Earliness per se×temperature interaction: consequences on leaf, spikelet, and floret development in wheat.

ABSTRACT: Wheat adaptation can be fine-tuned by earliness per se (Eps) genes. Although the effects of Eps genes are often assumed to act independently of the environment, previous studies have shown that they exhibit temperature sensitivity. The number of leaves and phyllochron are considered determinants of flowering time and the numerical components of yield include spikelets per spike and fertile floret number within spikelets. We studied the dynamics of leaf, spikelet, and floret development in near isogenic lines with either late or early alleles of Eps-D1 under seven temperature regimes. Leaf appearance dynamics were modulated by temperature, and Eps alleles had a greater effect on the period from flag leaf to heading than phyllochron. In addition, the effects of the Eps alleles on spikelets p

SUBMITTER: Prieto P 

PROVIDER: S-EPMC7242086 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature