Lavish Lacey Interspecific Tree Breeding for Maturity and Chilling Balance
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Solution Overview
Problem
Existing interspecific tree varieties face challenges in maturity timing, chilling requirements, and fruit characteristics, such as 'Dapple Supreme' having earlier maturity and higher chilling needs, while 'Bella Jewel' has lighter flesh color, lacking a balanced fruit quality and storage ability.
Innovation Solution
The development of the 'Lavish Lacey' interspecific tree, resulting from a cross between '76ZP444' and '70ZT434', exhibits later maturity, reduced chilling requirement, and darker red flesh, with improved fruit quality, storage, and shipping capabilities through asexual reproduction on 'Nemaguard' rootstock.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If earlier maturity varieties like 'Dapple Supreme' are used, then earlier fruit availability is achieved, but chilling requirements increase
Solution Approach 1:
The patent applies parameter changes by developing a new variety through controlled breeding that alters the chilling requirement parameter from 600+ hours in parent varieties to approximately 400 hours in 'Lavish Lacey', while simultaneously adjusting maturity timing to occur after June 1st, creating an optimal balance between these two parameters
2Stability of the object's composition
If parent variety characteristics are maintained, then genetic stability is preserved, but fruit quality and storage ability are insufficient
Solution Approach 1:
The patent merges desirable traits from two different parent varieties through controlled cross-breeding: from variety A it inherits vigorous growth and regular bearing habits, while from variety B it inherits fruit quality characteristics. The resulting 'Lavish Lacey' variety combines these inherited traits with improved storage ability and enhanced fruit quality that neither parent possessed individually, achieving reliable fruit quality while maintaining genetic stability through true-to-type asexual reproduction
3Stability of the object's composition
If asexual reproduction is used, then genetic consistency is maintained, but adaptation to different conditions is reduced
Solution Approach 1:
The patent uses rootstock as an intermediary to resolve the contradiction between genetic consistency and adaptability. By grafting the genetically consistent 'Lavish Lacey' scion onto adaptable rootstocks, the system maintains the genetic integrity of the fruit-bearing portion while the rootstock provides adaptability to different soil conditions, climates, and disease pressures, allowing the tree to thrive in various environments without altering the fruit's genetic characteristics
Data Source
AI summary
A new and distinct variety of interspecific tree. The following features of the tree and its fruit are characterized with the tree budded on ‘Nemaguard’ Rootstock (non-patented), grown on Handford sandy loam soil with Storie Index rating 95, in USDA Hardiness Zone 9, near Modesto, Calif., with standard commercial fruit growing practices, such as pruning, thinning, spraying, irrigation and fertilization. Its novelty consist of the following combination of desirable features:1. Tree having a vigorous, upright growth habit.2. Tree being a regular and productive bearer of medium size, red flesh fruit.3. Fruit with very good flavor and eating quality.4. Fruit with a high degree of attractive red skin color.5. Fruit with good storage and shipping ability.