Genetic variation in heat tolerance-related traits in a population of wheat multiple synthetic derivatives.

ABSTRACT: In wheat (Triticum aestivum L.) high temperature (≥30°C) during grain filling leads to considerable reduction in grain yield. We studied 400 multiple synthetic derivatives (MSD) lines to examine the genetic variability of heat stress-adaptive traits and to identify new sources of heat tolerance to be used in wheat breeding programs. The experiment was arranged in an augmented randomized complete block design in four environments in Sudan. A wide range of genetic variability was found in most of the traits in all environments. For all traits examined, we found MSD lines that showed better performance than their parent 'Norin 61' and two adapted Sudanese cultivars. Using the heat tolerance efficiency, we identified 13 highly heat-tolerant lines and several lines with intermediate heat

SUBMITTER: Elbashir AAE 

PROVIDER: S-EPMC5790045 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature