【作者】 余筱南； 刘爱玉； 朱君华；

【Author】 YU Xiao-nan, LIU Ai-yu, ZHU Jun-hua (Cotton Research Institute of Hunan Agricultural University, Changsha 410128, China)

【机构】 湖南农业大学；

【摘要】 2001-2003年,对棉花温敏雄性不育系特棉S-1的育性转换进行了时间、空间分布情况的观察记载,结果表明:不育始期在7月上、中旬,终止期在8月下旬,持续时间为40～50天;在不打顶的情况下,1～2果枝的1、2果节和3～5果枝的1果节为可育,6、7、8果枝为完全不育,9、10、11、12果枝的1～7果节为不育,以后每增加两个果枝相应减少1个果节为不育。更多还原

【Abstract】 The date of fertility changing and the position of sterile flowers in plant of Temian S-1 were investigated during 2001 and 2003. The results were as follow: The sterile flowers appeared in the first ten days to second ten days of July and ended in the last ten days of August and the sterile duration were 40 to 50 days. 1～2 fruiting positions in 1 st and 2nd productive branches and the first fruiting position of 3rd to 5th productive branches from lowest productive branch are fertile, and the other flowers from these productive branches are sterile. All flowers in 6th to 8th productive branches and 1st to 7th fruiting positions in 9th to 12th produtive branches are sterile; From that to top, as the position of productive branch in stem ascend two nodes, the sterile fruiting nodes in each productive branch reduce one correspondingly.更多还原