Grain yield and quality performances of different late-season rice cultivars in response to experimental warming in subtropical China

• DOI: 10.3389/fpls.2023.1136564
• Publication Date: 2023-05-15T14:57:43Z
• Authors: Taotao Yang; Xueming Tan; Shan Huang; Xiaohua Pan; Yongjun Zeng; Jun Zhang; Shanmei Cheng; Yanhua Zeng
• Keywords: Growing season; Brown rice

Climate warming has pronounced effects on rice production in China. However, late-seasons cultivars are diverse double cropping systems, and the actual responses grain yield quality of different late-season to climate still unclear.A two-year field experiment was conducted by using free-air temperature increase facilities with three widely-planted cultivars, including Taiyou398 (TY, short growth duration indica hybrid rice), Jiuxiangnian (JXN, long inbred Yongyou1538 (YY, indica-japonica rice) a system subtropical China.Warming (1.9-2.0°C) had no significant yields TY JXN, but significantly decreased that YY 4.8% relative ambient treatment due reduction spikelet number. Compared treatment, head did not change while JXN increased 6.3% under conditions. Warming rates 6.6% 7.8%, chalky TY, 79.1%, 21.6%, 7.6%, respectively. Under conditions, amylose content 7.5% 8.8%, setback an average 41.5%.Warming could improve milling eating qualities (JXN YY) or maintain their yield, even though (YY). These results will provide better understanding for selection suitable future