USPP6922P - St. Augustine Grass `6-72-130-` - Google Patents

St. Augustine Grass `6-72-130-` Download PDF

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USPP6922P
USPP6922P US07/185,524 US18552488V US6922P US PP6922 P USPP6922 P US PP6922P US 18552488 V US18552488 V US 18552488V US 6922 P US6922 P US 6922P
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purple
augustine
common
texas
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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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  • the present invention relates to a new and distinct perennial St. Augustine grass selected from the progeny of a controlled pollination of a plant originating in Florida with the pollen of a cold tolerant selection obtained from Memphis, Tenn.
  • This purple anther, purple stigma genotype was labeled 6-72-130 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 6-72-130 St. Augustine turf
  • FIG. 2 shows a single spike of a 6-72-130 St. Augustine grass plant depicting purple anthers and purple stigmas protruding from several spikelets;
  • FIG. 3 is a photograph of a vegetative stolon of 6-72-130 St. Augustine grass.
  • Genotype 6-72-130 has a purple anther color, a purple stigma color, and an unreduced chromosome number of 18.
  • the internodes are shorter and flatter than most St. Augustine varieties.
  • Leaf blade measurements show that 6-72-130 generally has a shorter and narrower leaf blade than most varieties. From the standpoint of judging turf performance, the combination of shorter internodes, narrower leaf blades and shorter leaf blades results in a turf that is generally more dense, finer textured and produces fewer clippings.
  • Measurements of the spike and related structures indicate that 6-72-130 has a shorter and narrower spike, a shorter and narrower peduncle, an average length but narrower flag leaf and a shorter flag leaf sheath than other St. Augustine grasses.
  • the chromosome numbers, anther and stigma color and morphological measurements of 6-72-130 and other St. Augustine grasses are compared in Tables 1-4.
  • Color of turf is an important component of turf quality. 6-72-130 has a pleasant medium green color comparable to many other St. Augustine grasses. Other factors that have shown varietal differences include: tendency to turn brown during the winter, for which 6-72-130 is rated about average; susceptibility to Asulox (an important herbicide) to which 6-72-130 is not susceptible; tendency to have a flush of seedheads in the spring, for which 6-72-130 has a lower tendency than other varieties; purple stem color, especially during cold weather, for which 6-72-130 has a higher than average tendency; susceptibility to gray leaf spot to which 6-72-130 has good resistance; and susceptibility to chinch bugs to which 6-72-130 has shown no greater susceptibility than most other varieties. Data on turf color, winter browning, Asulox injury, seedheads, purple stems, gray leaf spot and chinch bugs are illustrated in Tables 8-12.

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Abstract

A perennial St. Augustine grass with purple anthers and purple stigmas having good turf performance, good cold tolerance, short internodes and leaves and good resistance to 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. Another St. Augustine grass which has been named "Delmar" was disclosed in U.S. Plant patent application Ser. No. 893,960, filed Aug. 7, 1986. A further St. Augustine grass designated 6-72-182 is disclosed in U.S. Plant patent application Ser. No. 07/185,523, filed of even date herewith.
SUMMARY OF THE VARIETY
The present invention relates to a new and distinct perennial St. Augustine grass selected from the progeny of a controlled pollination of a plant originating in Florida with the pollen of a cold tolerant selection obtained from Memphis, Tenn. This purple anther, purple stigma genotype was labeled 6-72-130 and propagated vegetatively by stolons to provide planting stock for studying performance and making comparisons to present commercial varieties.
The combination of purple stigma, purple anthers, short internode length, short leaf blade length, good cold tolerance, a high tendency for purple stems, and good resistance to gray leaf spot of 6-72-130 along with other information allow this genotype to be distinguished from other St. Augustine grasses.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a photograph of 6-72-130 St. Augustine turf;
FIG. 2 shows a single spike of a 6-72-130 St. Augustine grass plant depicting purple anthers and purple stigmas protruding from several spikelets; and
FIG. 3 is a photograph of a vegetative stolon of 6-72-130 St. Augustine grass.
DETAILED DESCRIPTION OF THE VARIETY
Genotype 6-72-130 has a purple anther color, a purple stigma color, and an unreduced chromosome number of 18. The internodes are shorter and flatter than most St. Augustine varieties. Leaf blade measurements show that 6-72-130 generally has a shorter and narrower leaf blade than most varieties. From the standpoint of judging turf performance, the combination of shorter internodes, narrower leaf blades and shorter leaf blades results in a turf that is generally more dense, finer textured and produces fewer clippings. Measurements of the spike and related structures indicate that 6-72-130 has a shorter and narrower spike, a shorter and narrower peduncle, an average length but narrower flag leaf and a shorter flag leaf sheath than other St. Augustine grasses. The chromosome numbers, anther and stigma color and morphological measurements of 6-72-130 and other St. Augustine grasses are compared in Tables 1-4.
              TABLE 1                                                     
______________________________________                                    
Chromosome numbers, anther color, and stigma color of 6-72-130            
and other St. Augustine grasses.                                          
              Chromosome   Anther   Stigma                                
Selection/Variety                                                         
              Number       Color    Color                                 
______________________________________                                    
6-72-130      18           Purple   Purple                                
6-72-182      18           Yellow   White                                 
Bitterblue    27           Yellow   Purple                                
Delmar        18           Yellow   White                                 
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             
6-72-130 and other St. Augustine grasses.                                 
             Internode.sup.(b)                                            
Selection/                                                                
          No. of   Length  Diameter (mm).sup.(c)                          
Variety   Nodes.sup.(a)                                                   
                   (cm)    Longest                                        
                                  Shortest                                
                                         Flat.sup.(d)                     
______________________________________                                    
6-72-130  5.2      5.6     2.7    1.9    1.44                             
6-72-182  --       4.8     2.8    2.2    1.32                             
Bitterblue                                                                
          --       6.9     2.7    2.1    1.30                             
Delmar    4.5      5.7     3.5    2.6    1.35                             
Floratam  4.1      7.5     3.2    2.5    1.25                             
Floratine --       5.8     2.7    2.2    1.30                             
Raleigh   4.5      7.0     3.2    2.5    1.27                             
Seville   4.8      6.8     2.7    2.2    1.25                             
Texas Common                                                              
          4.4      6.2     3.0    2.2    1.35                             
California                                                                
          --       4.2     2.4    2.0    1.22                             
Common                                                                    
1081      --       7.3     2.8    2.0    1.38                             
LSD (.05) --       1.15    0.24   0.27   0.091                            
______________________________________                                    
 .sup.(a) Number of nodes per six inch stolon at Cleveland, Texas.        
 .sup.(b) Greenhouse planting at Marysville, Ohio. Measurements taken on  
 unclipped potted plants using third internode from terminal end of stolon
 .sup.(c) Diameter measurements taken at the approximate center of the    
 internode which has an elliptical shaped cross section.                  
 .sup.(d) Flatness index equals longest axis divided by shortest axis. A  
 larger flatness index indicates a flatter shaped stem.                   
              TABLE 3                                                     
______________________________________                                    
Comparative Leaf Blade Length, Width and Sheath Length of                 
6-72-130 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)                      
______________________________________                                    
6-72-130  2.2      5.2     14.8  1.3    2.7                               
6-72-182  --       5.3     13.7  1.5    2.3                               
Delmar    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 6-72-130 and other St. Augustine grasses.sup.(a).           
______________________________________                                    
          Spike            Peduncle                                       
            Length  Width      Length                                     
                                     Width                                
Selection/Variety                                                         
            (mm)    (mm)       (mm)  (mm)                                 
______________________________________                                    
6-72-130    56      4.8        41    1.7                                  
6-72-182    60      4.3        52    1.6                                  
Delmar      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)                                        
______________________________________                                    
6-72-130   30         5.9     31                                          
6-72-182   16         6.0     30                                          
Delmar     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 6-72-130 indicate that it has generally good turf quality characteristics throughout the year and across the area of the United States where St. Augustine grass is adapted. It performs especially well in the climate of southern California. Although it performs best during the hotter summer months, it has good cold tolerance and performs well during the winter months. These characteristics of 6-72-130 as compared with other St. Augustine grasses are illustrated in Tables 5-7.
              TABLE 5                                                     
______________________________________                                    
Comparative turf quality.sup.(a) of 6-72-130 and other St. Augustine      
