Gene-cytoplasmic male sterility 按遗传特点分(Classified by the character of heredity) 孢子体不育型(Sporophyte Male Sterile),配子体不育型 (Gametophyte Male Sterile) 16
16 Gene-cytoplasmic male sterility ▲ 按遗传特点分 (Classified by the character of heredity) 孢子体不育型 (Sporophyte Male Sterile ) ，配子体不育型 (Gametophyte Male Sterile)
三、雄性不育性的一些基本问题 Basic knowledge of plant male sterility XC ●不育性产生How sterility happen? 多数是自发Gene mutation 核质互作主要来自种间杂交 Gene-cytoplasmic male sterility comes from the crossing by different species 17
17 三、 雄性不育性的一些基本问题 Basic knowledge of plant male sterility ●不育性产生 How sterility happen? 多数是自发 Gene mutation 核质互作主要来自种间杂交 Gene-cytoplasmic male sterility comes from the crossing by different species
基因的特征Genes 单隐性基因Recessive mono-gene 64% 显性Dominant gene 20% 18
18 ●基因的特征 Genes 单隐性基因 Recessive mono-gene 64% 显性 Dominant gene 20%
三、雄性不育性的一些基本问题 ●基因的作用时期The time of gene expressing 作用于小孢子发生之前(Before microsporogensis 结构性不育Structural sterile 19
19 ●基因的作用时期 The time of gene expressing 作用于小孢子发生之前 (Before microsporogensis →结构性不育Structural sterile 三、 雄性不育性的一些基本问题
作用于小孢子发生期间 During microsporogensis ●减数分裂meiosis 0 单核早中期Early and middle microspore stage ●二核晚期Late bicellular pollen stage Most cases 20
20 作用于小孢子发生期间 During microsporogensis ●减数分裂 meiosis ●单核早中期 Early and middle microspore stage ●二核晚期 Late bicellular pollen stage Most cases