Melon Variety NUN 71504 MEM Genetic Uniformity
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Solution Overview
Problem
Current melon breeding techniques face challenges in developing uniform varieties with desirable traits such as high yield, disease resistance, and optimal climatic adaptability, as they often result in unpredictable performance due to genetic non-uniformity in hybrid plants.
Innovation Solution
The development of the melon variety NUN 71504 MEM, which is a homogeneous population of seeds producing plants with specific morphological and physiological characteristics, including resistance to Fusarium oxysporum f.sp. melonis and intermediate resistance to powdery mildew, and is propagated through methods like tissue culture and vegetative reproduction to maintain genetic stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional breeding techniques are used to develop melon varieties, then genetic diversity and adaptability are improved, but uniformity and predictability of hybrid performance deteriorate
Solution Approach 1:
The breeding program segments the development process into distinct phases: creating homozygous inbred lines through repeated selfing, then crossing specific lines to produce uniform F1 hybrids. This segmentation allows genetic diversity to be captured in the inbred lines while ensuring uniformity in the final hybrid variety.
Solution Approach 2:
The patent changes the genetic parameter state by transitioning from heterozygous segregating populations to homozygous inbred lines through repeated selfing over multiple generations. This parameter change (from heterozygosity to homozygosity) enables uniform F1 hybrid production while maintaining adaptability through diverse parental line selection.
2Stability of the object's composition
If inbred plants are developed through self-pollination and selection, then uniformity of the variety is improved, but genetic diversity and adaptability deteriorate
Solution Approach 1:
The patent applies preliminary action by developing multiple homozygous inbred lines with diverse genetic backgrounds before creating the final hybrid variety. This preliminary diversification ensures that when F1 hybrids are produced, they inherit adaptability from diverse parents while maintaining uniformity through controlled crossing.
Solution Approach 2:
The final hybrid variety is created as a composite of multiple inbred lines, combining their diverse genetic traits. The F1 hybrid represents a composite genetic structure that achieves both uniformity (through controlled cross between specific inbreds) and adaptability (through diverse parental contributions).
3Adaptability or versatility
If cross-pollination between different genotypes is used, then genetic diversity is improved, but uniformity of the hybrid population deteriorates
Solution Approach 1:
The patent applies local quality by ensuring that each parental inbred line is homozygous and genetically uniform before crossing. This local uniformity in the parents ensures that the F1 hybrid population achieves uniformity despite the genetic variation introduced by cross-pollination between diverse parental lines.
4Adaptability or versatility
If breeding pools are created from multiple plants, then genetic diversity is improved, but complexity of the breeding process increases
Solution Approach 1:
The breeding process is segmented into distinct phases: creating inbred lines through selfing, evaluating them for desired traits, and then crossing selected lines. This segmentation manages complexity by breaking down the breeding process into manageable steps rather than attempting to manage diverse breeding pools all at once.
Solution Approach 2:
The patent changes the genetic parameter from heterozygous segregating populations to homozygous inbred lines through repeated selfing. This parameter change simplifies the breeding process by creating stable, uniform parental lines that are easier to evaluate and cross compared to managing complex segregating populations.
Data Source
AI summary
The invention provides a new and distinct hybrid variety of melon, NUN 71504 MEM.