两优航2号亲本特性和开花习性观察  

Parental Characteristics and Flowering Habits of a Hybrid Rice Combination Liangyouhang 2

作　　者：游晴如[1,2] 杨东[1,2] 张水金[1,2] 涂诗航[1,2] 董瑞霞[1,2] 谢鸿光[1,2] 郑家团[1,2] 黄庭旭[1,2] 

机构地区：[1]福州国家水稻改良分中心,福建福州350018 [2]福建省农科院水稻研究所,福建福州350018

出　　处：《福建稻麦科技》2009年第4期17-20,共4页Fujian Science and Technology of Rice and Wheat

基　　金：国家科技支撑计划"杂交水稻规模化制种关键技术研究及产业化"课题(2008BAD93B02);国家863计划项目"水稻航天工程育种技术与品种创制"课题(2007AA100101);福建省科技重大专项"粮食作物育种技术研究"(2008NZ001-1);福建省财政专项--福建省农业科学院科技创新团队建设基金资助(STIF-Y04)

摘　　要：通过对两系杂交水稻两优航2号亲本(航2号与SE21S)特性及开花习性观察,结果表明:SE21S在福建沙县稳定的不育期较长,从7月至9月上旬具有稳定的不育期,在此时期进行制种安全可靠。两亲本的全生育期比较长,制种过程容易攻好苗架;且两亲本的播始历期非常接近,几乎没有播差期,花期容易相遇,两者抽穗高峰期花时相遇较吻合,是一个易制种获高产、稳产的新组合。In this paper, the characteristics and flowering habits of SE21S and Hang 2（the female parent and male parent of Liangyouhang 2） were investigated. The results showed that： SE21S had relatively long and stable sterility period from July to the first ten days of September in Saxian county of Fujian province. And its fertility was also safe and reliable. The two parents had quite a long whole growth period which was easier to reached a good seedling quality during seed production of hybrid rice. The duration from seeding to heading （DSH） of SE21S was almost equal to DSH of Hang 2, and there were hardly sowing gap stage of hybrid rice seed production between them. Moreover, their peak period of flowering time was basically identical at heading stage of rice. So, Liangyouhang 2 can be considered to a new hybrid rice combination to obtain high and stable yield seed production of hybrid rice.

关 键 词：两系杂交水稻 两优航2号 亲本 特性 开花习性 

分 类 号：S511.038[农业科学—作物学]