培矮64S在湛江的育性转换特性及应用研究  

Study on the Characteristic of Fertility Alteration and the Utilization of Pei'ai 64 S in Zhanjiang

作　　者：魏荷[1] 郭建夫[1] 王丰青[2] 黄永相[1] 朱宏波[1] 

机构地区：[1]广东海洋大学农业生物技术研究所,广东湛江524088 [2]广东海洋大学工程学院,广东湛江524088

出　　处：《安徽农业科学》2007年第2期385-387,共3页Journal of Anhui Agricultural Sciences

摘　　要：对培矮64S在自然条件下进行分期播种试验。结果表明:培矮64S在湛江地区有明显的不育期、育性转换期和可育期;不育期较长且育性稳定,连续不育天数为68d;可育期内自交结实率较高,但可育期较短;育性转换敏感期为抽穗前20～10天,最敏感期为抽穗前17～13天,育性转换临界温度约26.1℃。培矮64S在湛江自然生态条件下可以安全制种,也可自交繁殖,但自交繁殖产量不能保证。In order to study the characteristics of fertility alteration and the utilization of Pei＇ai64S in Zhanjiang, Leizhou Peninsula, Pei＇ai 64 S was sowed under natural conditions in different sowing dates in 2005 ～2006. The results showed that Pei＇ai 64 S had obvious sterile, fertilitytransitionary and fertile periods. The sterile period was 68 days long and stable. The fertile period was short, and Pei＇ai 64 S had a high self-seed rate in Zhanjiang, The sensitive stage of fertility alteration was 20-10 d before ear emergence, and the most sensitive stage was 17～13 d before ear emergence. The critical temperature was about 26.1 ℃. Therefore, Pei＇ai 64 S could be multiplied and produced hybrid-seeds safely, but it was difficult to ensure the production of self-seeds in Zhanjiang.

关 键 词：培矮64S 育性转换 临界温度 

分 类 号：S511.035[农业科学—作物学]