Observation on chromosome behavior during meiosis of resynthesized Brassica napus
Four characters of the chromosome behavior during meiosis were observed in the new resynthesized Brassica napus F0 plants: 1) One group of chromatin separated into two during interphase; 2) Separation and asynchronous division of two groups of chromosomes, suggesting that the two groups of chromosomes are respectively from A and C genomes, which maintained independent in the PMCs; 3) Chromosome pairing within genomes occurred more frequently than that between A- and C-genome;4) Meiosis at later stages, such as anaphase Ⅰ, telophase Ⅰ and meiosis Ⅱwere generally normal. The study on genome separation and related chromosome behaviorsin new resynthesized B. napus is of importance for phylogenic study, breeding and transgenic risk control of this crop. The factors causing chromosome change in the initial generations were discussed in this paper as well.
resynthesized B. napus chromosome behavior meiosis
LI Jun FANG Xiaoping WANG Zhuan LUO Lixia HU Qiong
Institute of Oil Crops Research, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
国际会议
第十二届国际油菜大会( The 12th International Rapeseed Congress)
武汉
英文
320-322
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）