Interspecific Prunus Tree Breeding for Fruit Quality and Yield
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Solution Overview
Problem
Existing plum and interspecific tree varieties lack desirable traits such as larger fruit size, improved eating quality, and reduced acidity, as well as consistent and earlier maturity, which are essential for commercial success in orchard production.
Innovation Solution
The development of a new interspecific tree variety derived from crosses between Prunus salicina and Prunus armeniaca, utilizing a seed parent '276LF278' and 'Crimson Heart' Interspecific, exhibiting vigorous growth, regular bearing, and medium-sized yellow flesh fruit with enhanced flavor and storage qualities, budded onto 'Nemaguard' Rootstock for asexual reproduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If existing plum and intersspecific tree varieties are used, then cultivation is established, but fruit size remains small, eating quality is poor, and acidity is high
Solution Approach 1:
The patent applies parameter changes by creating a new variety through controlled cross-breeding between Prunus salicina and Prunus armeniaca, fundamentally altering the genetic parameters to achieve larger fruit size (40-60mm diameter), reduced acidity, and improved eating quality while maintaining commercial cultivar characteristics
2Productivity
If existing varieties are cultivated, then production is established, but maturity time is inconsistent and later
Solution Approach 1:
The patent implements preliminary action by conducting extensive preliminary breeding work over multiple years to develop the new variety with predetermined maturity characteristics, achieving consistent early-to-mid season maturity (July-August in California) that is reliably transmitted through asexual propagation
3Manufacturing precision
If new variety is developed through cross-breeding, then fruit quality and size are improved, but breeding complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the breeding program into distinct phases: selecting specific parent varieties with complementary traits, controlled cross-pollination, evaluation of progeny for desired characteristics, and asexual propagation of superior selections, thereby managing complexity through systematic segmentation of the breeding process
4Reliability
If fruit holds firm on tree for extended period, then shipping quality is improved, but risk of damage or disease may increase
Solution Approach 1:
The patent applies this principle by developing fruit with firm flesh that maintains integrity during handling and shipping, allowing the fruit to effectively 'dispose' of its susceptibility period by holding firm for the necessary shipping duration (10+ days) without developing disease or damage, thereby ensuring marketability
Data Source
AI summary
A new and distinct variety of interspecific Prunus 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. Vigorous, upright tree growth.2. Fruit with very good flavor and eating quality.3. Fruit with an attractive dark red skin color.4. Heavy and regular bearer of fruit.5. Fruit with good handling and shipping quality.