拔节期阶段性干旱对小麦茎蘖成穗与结实的影响

李萍,尚云秋,林祥,刘帅康,王森,胡鑫慧,王东

Effects of Drought Stress During Jointing Stage on Spike Formation and Seed Setting of Main Stem and Tillers of Winter Wheat

LI Ping,SHANG YunQiu,LIN Xiang,LIU ShuaiKang,WANG Sen,HU XinHui,WANG Dong

表4 拔节期阶段性干旱对小麦主茎及不同蘖位分蘖可见小穗数的影响

Table 4 Effects of staged drought at jointing on spikelet number of main stem and tillers at different positions of wheat (spikelets/spike)

年份 Year 品种 Cultivar 处理 Treatment O Ⅰ Ⅱ Ⅲ Ⅰp Ⅳ Ⅱp Ⅰ1 平均单茎可见小穗数 Average visible spikelet number per spike 2017-2018 山农29 Shannong29 CK 18.2a 18.1a 17.5a 17.1a 16.5a 16.3a 16.1a 15.7a 17.3a T1 18.2a 17.9a 17.1a 16.9a 16.3a 16.1a 16.1a 15.5a 17.1a T2 18.0a 17.7ab 17.0ab 16.6ab 16.0ab 15.9ab 15.8a 15.3a 16.9ab T3 17.6a 17.2b 16.6b 16.2b 15.6b 15.4b 15.2b 14.9b 16.5b T4 17.3a 17.0b 16.3b 15.9b 15.5b 15.4b 15.0b 14.8b 16.4b 衡0628 Heng0628 CK 20.0a 19.3a 18.8a 18.2a 17.7a 17.0a 16.8a 16.5a 18.6a T1 19.7a 19.0a 18.4a 17.8a 17.3ab 16.5a 16.6a 16.4a 18.2a T2 19.4a 18.5ab 18.1ab 17.5ab 17.1ab 16.3ab 16.4a 16.1a 17.9ab T3 19.3a 18.3b 17.6b 17.0b 16.5bc 15.9b 15.8b 15.6b 17.6b T4 19.1a 17.9b 17.3b 16.7b 16.2c 15.8b 15.5b 15.4b 17.4b 2018-2019 山农29 Shannong29 CK 19.5a 19.1a 17.9a 17.5a 17.2a 16.9a 16.7a 16.2a 18.2a T1 19.4a 19.0a 17.8a 17.3a 17.1a 16.8ab 16.5a 16.0a 18.0a T2 19.2a 18.8ab 17.4ab 17.1ab 16.7ab 16.4ab 16.3a 15.6a 17.8ab T3 18.9a 18.2b 16.8b 16.6b 16.4b 16.1b 15.7a 15.4a 17.3b T4 18.7a 17.8b 16.4b 16.3b 16.0b 15.8b 15.5b 15.4b 17.2b 衡0628 Heng0628 CK 21.2a 20.6a 19.7a 19.5a 19.2a 18.5a 18.1a 17.4a 20.0a T1 20.9a 20.5a 19.3a 19.1a 18.9ab 18.2a 17.9a 17.0ab 19.5a T2 20.8a 20.1ab 19.0ab 18.9ab 18.5ab 17.9ab 17.4ab 16.8ab 19.4ab T3 20.6a 19.4b 18.5b 18.4b 18.1b 17.4b 17.1b 16.5b 18.9b T4 20.3a 19.0b 18.0b 17.9b 17.7b 17.1b 16.9b 16.2b 18.8b