Dynamics of floret initiation/death determining spike fertility in wheat as affected by Ppd genes under field conditions.

ABSTRACT: As wheat yield is linearly related to grain number, understanding the physiological determinants of the number of fertile florets based on floret development dynamics due to the role of the particular genes is relevant. The effects of photoperiod genes on dynamics of floret development are largely ignored. Field experiments were carried out to (i) characterize the dynamics of floret primordia initiation and degeneration and (ii) to determine which are the most critical traits of such dynamics in establishing genotypic differences in the number of fertile florets at anthesis in near isogenic lines (NILs) carrying photoperiod-insensitive alleles. Results varied in magnitude between the two growing seasons, but in general introgression of Ppd-1a alleles reduced the number of fertile florets.

SUBMITTER: Prieto P 

PROVIDER: S-EPMC5920323 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature