【摘要】 微粉数量在不同不育系之间、不同播期之间、不同开花时期之间存在显著或极显著差异。随着播期推迟,不育系的微粉下降速率不同,以华油1087的微粉下降速度最快。秦油2号和郑杂4号的微粉量较多,与开花前0℃以上的积温之间存在极显著的正相关。更多还原

【Abstract】 There are great or remarkable differences in the number of trace pollen between sterile line, different sowing time and different florenscence. The decline speed of sterile line’s trace pollen will change if the sowing time is put off, and the most quick decline speed is HuaYou1087.QinYou2 and ZhengZa4 contain more trace pollen, which has an apparent relationship with the gathered temperatures above 0℃ and before blooming.更多还原