Increased Photosynthetic Capacity and Energy Status Contribute to Higher Grain Yield in Early Rice.

ABSTRACT: As the economy develops and urbanization progresses, the amount of arable land continues to decline. In this context, the cultivation of double-season rice is particularly important for enhancing yield per unit area. However, research on the physiological mechanisms that contribute to high yields in double-season early rice varieties with short growing seasons is still limited. To address this gap, we conducted a field study using two early rice varieties, Zhongzu18 and Yongxian15, to examine their production characteristics, photosynthesis, fluorescence, and energy metabolism. The results indicate that Zhongzu18 has a significantly higher seed-setting rate, grain weight, and total grain yield compared to Yongxian15. Additionally, Zhongzu18 exhibits a higher head rice rate and a lower degr

SUBMITTER: Su H 

PROVIDER: S-EPMC11855855 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature