USPP7521P - Macadamia named "Hidden Valley A16" - Google Patents

Macadamia named "Hidden Valley A16" Download PDF

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USPP7521P
USPP7521P US07/344,278 US34427889V US7521P US PP7521 P USPP7521 P US PP7521P US 34427889 V US34427889 V US 34427889V US 7521 P US7521 P US 7521P
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tree
nut
medium
med
keauhou
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US07/344,278
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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.
  • a low density canopy a very short flowering period
  • an elliptical leaf which has a smooth, lightly undulated and rolled margin
  • medium pale racemes a set of an average of 4.4 nuts per raceme and a nut which is smooth, oval and thin shelled.
  • FIG. 1 shows a typical tree specimen of the new variety, named "Hidden Valley A16".
  • FIG. 2 shows typical nut clusters of the new variety.
  • FIG. 3 shows a comparison of the leaves of the new variety with 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 pollination parents being of the varieties Own Choice, Keauhou, Kakea and N.R.G.
  • the male parent is believed unlikely to have been self and based on an examination of the morphological character of the plant it is believed that the most likely pollen parent is an integrifolia variety such as Kakea or Keauhou.
  • 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 current kernel quality and beneficial growth characteristics. The cultivar was discovered and propagated at Hidden Valley Plantations, Beerwah, Queensland, Australia.
  • Tree The tree is erect in habit (slightly more than Kau), moderately branching with a low density canopy (less than Keauhou or Own Choice). The leaves are arranged predominantly three leaves per node unlike Renown which has predominantly four leaves per node and Hidden Valley A4 which has an even ratio between three- and four-leaf nodes.
  • the grafted material is vigorous in growth (more than Keauhou but less than Hidden Valley A4).
  • the shoots are of medium thickness (thinner than Hidden Valley A4) with an average of 44 mm between nodes, with sparse pubescence and weak anthocyanin coloration (R.H.S. 153A) on the new flush.
  • the tree exhibits an average length juvenile phase (slightly shorter than Keauhou or Kau but longer than Hidden Valley A4).
  • Leaves The leaves are elliptical, 2.65 times longer than broad, broader than Own Choice or Keauhou with an obtuse angle rounded tip similar to Kau.
  • the leaf margins are smooth with 0.01 spines per cm and are less undulated than Keauhou.
  • the leaf margins are rolled similar to Own Choice.
  • the young leaves are pale green (R.H.S. 137B), while mature leaves are dark green (R.H.S. 137A), dull surfaced similar to Nutty Glen with distinctly lighter margins (R.H.S. 15D).
  • the racemes are white, medium in length (shorter than Renown) and sparse on the tree compared to Keauhou.
  • the tree has a shorter and lighter flowering period than Keauhou, which starts earlier and finishes later.
  • the flowering observed is mid-season and the length of flowering time is shorter than for any other known variety.
  • the reduced length of flowering time is believed to contribute to an observed light post-anthesis nut drop.
  • the husk is relatively thin (thinner than Renown and similar to Keauhou) with a small hilum end point (about the same as Kau) and an unshouldered pedicel also similar to Kau. Husk dehiscence is partly on the tree (although less so than Nutty Glen or Renown) but is mainly on the ground. There is an average of 4.4 nuts per raceme. There is no pre-germination on the tree observed (as in Nutty Glen) and a 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 (less than Nutty Glen but more than Keauhou).
  • the shell is thinner at the micropyle end (thinner than Keauhou or Kau, but slightly thicker than Nutty Glen).
  • the suture is darker than the shell (R.H.S. 165A), while the micropyle is barely visible. There is no twin mark evident.
  • There is moderate pale flecking (R.H.S. 164C) more than Keauhou but less than Renown or Nutty Glen.
  • Kernel The kernel is ovoid, creamy white with very little upper/lower color difference and a mean weight of 2.9 gm. The kernel averages about 45% of the weight of the nut at 1.5% moisture content. 99% of the kernels have an oil accumulation above 72%.
  • HV A16 Hidden Valley A16

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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 the following combination of characteristics: a low density canopy, a very short flowering period, an elliptical leaf with smooth, lightly undulated and rolled margins, medium pale racemes setting an average of 4.4 nuts per raceme and a nut which is smooth, oval and thin shelled.

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 characterstics of this tree is a combination of: a low density canopy, a very short flowering period, an elliptical leaf which has a smooth, lightly undulated and rolled margin, medium pale racemes, a set of an average of 4.4 nuts per raceme and a nut which is smooth, oval and thin shelled.
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 has exhibited 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 A16".
FIG. 2 shows typical nut clusters of the new variety.
FIG. 3 shows a comparison of the leaves of the new variety with 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 pollination parents being of the varieties Own Choice, Keauhou, Kakea and N.R.G. The male parent is believed unlikely to have been self and based on an examination of the morphological character of the plant it is believed that the most likely pollen parent is an integrifolia variety such as Kakea or Keauhou. 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 current 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 represent mean measurements from a minimum of one hundred specimens from trees grown in Beerwah, Queensland, Australia.
Tree: The tree is erect in habit (slightly more than Kau), moderately branching with a low density canopy (less than Keauhou or Own Choice). The leaves are arranged predominantly three leaves per node unlike Renown which has predominantly four leaves per node and Hidden Valley A4 which has an even ratio between three- and four-leaf nodes. The grafted material is vigorous in growth (more than Keauhou but less than Hidden Valley A4). The shoots are of medium thickness (thinner than Hidden Valley A4) with an average of 44 mm between nodes, with sparse pubescence and weak anthocyanin coloration (R.H.S. 153A) on the new flush. The tree exhibits an average length juvenile phase (slightly shorter than Keauhou or Kau but longer than Hidden Valley A4).
Leaves: The leaves are elliptical, 2.65 times longer than broad, broader than Own Choice or Keauhou with an obtuse angle rounded tip similar to Kau. The leaf margins are smooth with 0.01 spines per cm and are less undulated than Keauhou. The leaf margins are rolled similar to Own Choice. The young leaves are pale green (R.H.S. 137B), while mature leaves are dark green (R.H.S. 137A), dull surfaced similar to Nutty Glen with distinctly lighter margins (R.H.S. 15D).
Mean leaf length.--126.59 mm with standard deviation (s.d.) of 15.29.
Mean leaf width.--48.24 mm with s.d. of 5.46.
Mean petiole length.--6.8 mm with s.d. of 1.48.
Flower: The racemes are white, medium in length (shorter than Renown) and sparse on the tree compared to Keauhou. The tree has a shorter and lighter flowering period than Keauhou, which starts earlier and finishes later. The flowering observed is mid-season and the length of flowering time is shorter than for any other known variety. The reduced length of flowering time is believed to contribute to an observed light post-anthesis nut drop.
Fruit: The husk is relatively thin (thinner than Renown and similar to Keauhou) with a small hilum end point (about the same as Kau) and an unshouldered pedicel also similar to Kau. Husk dehiscence is partly on the tree (although less so than Nutty Glen or Renown) but is mainly on the ground. There is an average of 4.4 nuts per raceme. There is no pre-germination on the tree observed (as in Nutty Glen) and a very low incidence of fruit remaining on the tree or double-embryo fruit as compared with Own Choice.
Mean fruit length.--40.7 mm with s.d. 2.47 (with pedicel and hilum).
Mean fruit width.--30.95 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 (less than Nutty Glen but more than Keauhou). The shell is thinner at the micropyle end (thinner than Keauhou or Kau, but slightly thicker than Nutty Glen). The suture is darker than the shell (R.H.S. 165A), while the micropyle is barely visible. There is no twin mark evident. There is moderate pale flecking (R.H.S. 164C), more than Keauhou but less than Renown or Nutty Glen.
Mean nut diameter.--24.97 (Range 19-28 mm) with s.d. 1.27.
Mean nut weight.--6.5 gm.
Kernel: The kernel is ovoid, creamy white with very little upper/lower color difference and a mean weight of 2.9 gm. The kernel averages about 45% of the weight of the nut at 1.5% moisture content. 99% of the kernels have an oil accumulation above 72%.
Yield: Recorded nut yields to date have been estimated in trials to be the highest of all tested varieties based on the yield of the original tree. The estimate is based on recording yield per tree divided by tree silhouette area. The original tree's yield estimate is boosted by its relatively small size for its age. The nut yield has grown proportionately faster than the tree. Other trees of the variety are too young, as yet, to assist whether this growth characteristic is characteristic of the variety or simply of the original tree.
The following Table 1 compares many of the features of Hidden Valley A16 (HV A16) with the other varieties Keauhou, Kau, Own Choice, Nutty Glen, and Renown.
______________________________________                                    
Tree                                                                      
______________________________________                                    
Character   HV A16     Keauhou    Kau                                     
______________________________________                                    
Growth      erect      spreading  erect                                   
habit                                                                     
Canopy      low        medium     high                                    
density                                                                   
Lower       rising     level      strongly                                
branch                            rising                                  
attitude                                                                  
Vigour,     strong     medium     med-weak                                
grafts                                                                    
Shoot       med-thin   medium     med-thin                                
thickness                                                                 
Anthocyanin weak       absent     absent                                  
colouration RHS                                                           
            152A-B                                                        
Juvenile    short      medium     long                                    
phase                                                                     
______________________________________                                    
            Own        Nutty                                              
Character   Choice     Glen       Renown                                  
______________________________________                                    
Growth      spread-    semi-      semi-                                   
habit       ing        erect      erect                                   
Canopy      high       low        medium                                  
density                                                                   
Lower       droop-     rising     droop-                                  
branch      ing                   ing                                     
attitude                                                                  
Vigour,     strong                strong                                  
grafts                                                                    
Shoot       thin       med-       medium                                  
thickness              thin                                               
Anthocyanin weak                  medium                                  
colouration                       weak                                    
Juvenile    med-                                                          
phase       short                                                         
______________________________________                                    
______________________________________                                    
LEAF                                                                      
______________________________________                                    
Character   HV A16    Keauhou    Kau                                      
No. per axis                                                              
            3         3          3                                        
______________________________________                                    
Shape       Ellipti-  Obovate    Obovate                                  
            cal                                                           
Tip         obtuse    obtuse     obtuse                                   
            rounded   rounded    pointed                                  
Length/     2.64      3.25       3.42                                     
breadth                                                                   
length(mm)  126.59    138.82     125.09                                   
Petiole     6.78      10.43      9.24                                     
length(mm)                                                                
Marg:Spines 0.12      0.12       0.17                                     
/cm                                                                       
Mid portion medium    med-strong med-weak                                 
Undulation                                                                
Rolling     medium    med-weak   med-weak                                 
Mature      dark      dark       dark                                     
colour      green     green      green                                    
RHS Chart   137A      139A       139A                                     
No.                                                                       
Immature    green     green      green                                    
colour                                                                    
RHS Chart   137B      137A-B     141A                                     
No.                                                                       
Margin      paler     paler      similar                                  
colour                                                                    
Leaf sheen  low       med-high   med-high                                 
Vein colour 153A      152D       152C                                     
______________________________________                                    
Character   Own Choice  Nutty Glen Renown                                 
No. per axis                                                              
            3           4          4                                      
______________________________________                                    
Shape       Narrow      Narrow     Broad                                  
            Elliptical  Obovate    Lanceolate                             
Tip         obtuse      acute      acute                                  
            rounded     either     pointed                                
Length/     2.81        4.53       3.91                                   
breadth                                                                   
lenght(mm)  128.16      153.40     169.93                                 
Petiole     8.65        4.77       7.33                                   
length(mm)                                                                
Marg:Spines 0.09        0.90       0.78                                   
/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                                                       
______________________________________                                    
Character   HV A16    Keauhou    Kau                                      
______________________________________                                    
Flowering   med-late  medium     v-early                                  
time                                                                      
Duration    very      medium     long                                     
            short                                                         
Nuts/raceme 4.4       1.5(est)   2.5(est)                                 
Raceme      very      dense      medium                                   
density     light                                                         
on tree                                                                   
Raceme      medium    short      short-med                                
length                                                                    
Husk color  137A      137A       137B                                     
Husk thick- 3 mm      3 mm       2.7 mm                                   
ness                                                                      
% nut       12%       11.7%      10.6%                                    
diameter                                                                  
Hilum       medium-   medium     small                                    
endpoint    small                                                         
Pedicel     absent    absent                                              
shoulder                                                                  
Dehiscence  off-tree  off-tree 1 off-tree                                 
(1-5)       1                    1                                        
Splitting   off-tree  off-tree 5 off-tree                                 
(1-5)       4                    5                                        
______________________________________                                    
Character   Own Choice  Nutty Glen Renown                                 
______________________________________                                    
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                                                                      
______________________________________                                    
Character    HV A16     Keauhou    Kau                                    
______________________________________                                    
Nut Shape    oval       round      round                                  
length/      1.04       0.98       0.99                                   
breadth                                                                   
Nut          24.97      25.55      25.00                                  
diameter(mm)                                                              
Range(mm)    19-28      21-30      22-28                                  
Std          1.27       1.46       1.37                                   
deviation(mm)                                                             
Kernel       2.9-3.5    2.3-2.7    2.2-2.5                                
weight(mm)                                                                
% of Nut     44-47      34-38      32-34                                  
Shell        smooth     mild-rough smooth                                 
texture                                                                   
Shell        medium     dull       dull                                   
sheen                                                                     
Shell        mod-slight slight     moderate                               
flecking                                                                  
Micropyle    v-slight   obvious    v-slight                               
Shell        164A       165B       165B                                   
colour                                                                    
(dried)                                                                   
Suture       darker     same       lighter                                
colour                                                                    
______________________________________                                    
Character   Own Choice  Nutty Glen Renown                                 
______________________________________                                    
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(mm)                                                                
% 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 A16 substantially as shown and described.
US07/344,278 1988-04-26 1989-04-26 Macadamia named "Hidden Valley A16" Expired - Lifetime USPP7521P (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU8800288 1988-04-26
AU88/002 1988-04-26

Publications (1)

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USPP7521P true USPP7521P (en) 1991-05-14

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