A Natural Major Module Confers the Trade-Off between Phenotypic Mean and Plasticity of Grain Chalkiness in Rice.

ABSTRACT: A critical challenge in crop breeding is the trade-off between improving the mean of an important trait and maintaining its phenotypic plasticity. Grain chalkiness is a key cereal grain-quality trait highly susceptible to environments. However, the genetic and molecular mechanisms controlling the trade-off between phenotypic mean and plasticity of grain chalkiness remain unknown. Here, utilizing comprehensive genome-wide association studies on ten grain chalkiness traits over five years in a mini-core collection, substantial phenotypic plasticity of grain chanlkiness is found, which declines during modern breeding. A general trade-off between phenotypic mean and plasticity of grain chalkiness is demonstrated, which are controlled by distinct genetic architectures revealed through a detaile

SUBMITTER: Zhang J 

PROVIDER: S-EPMC12622540 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature