The Response of Grain Yield and Root Morphological and Physiological Traits to Nitrogen Levels in Paddy Rice.

ABSTRACT: Rice (Oryza sativa L.) is an important crop in China. Although it is known that its yield is restricted by nitrogen (N) supply, the response of the root system to N supply specifically has not been systematically explored. This study aimed to investigate the effect of N uptake on grain yield to clarify the relationships between root morphophysiological traits and N uptake, and to understand relation between phytohormones and root morphophysiological traits. Two N-efficient absorption cultivars (NEAs) and two N-inefficient absorption cultivars (NIAs) were grown in the field, and three N conditions, deficient N (60 kg ha^-1), intermediate N (180 kg ha^-1), and sufficient N (240 kg ha^-1), were applied during the growing season. The results showed higher d

SUBMITTER: Xin W 

PROVIDER: S-EPMC8439581 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature