USPP7490P - Macadamia named "Hidden Valley A4" - Google Patents

Macadamia named "Hidden Valley A4" Download PDF

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USPP7490P
USPP7490P US07/344,279 US34427989V US7490P US PP7490 P USPP7490 P US PP7490P US 34427989 V US34427989 V US 34427989V US 7490 P US7490 P US 7490P
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tree
medium
med
nut
keauhou
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Henry F. D. Bell
Margaret A. Bell
David J. D. Bell
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01HNEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
    • A01H6/00Angiosperms, i.e. flowering plants, characterised by their botanic taxonomy
    • A01H6/54Leguminosae or Fabaceae, e.g. soybean, alfalfa or peanut

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  • the present invention is directed to a new and distinct variety of Macadamia tree believed to be a cross of Macadamia integrifolia ⁇ tetraphylla which was identified in a cultivated area.
  • this tree is a combination of an increase in leaf serrations per unit distance and a ratio of 1:1 between 3-leaf and 4-leaf whorls as sampled over a sample of a minimum 100 specimens.
  • FIG. 1 shows a typical tree specimen of the new variety, named "Hidden Valley A4".
  • FIG. 2 shows typical nut clusters of the new variety.
  • FIG. 3 shows a comparison of the leaves of the new variety with those of the known variety ⁇ HAES 246 ⁇ .
  • FIG. 4 shows a comparison of the kernel and nut of the new variety with the kernal and nut of the known variety ⁇ HAES 246 ⁇ .
  • FIG. 5 shows an enlarged view of the kernel and nut of the new variety.
  • the variety results from a seedling derived from the open pollination of a female parent of the variety Renown, itself a hybrid of M. integrifolia ⁇ M. tetraphylla.
  • the seedling may have arisen from self-pollination or from cross-pollination with the nearest possible pollinators being of the varieties Own Choice, Keauhou, Kakea and N.R.G. Based on morphological comparison, the most likely pollen parent is Own Choice.
  • the cultivar has been successfully and successively grafted onto a variety of rootstock yielding trees of consistent character and having good yield characteristics, while maintaining kernel quality and beneficial growth characteristics. The cultivar was discovered and propagated at Hidden Valley Plantations, Beerwah, Queensland, Australia.
  • Tree The tree is semi-erect in habit (more than Keauhou but less than Nutty Glen), moderately branched with a canopy of medium density (more dense than Hidden Valley A16 but less dense than Keauhou or Own Choice). The branches are more drooping than Keauhou. Leaves are found with both three and four leaves per node in a 1:1 ratio throughout the tree, unlike Keauhou and Kau which have predominantly three leaves per node and Renown which has predominantly four leaves per node. The grafted stock is strongly vigorous with shoots of medium thickness (thinner than Own Choice but thicker than Hidden Valley A16) with a mean of 42 mm between nodes, which sparse pubescence and weak anthocyanin coloration (R.H.S. color 152A) on new flushes. The tree has a relatively short juvenile phase (shorter than Keauhou or Kau) and a higher tolerance to Cercospora husk spot than observed for Own Choice.
  • Leaves The leaves are narrow elliptical with a mean 3.69 times longer than wide, broader than Nutty Glen or Renown but narrower than Keauhou or Kau with an acutely pointed tip similar to Renown.
  • the leaves are serrate with a mean 1.36 spines per cm which is characteristic and more than any known variety. Serrations are more shallow than Nutty Glen and spines are shorter than Renown.
  • Leaves are only weakly undulated and weakly rolled compared with Keauhou.
  • the young leaves are pale green (R.H.S. 137B) and mature leaves are dark green (R.H.S. 139A) and dull surfaced (similar to Nutty Glen) with distinctly lighter margins (R.H.S. 10A).
  • the racemes are cream colored, larger than Keauhou or Kau, and very dense on the tree.
  • the tree has a shorter flowering period than Keauhou, which starts earlier and finishes later, but a longer flowering period than Hidden Valley A16.
  • the tree has a tendency to have a second late flowering in seasons with favorable rainfall.
  • the husk is of medium thickness (similar to Keauhou, thinner than Renown) with a medium hilum end point (smaller than Renown and larger than Kau) and a mildly shouldered pedicel (less than Own Choice). Husk dehiscence is partly on the tree (less than Nutty Glen and Renown) but mainly on the ground. There is an average of 1.7 nuts per raceme. There is no pre-germination on the tree observed (as in Nutty Glen) and very low incidence of fruit remaining on the tree or double embryo fruit as compared with Own Choice.
  • the nuts are oval, 1.04 times longer than wider, less oval and more even than Renown but less round than Keauhou.
  • the shell is light brown (R.H.S. 164A) with a smooth surface (smoother than Nutty Glen or Renown but more coarse than Kau) and a moderate sheen (more than Nutty Glen but less than Keauhou).
  • the shell is thinner at the micropyle end (thinner than Kau but thicker than Nutty Glen).
  • the suture is about the same color as the shell while the micropyle is barely visible. No twin mark is evident.
  • Kernel The kernel is ovoid, creamy white with very little upper/lower color difference and a mean weight of 3.5 gm. The kernel averages about 45% of the weight of the nut at 1.5% moisture content. All kernels have an oil accumulation about above 72% (100% first grade floaters recorded).

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Natural Medicines & Medicinal Plants (AREA)
  • Physiology (AREA)
  • Botany (AREA)
  • Developmental Biology & Embryology (AREA)
  • Environmental Sciences (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)

Abstract

A new variety of Macadamia hybrid Integrifolia×tetraphylla has been identified that is particularly characterized by its high number of serrations per unit length on its leaf edge and a ratio of 1:1 between 3-leaf and 4-leaf whorls.

Description

The present invention is directed to a new and distinct variety of Macadamia tree believed to be a cross of Macadamia integrifolia×tetraphylla which was identified in a cultivated area.
Among the distinct characteristics of this tree is a combination of an increase in leaf serrations per unit distance and a ratio of 1:1 between 3-leaf and 4-leaf whorls as sampled over a sample of a minimum 100 specimens.
Asexual reproduction of the new variety has been accomplished by grafting scion stock taken from the original seedling plant onto both seedling and mature rootstock of various other Macadamia varieties. The variety has maintained character regardless of rootstock, and exhibitied the following characteristics and distinctions true to form through succeeding propagations.
DESCRIPTION OF DRAWINGS
FIG. 1 shows a typical tree specimen of the new variety, named "Hidden Valley A4".
FIG. 2 shows typical nut clusters of the new variety.
FIG. 3 shows a comparison of the leaves of the new variety with those of the known variety `HAES 246`.
FIG. 4 shows a comparison of the kernel and nut of the new variety with the kernal and nut of the known variety `HAES 246`.
FIG. 5 shows an enlarged view of the kernel and nut of the new variety.
The variety results from a seedling derived from the open pollination of a female parent of the variety Renown, itself a hybrid of M. integrifolia×M. tetraphylla. The seedling may have arisen from self-pollination or from cross-pollination with the nearest possible pollinators being of the varieties Own Choice, Keauhou, Kakea and N.R.G. Based on morphological comparison, the most likely pollen parent is Own Choice. The cultivar has been successfully and successively grafted onto a variety of rootstock yielding trees of consistent character and having good yield characteristics, while maintaining kernel quality and beneficial growth characteristics. The cultivar was discovered and propagated at Hidden Valley Plantations, Beerwah, Queensland, Australia.
The following is a detailed description of the new variety, with color terminology determined in accordance with The Royal Horticultural Society (R.H.S.) Colour Chart number. The characteristics and morphology listed below represents mean measurements from a minimum of one hundred specimens from trees grown in Beerwah, Queensland, Australia.
Tree: The tree is semi-erect in habit (more than Keauhou but less than Nutty Glen), moderately branched with a canopy of medium density (more dense than Hidden Valley A16 but less dense than Keauhou or Own Choice). The branches are more drooping than Keauhou. Leaves are found with both three and four leaves per node in a 1:1 ratio throughout the tree, unlike Keauhou and Kau which have predominantly three leaves per node and Renown which has predominantly four leaves per node. The grafted stock is strongly vigorous with shoots of medium thickness (thinner than Own Choice but thicker than Hidden Valley A16) with a mean of 42 mm between nodes, which sparse pubescence and weak anthocyanin coloration (R.H.S. color 152A) on new flushes. The tree has a relatively short juvenile phase (shorter than Keauhou or Kau) and a higher tolerance to Cercospora husk spot than observed for Own Choice.
Leaves: The leaves are narrow elliptical with a mean 3.69 times longer than wide, broader than Nutty Glen or Renown but narrower than Keauhou or Kau with an acutely pointed tip similar to Renown. The leaves are serrate with a mean 1.36 spines per cm which is characteristic and more than any known variety. Serrations are more shallow than Nutty Glen and spines are shorter than Renown. Leaves are only weakly undulated and weakly rolled compared with Keauhou. The young leaves are pale green (R.H.S. 137B) and mature leaves are dark green (R.H.S. 139A) and dull surfaced (similar to Nutty Glen) with distinctly lighter margins (R.H.S. 10A).
Mean leaf length.--144.54 mm with standard deviation (s.d.) of 22.6.
Mean leaf width.--39.23 mm with s.d. of 5.84.
Mean petiole length.--8.3 mm with s.d. of 1.48.
Flower: The racemes are cream colored, larger than Keauhou or Kau, and very dense on the tree. The tree has a shorter flowering period than Keauhou, which starts earlier and finishes later, but a longer flowering period than Hidden Valley A16. The tree has a tendency to have a second late flowering in seasons with favorable rainfall.
Fruit: The husk is of medium thickness (similar to Keauhou, thinner than Renown) with a medium hilum end point (smaller than Renown and larger than Kau) and a mildly shouldered pedicel (less than Own Choice). Husk dehiscence is partly on the tree (less than Nutty Glen and Renown) but mainly on the ground. There is an average of 1.7 nuts per raceme. There is no pre-germination on the tree observed (as in Nutty Glen) and very low incidence of fruit remaining on the tree or double embryo fruit as compared with Own Choice.
Mean fruit length.--50.05 mm with s.d. 2.82 (with pedicel and hilum).
Mean fruit width.--33.76 mm with s.d. 1.76.
Nut: The nuts are oval, 1.04 times longer than wider, less oval and more even than Renown but less round than Keauhou. The shell is light brown (R.H.S. 164A) with a smooth surface (smoother than Nutty Glen or Renown but more coarse than Kau) and a moderate sheen (more than Nutty Glen but less than Keauhou). The shell is thinner at the micropyle end (thinner than Kau but thicker than Nutty Glen). The suture is about the same color as the shell while the micropyle is barely visible. No twin mark is evident. There is moderate (less than Renown or Nutty Glen) pale flecking (R.H.S. 165C) in radial streaks from the micropyle end.
Mean nut diameter.--26.27 mm (Range 22-30 mm) with s.d. 1.38.
Mean nut weight.--7.5 gm.
Kernel: The kernel is ovoid, creamy white with very little upper/lower color difference and a mean weight of 3.5 gm. The kernel averages about 45% of the weight of the nut at 1.5% moisture content. All kernels have an oil accumulation about above 72% (100% first grade floaters recorded).
Yield: Recorded nut yields to date have been estimated to be higher per unit area than for Keauhou or Own Choice. This is based on recording yield per tree divided by tree silhouette area.
The following Table 1 compares many of these features of Hidden Valley A4 (HVA4) with the other varieties Hidden Valley A16 (HVA16), Keauhou, Kau, Own Choice, Nutty Glen, and Renown.
              TABLE 1                                                     
______________________________________                                    
Character  HV A4       Keauhou    Kau                                     
______________________________________                                    
TREE                                                                      
Growth     semi-       spreading  erect                                   
habit      erect                                                          
Canopy     medium      medium     high                                    
density    low                                                            
Lower      drooping    level      strongly                                
branch                            rising                                  
attitude                                                                  
Vigour,    v-strong    medium     med-weak                                
grafts                                                                    
Shoot      medium      medium     med-thin                                
thickness                                                                 
Anthocyanin                                                               
           weak        absent     absent                                  
colouration                                                               
           RHS 152A                                                       
Juvenile   v-short     medium     long                                    
phase                                                                     
LEAF                                                                      
No. per    3,4 (50%)   3          3                                       
axis                                                                      
Shape      Narrow      Obovate    Obovate                                 
           Ellipti-                                                       
           cal                                                            
Tip        acute       obtuse     obtuse                                  
           pointed     rounded    pointed                                 
Length/    3.69        3.25       3.42                                    
breadth                                                                   
length (mm)                                                               
           144.54      138.82     125.09                                  
Petiole    8.28        10.43      9.24                                    
length (mm)                                                               
Marg:      1.36        0.12       0.17                                    
Spines/cm                                                                 
Mid portion                                                               
           weak        med-strong med-weak                                
Undulation                                                                
Rolling    mid-weak    med-weak   med-weak                                
Mature     dark        dark       dark                                    
colour     green       green      green                                   
RHS Chart  139A        139A       139A                                    
No.                                                                       
Immature   green       green      green                                   
colour                                                                    
RHS Chart  137B        137A-B     141A                                    
No.                                                                       
Margin     paler       paler      similar                                 
colour                                                                    
Leaf sheen medium      med-high   med-high                                
Vein colour                                                               
           153 B       152D       152C                                    
           or C                                                           
FLOWERING AND FRUIT                                                       
Flowering  med-late    medium     v-early                                 
time                                                                      
Duration   short       medium     long                                    
Nuts/raceme                                                               
           1.7         1.5 (est)  2.5 (est)                               
Raceme     very        dense      medium                                  
density    dense                                                          
on tree                                                                   
Raceme     long        short      short-med                               
length                                                                    
Husk color 137A-B      137A       137B                                    
Husk thick-                                                               
           3.7 mm      3 mm       2.7 mm                                  
ness                                                                      
% nut      14.1%       11.7%      10.6%                                   
diameter                                                                  
Hilum      medium      medium     small                                   
endpoint                                                                  
Pedicel    weak        absent                                             
shoulder                                                                  
Dehiscence off-tree    off-tree 1 off-tree                                
(1-5)      1                      1                                       
Splitting  both 3      off-tree 5 off-tree                                
(1-5)                             5                                       
NUTS                                                                      
Nut Shape  oval        round      round                                   
length/    1.04        0.98       0.99                                    
breadth                                                                   
Nut        26.27       25.55      25.00                                   
diameter (mm)                                                             
Range (mm) 22-30       21-30      22-28                                   
Std        1.38        1.46       1.37                                    
deviation (mm)                                                            
Kernel     3.6-3.8     2.3-2.7    2.2-2.5                                 
weight (gm)                                                               
% of Nut   43-47       34-38      32-34                                   
Shell      smooth      mild-rough smooth                                  
texture                                                                   
Shell      medium      dull       dull                                    
sheen                                                                     
Shell      moderate    slight     moderate                                
flecking                                                                  
Micropyle  v-slight    obvious    v-slight                                
Shell      164A        165B       165B                                    
colour                                                                    
(dried)                                                                   
Suture     same        same       lighter                                 
colour                                                                    
______________________________________                                    
Character  Own Choice  Nutty Glen Renown                                  
______________________________________                                    
TREE                                                                      
Growth     spreading   semi-erect semi-                                   
habit                             erect                                   
Canopy     high        low        medium                                  
density                                                                   
Lower      drooping    rising     drooping                                
branch                                                                    
attitude                                                                  
Vigour,    strong                 strong                                  
grafts                                                                    
Shoot      thin        med-thin   medium                                  
thickness                                                                 
Anthocyanin                                                               
           weak                   medium                                  
colouration                       weak                                    
Juvenile   med-short                                                      
phase                                                                     
LEAF                                                                      
No. per    3           4          4                                       
axis                                                                      
Shape      Narrow      Narrow     Broad                                   
           Elliptical  Obovate    Lanceolate                              
Tip        obtuse      acute      acute                                   
           rounded     either     pointed                                 
Length/    2.81        4.53       3.91                                    
breadth                                                                   
length (mm)                                                               
           128.16      153.40     169.93                                  
Petiole    8.65        4.77       7.33                                    
length (mm)                                                               
Marg:      0.09        0.90       0.78                                    
Spines/cm                                                                 
Mid portion                                                               
           medium      weak       weak                                    
Undulation                                                                
Rolling    med strong  weak       med-weak                                
Mature     dark        dark       dark                                    
colour     green       green      green                                   
RHS Chart  139A                   137A                                    
No.                                                                       
Immature   green       green      green                                   
colour                                                                    
RHS Chart  137B                   143A                                    
No.                                                                       
Margin     paler       paler      paler                                   
colour                                                                    
Leaf sheen low         medium     low-med                                 
Vein colour                                                               
           152D                   153D                                    
FLOWERING AND FRUIT                                                       
Flowering  early       late       med-late                                
time                                                                      
Duration                                                                  
Nuts/raceme                                                               
           2.0 (est)              1.5 (est)                               
Raceme     dense                  med-                                    
density                           dense                                   
on tree                                                                   
Raceme     medium      long       long                                    
length                                                                    
Husk color 137A                   138A                                    
Husk thick-                                                               
           3.2 mm      4.3 mm     4.4 mm                                  
ness                                                                      
% nut      12.1%       15.4%      16.4%                                   
diameter                                                                  
Hilum      med-small   small      large                                   
endpoint                                                                  
Pedicel    absent      absent     weak                                    
shoulder                                                                  
Dehiscence both 2                 on-tree                                 
(1-5)                             3                                       
Splitting  off tree 4  on-tree 1  on-tree                                 
(1-5)                             2                                       
NUTS                                                                      
Nut Shape  round       round      oval                                    
length/    1.04        0.99       1.12                                    
breadth                                                                   
Nut        25.96       28.04      26.85                                   
diameter (mm)                                                             
Range (mm) 21-30       23-34      23-30                                   
Std        1.57        2.02       1.45                                    
deviation (mm)                                                            
Kernel     2.5-2.7     4.0        3.2-3.6                                 
weight (gm)                                                               
% of Nut   33-36       46-47      39-41                                   
Shell      smooth      rough      rough                                   
texture                                                                   
Shell      dull        med-shiny  shiny                                   
sheen                                                                     
Shell      mod-heavy   mod-slight mod-heavy                               
flecking                                                                  
Micropyle  v-slight    v-slight   v-slight                                
Shell      165A-B      165A-B     165B                                    
colour                                                                    
(dried)                                                                   
Suture     same        same       lighter                                 
colour                                                                    
______________________________________                                    

Claims (1)

We claim:
1. A new and distinct hybrid Macadamia integrifolia×tetraphylla named Hidden Valley A4 substantially as shown and described.
US07/344,279 1988-04-26 1989-04-26 Macadamia named "Hidden Valley A4" Expired - Lifetime USPP7490P (en)

Applications Claiming Priority (2)

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AU88/001 1988-04-26
AU8800188 1988-04-26

Publications (1)

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