摘要
利用15%多效唑可湿性粉剂200μl/L,在K型杂种小麦制种中对母本(不育系)于起身-拔节期一次性喷施,可降低株高,同时延缓生育进程,若花期相遇良好,可提高异交结实率,从而提高制种产量.结果表明,多效唑在7个组合中应用,平均株高降低15.5 cm,不育系开花期推迟1～2 d,平均异交结实提高率为47.2%.
In producing seeds of K-type hybrid wheat,we sprayed the maternal plants with 15% PP666 wettable powder 200μl/L only one time before SES(stem elongation stage),we found that their heights were decreased.The growth progress was slowed if their flowering time had been the same just right,and the fructification rate outcrossed was increased,so that the yield of seed production was increased. The result showed that the average decreased height was 15.5cm.The flower period delayed 1-2d.The average increasing rate of outcrossing rate was 47.2%,in applying PP666 to seven combinations.
出处
《河南农业科学》
CSCD
北大核心
2005年第7期22-24,共3页
Journal of Henan Agricultural Sciences
关键词
多效唑
K型杂种小麦
制种
PP666
K-type hybrid wheat
Seed production