grasses at various locations in the U.S.                                  
         Turf Quality                                                     
         Florida.sup.(b)                                                  
                    Win-         Cali-                                    
Selection/Variety                                                         
           Summer   ter    Mean  fornia.sup.(c)                           
                                        Texas.sup.(d)                     
______________________________________                                    
6-72-130   8.2      7.6    7.8   7.9    7.0                               
6-72-182   9.3      8.3    8.7   --     --                                
Bitterblue 7.3      5.9    6.0   --     --                                
Calif. Common                                                             
           --       --     --    6.7    --                                
Delmar     9.8      9.0    9.6   5.9    7.0                               
Floratam   7.5      5.8    6.1   --     6.3                               
Floratine  7.2      6.1    6.4   --     --                                
Florida Common                                                            
           8.2      6.6    7.0   --     --                                
Raleigh    6.7      7.1    7.4   --     6.3                               
Seville    9.0      7.9    8.1   6.8    6.3                               
Texas Common                                                              
           6.5      8.4    8.0   4.6    8.3                               
1081       8.7      6.8    7.3   --     --                                
LSD (.05)   0.45     0.99   0.88        1.7                               
______________________________________                                    
 .sup.(a) Quality  rated 1-10, 10 = best.                                 
 .sup.(b) Test planted at Apopka, Florida                                 
 .sup.(c) Test planted at Somas, California                               
 .sup.(d) Test planted at Cleveland, Texas                                
              TABLE 6                                                     
______________________________________                                    
Comparative turf quality.sup.(a) of 6-72-130 and other St. Augustine      
grass varieties at the South Coast Field Station of the University        
of California - Riverside.                                                
           Turf Quality                                                   
Selection/Variety                                                         
             Summer      Winter  Mean                                     
______________________________________                                    
6-72-130     6.6         4.6     5.4                                      
6-72-182     5.8         4.5     5.0                                      
Calif. Common                                                             
             5.4         4.2     4.7                                      
Delmar       5.3         4.7     4.9                                      
Floratam     5.4         4.1     4.6                                      
Raleigh      4.6         3.3     3.9                                      
Texas Common 5.5         4.3     4.8                                      
LSD (.05)    0.50        0.44    0.39                                     
______________________________________                                    
 .sup.(a) Qualityrated 1-10, 10 = best.                                   
              TABLE 7                                                     
______________________________________                                    
Comparative cold injury of 6-72-130 and other St. Augustine               
grasses in Apopka, Florida.                                               
         Cold Injury (%)                                                  
Selection/Variety                                                         
           Expt. 1 Expt. 2  Expt. 3                                       
                                  Expt. 4                                 
                                         Mean                             
______________________________________                                    
6-72-130   35      17       38    18     27                               
6-72-182   21      5        35    28     22                               
Bitterblue 53      38       58    34     46                               
Delmar     0       0        17    3      5                                
Floratam   40      42       55    40     44                               
Floratine  48      32       37    26     36                               
Raleigh    32      12       37    24     28                               
Seville    35      15       37    24     28                               
Texas Common                                                              
           18      7        33    28     21                               
1081       47      33       48    33     40                               
LSD (.05)  20.9    18.5     26.1  23.5   16.5                             
______________________________________                                    
Color of turf is an important component of turf quality. 6-72-130 has a pleasant medium green color comparable to many other St. Augustine grasses. Other factors that have shown varietal differences include: tendency to turn brown during the winter, for which 6-72-130 is rated about average; susceptibility to Asulox (an important herbicide) to which 6-72-130 is not susceptible; tendency to have a flush of seedheads in the spring, for which 6-72-130 has a lower tendency than other varieties; purple stem color, especially during cold weather, for which 6-72-130 has a higher than average tendency; susceptibility to gray leaf spot to which 6-72-130 has good resistance; and susceptibility to chinch bugs to which 6-72-130 has shown no greater susceptibility than most other varieties. Data on turf color, winter browning, Asulox injury, seedheads, purple stems, gray leaf spot and chinch bugs are illustrated in Tables 8-12.
              TABLE 8                                                     
______________________________________                                    
Comparative color ratings of 6-72-130 and other St. Augustine             
grasses at various locations in the U.S.                                  
         Color.sup.(a)                                                    
         Florida.sup.(b)                                                  
                      California                                          
Selection/Variety                                                         
           Summer    Mean     Scfs.sup.(c)                                
                                     Somas.sup.(d)                        
______________________________________                                    
6-72-130   8.6       7.7      3.8    8.4                                  
6-72-182   9.8       8.5      3.9    --                                   
Bitterblue 8.5       7.6      --     --                                   
Calif. Common                                                             
           --        --       3.8    8.4                                  
Delmar     10.0      8.9      4.6    8.2                                  
Floratam   8.8       7.8      4.2    --                                   
Floratine  8.0       7.5      --     --                                   
Florida Common                                                            
           8.3       7.9      --     --                                   
Raleigh    7.0       6.5      3.4    --                                   
Seville    9.2       8.5      --     7.2                                  
Texas Common                                                              
           6.8       7.9      4.0    6.3                                  
1081       8.8       8.0      --     --                                   
LSD (.05)   0.48      0.67     0.35                                       
______________________________________                                    
 .sup.(a) Color rated 1-10, 10 = darkest green.                           
 .sup.(b) Test planted at Apopka, Florida.                                
 .sup.(c) Test planted at South Coast Field Station, University of        
 California  Riverside.                                                   
 .sup.(d) Test planted at Somas, California.                              
              TABLE 9                                                     
______________________________________                                    
Comparative ratings of various attributes of 6-72-130 and other St.       
Augustine grasses which detract from overall appearance.                  
Selection/Variety                                                         
            Brown.sup.(a)                                                 
                       Asulox.sup.(b)                                     
                                Seed Heads.sup.(c)                        
______________________________________                                    
6-72-130    6.3        5        7.7                                       
6-72-182    5.0        0        --                                        
Delmar      3.7        0        5.7                                       
Bitterblue  --         12       --                                        
Floratam    6.3        0        7.0                                       
Floratine   --         2        --                                        
Raleigh     8.3        10       3.0                                       
Seville     --         3        5.7                                       
Texas Common                                                              
            5.7        0        5.7                                       
California Common                                                         
            4.0        --       --                                        
1081        --         7        --                                        
LSD (.05)   2.0        5.3      2.3                                       
______________________________________                                    
 .sup.(a) Test planted at South Coast Field Station  University of        
 California  Rated as % brown turf.                                       
 .sup.(b) Test planted at Apopka, Florida  Rated as % injury.             
 .sup.(c) Test planted at Cleveland, Texas  Rated 0-9, 9 = no seedheads, 1
 = many seedheads.                                                        
              TABLE 10                                                    
______________________________________                                    
Comparative evaluations of purple stem color of 6-72-130 and              
other St. Augustine grasses.                                              
           Purple Stem Color.sup.(a)                                      
Selection/Variety                                                         
             Ohio.sup.(b)                                                 
                       Florida.sup.(c)                                    
                                California.sup.(d)                        
______________________________________                                    
6-72-130     8.3       30       4.3                                       
6-72-182     4.5       3        0                                         
Bitterblue   8.0       10       --                                        
Cal. Common  --        --       0.7                                       
Delmar       3.5       7        0.7                                       
Floratam     8.3       20       2.7                                       
Floratine    8.0       8        --                                        
Raleigh      6.0       28       1.7                                       
Seville      4.0       0        --                                        
Texas Common 4.5       8        1.0                                       
1081         7.5       58       --                                        
LSD (.05)    1.1       15       0.9                                       
______________________________________                                    
 .sup.(a) Purple stem color rated 1-10, 10 = stolons are very purple, 1 = 
 stolons are entirely green. For Florida, visual estimation of the level o
 stem purpling in percent.                                                
 .sup.(b) Test planted in the greenhouse at Marysville, Ohio.             
 .sup.(c) Test planted at Apopka, Florida.                                
 .sup.(d) Test planted at South Coast Field Station, University of        
 California  Riverside.                                                   
              TABLE 11                                                    
______________________________________                                    
Comparative ratings of gray leaf spot.sup.(a) of 6-72-130 and other St.   
Augustine grasses at Apopka, Florida.                                     
Selection/Variety                                                         
______________________________________                                    
6-72-130         1.7                                                      
6-72-182         1.7                                                      
Bitterblue       3.5                                                      
Delmar           1.0                                                      
Floratam         3.8                                                      
Floratine        2.6                                                      
Raleigh          0.7                                                      
Seville          0.8                                                      
Texas Common     2.4                                                      
1081             2.2                                                      
LSD (.05)        0.88                                                     
______________________________________                                    
 .sup.(a) Rated 1-10, 10 = most disease.                                  
              TABLE 12                                                    
______________________________________                                    
Comparative ratings of chinch bug tolerance.sup.(a) of 6-72-130 and       
other St. Augustine grasses.                                              
Selection/Variety                                                         
                 Florida.sup.(b)                                          
                          California.sup.(c)                              
______________________________________                                    
6-72-130         1.7      0.5                                             
6-72-182         3.0      --                                              
Delmar           2.0      0.0                                             
Bitterblue       5.0      --                                              
Floratam         7.0      --                                              
Floratine        2.7      --                                              
Raleigh          6.3      --                                              
Seville          5.7      0.3                                             
Texas Common     4.7      2.0                                             
California Common                                                         
                 --       3.0                                             
______________________________________                                    
 .sup.(a) Rated 1-10, 10 = severe damage.                                 
 .sup.(b) Test planted in the greenhouse at Apopka, Florida.              
 .sup.(c) Test planted at the South Coast Field Station, University of    
 California  Riverside.                                                   

Claims (1)

What is claimed is:
1. A St. Augustine grass, substantially as herein illustrated and described.
US07/185,524 1988-04-25 1988-04-25 St. Augustine Grass `6-72-130-` Expired - Lifetime USPP6922P (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
USPP35807P3 (en) 2022-08-22 2024-05-14 The Texas A&M University System Hybrid St. Augustinegrass named ‘DALSA 1618’

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
USPP35807P3 (en) 2022-08-22 2024-05-14 The Texas A&M University System Hybrid St. Augustinegrass named ‘DALSA 1618’

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