粳稻二元不育系开花习性的研究  

Study on Behavior of Floral Characteristics of Binary CMS Lines

作　　者：吉立柱[1] 陆作楣[2] 

机构地区：[1]天津市蔬菜研究所,天津300384 [2]南京农业大学,南京210095

出　　处：《天津农业科学》2002年第1期14-17,共4页Tianjin Agricultural Sciences

摘　　要：采用两个开花习性差异明显的BT型粳稻不育系六千辛A和3726A与7个常规粳稻品种(异型保持系)配制了14个二元不育系。通过对这些不育系的开颖比例、高峰期内连续3天开颖率(GFQ)、午前开颖率、开颖历时、每日开花高峰、柱头外露率等开花习性的田间调查,结果表明,二元不育系开花习性同时受亲本不育系和异型保持系的影响;二元不育系对亲本不育系比较差的某些开花习性有明显的改良作用,反之,则较为困难。通过选用开花习性好的保持系配组,有可能得到开花习性进一步改善的二元不育系。japonica binary CMS (BCMS) combined by 2 BT-type CMS lines (Liuqianxin A and 3726A) having different behavior of floral characteristics and 7 conventional japonica rice varieties (or lines) are used to study about behavior of their floral characteristics.The results show that the behavior of floral characteristics of BCMS lines depends on their parents,and only the bad floral characteristics are more easily improved by BCMS lines,but BCMS lines with better floral characteristics can be obtained through male parents with good floral characteristics.

关 键 词：粳稻 二元不育系 开花习性 粳稻品种 

分 类 号：S511.22[农业科学—作物学]