花期高温干旱对玉米雄穗发育、生理特性和产量影响

闫振华,刘东尧,贾绪存,杨琴,陈艺博,董朋飞,王群

Maize Tassel Development, Physiological Traits and Yield Under Heat and Drought Stress During Flowering Stage

YAN ZhenHua,LIU DongYao,JIA XuCun,YANG Qin,CHEN YiBo,DONG PengFei,WANG Qun

表3 不同胁迫处理下产量、产量构成要素与雄穗相关指标的相关分析

Table 3 Correlation of yield, yield components and tassel traits under different stress treatments

年份 Year 雄穗相关指标 Tassel-related trait ZD958 HN138 产量 Yield 穗粒数 Grains per ear 千粒重 1000 grain weight 产量 Yield 穗粒数 Grains per ear 千粒重 1000 grain weight 2018 主轴长 Tassel central branch length 0.7769** 0.8150** 0.3344 0.7330** 0.6034* 0.3704 主轴小花数 Central branch spikelet number 0.7283** 0.7111** 0.2555 0.5745* 0.5532* 0.3407 分枝数 Tassel branch number 0.5045 0.2377 0.4747 0.5363* 0.5928* 0.3608 分枝小花密度Tassel branch spikelet density 0.4037 0.3208 0.2157 0.0987 0.0746 0.3723 花粉量 Fresh pollen weight 0.9239** 0.8321** 0.5518* 0.8918** 0.8639** 0.6431** 花粉活力 Pollen activity 0.8568** 0.7896 0.5887* 0.6146* 0.7228** 0.3597 2019 主轴长 Central tassel branch length 0.6070* 0.5580* 0.3178 0.7899** 0.6511** 0.4437 主轴小花数 Central tassel flower number 0.7211** 0.7551** 0.4336 0.7341** 0.6079* 0.4898 分枝数 Tassel branch number 0.6441** 0.5593* 0.5658* 0.8242** 0.7488** 0.4379 分枝小花密度Tassel branch spikelet density 0.5432* 0.6943** 0.3372 0.8184** 0.7597** 0.5946* 花粉量 Pollen weight 0.7325** 0.7821** 0.2890 0.9314** 0.7433** 0.4112 花粉活力 Pollen activity 0.8268** 0.8279** 0.4186 0.9002** 0.6874** 0.4067