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5 拔节期阶段性干旱对小麦主茎及不同蘖位分蘖结实小穗数的影响

Table 5 Effects of staged drought at jointing on fruiting 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 平均单茎结实小穗数 Average fruiting spikelet number per spike 2017-2018 山农29 Shannong29 CK 17.9a 17.6a 16.7a 15.9a 14.8a 14.1a 13.8a 13.1a 16.3a T1 17.7ab 17.4a 16.3ab 15.6ab 14.5ab 13.9ab 13.6a 13.1a 15.9ab T2 17.5ab 16.9ab 15.8b 15.1b 14.0b 13.5b 13.3ab 12.6a 15.6ab T3 17.1bc 16.5bc 15.5bc 14.8bc 13.9bc 13.3bc 12.7b 12.3b 15.3bc T4 16.4c 15.9c 14.5c 14.0c 13.1c 12.6c 12.1c 11.5c 14.7c 衡0628 Heng0628 CK 18.3a 17.3a 16.3a 15.7a 15.2a 14.5a 14.1a 13.5a 16.3a T1 18.0ab 16.8ab 15.9ab 15.2ab 14.7ab 13.9ab 13.8a 13.3ab 15.8ab T2 17.7ab 16.3ab 15.4b 14.7b 14.3b 13.7b 13.4ab 12.9ab 15.5ab T3 17.4b 16.2bc 15.0bc 14.4bc 13.9bc 13.3bc 12.9bc 12.5b 15.2bc T4 16.8b 15.3c 14.2c 13.7c 13.0c 12.7c 12.3c 11.8c 14.6c 2018-2019 山农29 Shannong29 CK 19.2a 18.5a 17.4a 16.6a 15.6a 14.9a 14.6a 13.7a 17.3a T1 19.1ab 18.4a 17.2ab 16.4ab 15.4ab 14.8ab 14.3a 13.3a 17.0ab T2 18.7ab 17.8ab 16.5b 15.7b 14.7b 14.2b 14.0a 13.1a 16.5ab T3 18.3b 17.5bc 15.9bc 15.4bc 14.4bc 13.8bc 13.5bc 12.6bc 16.1bc T4 17.6b 16.7c 14.8c 14.7c 13.8c 13.4c 13.0c 12.2c 15.6c 衡0628 Heng0628 CK 19.2a 18.1a 17.1a 16.5a 16.1a 15.4a 15.0a 14.3a 17.3a T1 19.0a 17.9a 16.7ab 16.1ab 15.8ab 14.9ab 14.8a 14.0a 16.8ab T2 18.5ab 17.2ab 16.1b 15.6b 15.2b 14.5b 14.3ab 13.6ab 16.5ab T3 18.2b 16.8bc 15.4bc 15.1bc 14.8bc 14.0bc 13.7b 13.1bc 16.0bc T4 17.3b 15.9c 14.7c 14.4c 14.0c 13.1c 13.0b 12.5c 15.6c