Abscisic acid synergizes with sucrose to enhance grain yield and quality of rice by improving the source-sink relationship.

ABSTRACT: BACKGROUND:Abscisic acid (ABA) and sucrose act as molecular signals in response to abiotic stress. However, how their synergy regulates the source-sink relationship has rarely been studied. This study aimed to reveal the mechanism underlying the synergy between ABA and sucrose on assimilates allocation to improve grain yield and quality of rice. The early indica rice cultivar Zhefu802 was selected and planted in an artificial climate chamber at 32/24 °C (day/night) under natural sunlight conditions. Sucrose and ABA were exogenously sprayed (either alone or in combination) onto rice plants at flowering and 10 days after flowering. RESULTS:ABA plus sucrose significantly improved both the grain yield and quality of rice, which was mainly a result of the higher proportion of dry matter accumul

SUBMITTER: Chen T 

PROVIDER: S-EPMC6882056 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature