Cytogenetic studies of cytoplasmatic male sterility in rapeseed
The focus of current rapeseed breeding programs is the creation of hybrids. That implies finding new sources of CMS and their transfer to genotypes that have the genes for other agronomically important traits. Different types of CMS were used in this study and they were transferred to inbred lines by backcrossing. CMS traits were analysed by evaluating the phase of stamens -anthers development, presence of pollen in anthers, pollen viability and analysis of meiosis-microsporogenesis. Anthers were frequently poorly developed and without pollen in male sterile flowers. Meiosis was regular (pachyten, diakinesis, metaphase I,anaphase Ⅰ, anaphase Ⅱ, telophase Ⅱ). The difference in CMS types can be made by the phase in which microsporogenesis is interrupted. Most often, the interruption happened after the phase of tetrads. Microspores were found in some cases and even pollen grains, but they were deformed and sterile.
Rapeseed CMS cytogenetics meiosis pollen viability
Atlagic Jovanka Marjanovic-Jeromela Ana Marinkovic Radovan Terzic Sreten
Institute of Field and vegetable Crops, 21000 Novi Sad Serbia
国际会议
第十二届国际油菜大会( The 12th International Rapeseed Congress)
武汉
英文
66-69
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）