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Breeding by Design for Functional Rice with Genome Editing Technologies
Published on: January 3, 2025
[Genetic analysis on aging-resistant in rice seed].
Shi-Yang Zhu1, Yuan Guo, De-Lin Hong
1State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China. zhushiyang2000@163.com
Yi Chuan = Hereditas
|February 5, 2008
Summary
Genetic analysis of rice (Oryza sativa L. japonica) germination traits revealed that two major genes and polygenes control germination percentage, rate, and index. Major genes predominantly influence these key agricultural traits.
Area of Science:
- Plant genetics
- Agricultural science
- Quantitative genetics
Context:
- Investigated a Recombinant Inbred Line (RIL) population derived from a japonica rice cross (Bing 8979/C Bao).
- Focused on three key germination traits: relative germination percentage, relative germination rate, and relative germination index.
- Utilized a population size of 350 lines for comprehensive genetic analysis.
Purpose:
- To elucidate the genetic architecture controlling germination traits in japonica rice.
- To determine the inheritance models governing relative germination percentage, rate, and index.
- To assess the relative contributions of major genes and polygenes to these traits.
Summary:
- Genetic analysis employed mixed major gene plus polygene inheritance models.
- Results indicate that two major genes and polygenes control the studied germination traits.
- Both major genes and polygenes exhibit additive-epistatic effects, with additive effects being more substantial.
Impact:
- Demonstrates that major genes have a larger heritability than polygenes for these traits.
- Highlights the primary governance of major genes over germination traits in this rice population.
- Provides insights for marker-assisted selection and breeding programs aimed at improving rice germination efficiency.
