矮败小麦开花习性与异交结实率的研究  

Studies on Flowering habits and Allogamous Setting Percentgae of AaibiWheat.

作　　者：刘思衡[1] 吴升鑫 钟洁 吴良章 

机构地区：[1]福建农业大学农学系

出　　处：《福建稻麦科技》1995年第3期1-5,共5页Fujian Science and Technology of Rice and Wheat

摘　　要：矮败小麦的花器结构和开花习性与太谷核不育小麦相似。柱头生活力长达１０天。不育株的抽穗期较可育株晚２～５天，株高反及可育株的二分之一至三分之二。可育株顶部１～２片叶阻隔其花粉降落，减少不育株柱头接受花粉的机会，其异交结实率低，平均仅为４０～５０％。植株密度越大，异交结实率越低。开花期多雨也会降低异交结实率。The floral otructure and flowering habits of Aaibi wheatabout the same Taigu male sterile wheat. The vitality of stigma of the sterile Plant could last 10 days. The heading dates of the sterile plants were1-5 days later than the fertile plants. The plant height is 1/2 to 1/3shorter than that of the fertile plant. The Pollens were separated by theto 2 leaves at the top of the fertile plant. The opportunity that the stigmareceives pollens was decreased. The allogamous setting percentage is lower,40-50% only. The greater the plant density, the less setting percentage.The setting percentage is also reduced when the rainfall is more in flowering period.

关 键 词：矮败小麦 开花习性 异交结实率 小麦 

分 类 号：S512.101[农业科学—作物学]