Studies on mechanism of trace pollen production of male sterile lines in Brassica napus
The mechanism of trace pollen production of male sterile lines in Brassica napus were studied. The results showed:(1) The flowers of 681A sterile line are smaller than its flowers of maintainer line and restorer line both, and with all yellow flower.The morphological character of flower organ in 681A can be divided six grades; (2)681A showed that fertile of pollen for low temperature condition and sterile of pollen for high temperature condition, and.. its critical temperature was about 10℃ That means that sterile of pollen in over 10℃ and fertile of pollen in below 10℃; (3) Bud size about 2mm was most sensitive stage in Low temperature; (4) The buds become smaller in high temperature treatment then that in low temperature treatment and the anthers length only 1 mm, triangle, milk white or yellow brown and no pollen, over 80 percent stigmas appear in ≤2mm buds, but other size buds a few stigma appear. In addition, it can be observed a phenomena of double pistils or three pistils, but number of stamen still was six as nomal flower.
Male sterile line heterosis trace pollen Brassica napus
LI Xun CHEN Ping Ping GUAN Mei GUAN Chunyun
Hunan Agricultural University, Changsha Hunan 410128, China
国际会议
第十二届国际油菜大会( The 12th International Rapeseed Congress)
武汉
英文
55-57
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）