Influence of Flowering Characteristics on Spikelet Fertility under High Temperature
Ⅱyou 7954(medium heat sensitive)and Ⅱyou 7(heat tolerant)were subjected to heat stress (nine days or three days,38℃)in phytotron at flowering stage to determine the influence of flowering characteristics on spikelet fertility under high temperature.The results showed that high temperature resulted in early flowering of Ⅱyou 7 andⅡyou 7954,and the former had obvious flowering peak,yet the latter had low or indistinct flowering peaks.There was obvious interaction between temperature and exposure duration for Ⅱ you 7954,and spikelet fertility reduced as thermal exposure prolonged.High temperature duration and temperature changing pattern,which had an effect on flowering habit in rice,affected spikelet fertility greatly.
riceflowering characteristicsspikelet fertilityhigh temperature
国家科技期刊平台
NSTL
万方数据
维普
