Claims (1)

What is claimed is:
1. A St. Augustine grass, substantially as herein illustrated and described.
US06/893,960 1986-08-07 1986-08-07 St. Augustine grass Expired - Lifetime USPP6372P (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USPP9395P (en) * 1994-04-06 1995-12-05 Sod Solutions, Inc. St. Augustine grass `SS-100`
USPP9671P (en) * 1995-02-23 1996-10-22 Warren's Turf Group, Inc. St. Augustinegrass named `W-1`
USPP9804P (en) * 1995-08-08 1997-02-11 Warren's Turf Group, Inc. `Ala` St. Augustinegrass
US20240065122P1 (en) * 2022-08-22 2024-02-22 The Texas A&M University System Hybrid st. augustinegrass named 'dalsa 1618'

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USPP9395P (en) * 1994-04-06 1995-12-05 Sod Solutions, Inc. St. Augustine grass `SS-100`
USPP9671P (en) * 1995-02-23 1996-10-22 Warren's Turf Group, Inc. St. Augustinegrass named `W-1`
USPP9804P (en) * 1995-08-08 1997-02-11 Warren's Turf Group, Inc. `Ala` St. Augustinegrass
US20240065122P1 (en) * 2022-08-22 2024-02-22 The Texas A&M University System Hybrid st. augustinegrass named 'dalsa 1618'
USPP35807P3 (en) * 2022-08-22 2024-05-14 The Texas A&M University System Hybrid St. Augustinegrass named ‘DALSA 1618’

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