Stigma Functionality and Fertility Are Reduced by Heat and Drought Co-stress in Wheat.

ABSTRACT: As a consequence of climate change, unpredictable extremely hot and dry periods are becoming more frequent during the early stages of reproductive development in wheat (Triticum aestivum L.). Pollen sterility has long been known as a major determinant of fertility loss under high temperature and water scarcity, but it will be demonstrated here that this is not the exclusive cause and that damage to female reproductive organs also contributes to losses of fertility and production. Changes in the phenology, morphology, and anatomy of female reproductive cells and organs, in the ROS and RNS generation of stigmatic papilla cells, and in fertility and yield components in response to simultaneous high temperature and drought at gametogenesis were studied in two wheat genotypes with contra

SUBMITTER: Fabian A 

PROVIDER: S-EPMC6417369 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature