The Rapid Cytological Process of Grain Determines Early Maturity in Weedy Rice.

ABSTRACT: Shorter grain-filling period and rapid endosperm development endow weedy rice (WR) with early maturity compared to cultivated rice (CR). However, the role of the cytological features and antioxidative enzyme system during grain development are largely unexplored. We selected four biotypes of WR and their associated cultivated rice (ACR) types from different latitudes to conduct a common garden experiment. The difference in the cytological features of endosperm between WR and ACR was compared by chemical staining, and the cell viability and nuclear morphometry of endosperm cells were observed by optical microscopy. Furthermore, antioxidative enzyme activity was measured during grain filling. Anatomic observation of endosperm shows that the development process of endosperm cell in WR was mor

SUBMITTER: Zhao C 

PROVIDER: S-EPMC8438156 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature