USPP5299P - Avocado tree--`Whitsell` - Google Patents
Avocado tree--`Whitsell` Download PDFInfo
- Publication number
- USPP5299P USPP5299P US06/467,627 US46762783V US5299P US PP5299 P USPP5299 P US PP5299P US 46762783 V US46762783 V US 46762783V US 5299 P US5299 P US 5299P
- Authority
- US
- United States
- Prior art keywords
- whitsell
- hass
- fruit
- avocado tree
- tree
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 235000008673 Persea americana Nutrition 0.000 title claims abstract description 7
- 240000002426 Persea americana var. drymifolia Species 0.000 title 1
- 244000025272 Persea americana Species 0.000 claims abstract description 6
- 235000013399 edible fruits Nutrition 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000005094 fruit set Effects 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 241000233614 Phytophthora Species 0.000 description 1
- 235000014443 Pyrus communis Nutrition 0.000 description 1
- 241000082085 Verticillium <Phyllachorales> Species 0.000 description 1
- 241000726445 Viroids Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000003898 horticulture Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- FDZZZRQASAIRJF-UHFFFAOYSA-M malachite green Chemical compound [Cl-].C1=CC(N(C)C)=CC=C1C(C=1C=CC=CC=1)=C1C=CC(=[N+](C)C)C=C1 FDZZZRQASAIRJF-UHFFFAOYSA-M 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
Images
Definitions
- This invention relates to a new and distinct variety of avocado tree designated as ⁇ Whitsell ⁇ and tested as selection 23/8/29.
- ⁇ Whitsell ⁇ is a seedling selection of the ⁇ Hass ⁇ cultivar and has been propagated asexually by T-budding, whip-grafting, saddle-grafting and saw-kerf grafting at the University of California, Riverside and South Coast Field Station facilities in Southern California where the variety has been tested.
- FIG. 1 shows typical fruiting characteristics of the tree.
- FIG. 2 shows the heavy fruit-set ability typical of the tree.
- ⁇ Whitsell ⁇ has three primary distinguishing characteristics. First, its tree is smaller than ⁇ Hass ⁇ which results in reduced picking costs and lessened tendency to suffer wind damage. Second, its production per acre is appreciably higher than ⁇ Hass ⁇ ; about twenty-five to forty percent from experience to date, based chiefly on several trees observed over several years at the testing areas. Third, the fruit size of ⁇ Whitsell ⁇ is a little larger than ⁇ Hass ⁇ which produces many fruits too small for the preferred commercial market in most years. Moreover, ⁇ Whitsell ⁇ is of "B" flowering type, making it a better pollinator for the major "A"-type commercial cultivars: ⁇ Hass ⁇ , ⁇ Pinkerton ⁇ , and ⁇ Reed ⁇ . Like ⁇ Hass ⁇ production of ⁇ Whitsell ⁇ alternates.
- ⁇ Whitsell ⁇ No resistance of ⁇ Whitsell ⁇ is known to the few insects which are rarely a problem to avocado trees, nor to Verticillium wilt, the Black-streak disease or the Sunblotch viroid. Resistance to Phytophthora is a property of the rootstock and not the scion top. In resistance to the physiological disease of freezing injury, ⁇ Whitsell ⁇ rates "tender" and is about comparable to the ⁇ Hass ⁇ standard.
- ⁇ Whitsell ⁇ as in the case of most avocado cultivars, does not have distinctive foliage and cannot consistently be distinguished from ⁇ Hass ⁇ on the basis of leaf, flower, or limb traits.
- ⁇ Whitsell ⁇ In tree form ⁇ Whitsell ⁇ is erratic and irregular in branch outline and fairly distinctive among avocados. It is semi-dwarf, very dense with moderate vigor. Leaves are smaller and deeper green than ⁇ Hass ⁇ .
- Hass ⁇ About 300 grams per average. Dark green, rough skin, thicker than ⁇ Hass ⁇ but pliable. Fine russet speckle on blossom end, becoming more pronounced and general as the fruit matures. Season is about April through September. Flesh less rich yellow than ⁇ Hass ⁇ . Flavor less nutty than ⁇ Hass ⁇ , "very good”. Seed even smaller than ⁇ Hass ⁇ . Very heavy production in alternate years.
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- Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
Abstract
A new and distinct variety of avocado tree characterized by its smallness in size, high productivity, larger fruit than `Hass` and handsome fruit color.
Description
This invention relates to a new and distinct variety of avocado tree designated as `Whitsell` and tested as selection 23/8/29.
`Whitsell` is a seedling selection of the `Hass` cultivar and has been propagated asexually by T-budding, whip-grafting, saddle-grafting and saw-kerf grafting at the University of California, Riverside and South Coast Field Station facilities in Southern California where the variety has been tested.
In the drawing:
FIG. 1 shows typical fruiting characteristics of the tree.
FIG. 2 shows the heavy fruit-set ability typical of the tree.
`Whitsell` has three primary distinguishing characteristics. First, its tree is smaller than `Hass` which results in reduced picking costs and lessened tendency to suffer wind damage. Second, its production per acre is appreciably higher than `Hass`; about twenty-five to forty percent from experience to date, based chiefly on several trees observed over several years at the testing areas. Third, the fruit size of `Whitsell` is a little larger than `Hass` which produces many fruits too small for the preferred commercial market in most years. Moreover, `Whitsell` is of "B" flowering type, making it a better pollinator for the major "A"-type commercial cultivars: `Hass`, `Pinkerton`, and `Reed`. Like `Hass` production of `Whitsell` alternates.
Probably the chief disadvantage of `Whitsell` is its development of more obvious russeting or corking of the skin, especially late in its season. However, the fruit is a handsome deep green and more attractive than such commercial cultivars as `Pinkerton`.
No resistance of `Whitsell` is known to the few insects which are rarely a problem to avocado trees, nor to Verticillium wilt, the Black-streak disease or the Sunblotch viroid. Resistance to Phytophthora is a property of the rootstock and not the scion top. In resistance to the physiological disease of freezing injury, `Whitsell` rates "tender" and is about comparable to the `Hass` standard.
It is impossible to assign very meaningful distinctions of the new variety based upon color. With reference to the Horticulture Colour Charts (issued by Wilson Colour Ltd. in collaboration with The Royal Horticultural Society) typical fruit of `Whitsell` has the background skin color designated as Parsley Green, oo962 (Repertoire, Vert barbedienne 287/1). The basic green skin color not only varies of itself, but is flecked with numerous tiny islands of varying yellowish shades. Moreover, the two halves of the fruit usually differ in average color. Each average color differs according to the time of fruit-set (which may vary widely on a tree), the degree of maturity, geographic location, and possibly other factors. Nevertheless, the basic background skin color above-identified is the most consistent color feature of the fruit of this variety.
`Whitsell`, as in the case of most avocado cultivars, does not have distinctive foliage and cannot consistently be distinguished from `Hass` on the basis of leaf, flower, or limb traits. In tree form `Whitsell` is erratic and irregular in branch outline and fairly distinctive among avocados. It is semi-dwarf, very dense with moderate vigor. Leaves are smaller and deeper green than `Hass`.
Ovate to pear, shorter and thicker than 1 Hass`. About 300 grams per average. Dark green, rough skin, thicker than `Hass` but pliable. Fine russet speckle on blossom end, becoming more pronounced and general as the fruit matures. Season is about April through September. Flesh less rich yellow than `Hass`. Flavor less nutty than `Hass`, "very good". Seed even smaller than `Hass`. Very heavy production in alternate years.
Claims (1)
1. The new and distinct variety of avocado tree herein described and illustrated and identified by the characteristics enumerated above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/467,627 USPP5299P (en) | 1983-02-18 | 1983-02-18 | Avocado tree--`Whitsell` |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/467,627 USPP5299P (en) | 1983-02-18 | 1983-02-18 | Avocado tree--`Whitsell` |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| USPP5299P true USPP5299P (en) | 1984-10-23 |
Family
ID=23856453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US06/467,627 Expired - Lifetime USPP5299P (en) | 1983-02-18 | 1983-02-18 | Avocado tree--`Whitsell` |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | USPP5299P (en) |
-
1983
- 1983-02-18 US US06/467,627 patent/USPP5299P/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AS | Assignment |
Owner name: REGENTS OF THE UNIVERSITY OF CALIFORNIA THE, 2200 Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WHITSELL, ROBERT H.;REEL/FRAME:004096/0818 Effective date: 19830117 |