Growth Regulators Improve Outcrossing Rate of Diverse Rice Cytoplasmic Male Sterile Lines through Affecting Floral Traits.

ABSTRACT: Cytoplasmic male sterility (CMS) provides an irreplaceable strategy for commercial exploitation of heterosis and producing high-yielding hybrid rice. The exogenous application of plant growth regulators could improve outcrossing rates of the CMS lines by affecting floral traits and accordingly increase hybrid rice seed production. The present study aimed at exploring the impact of growth regulators such as gibberellic acid (GA₃), indole-3-acetic acid (IAA), and naphthalene acetic acid (NAA) on promoting floral traits and outcrossing rates in diverse rice CMS lines and improving hybrid rice seed production. The impact of foliar applications of growth regulators comprising GA₃ at 300 g/ha or GA₃ at 150 g/ha + IAA at 50 g/ha + NAA at 200 g/ha versus untreated

SUBMITTER: ElShamey EAZ 

PROVIDER: S-EPMC9148114 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature