| 秦素平， 张志雯， 董洪平， 安 倩， 陈于和.一个新小麦不育材料的形态特征及细胞学研究[J].麦类作物学报,2010,30(6):1034 |
| 一个新小麦不育材料的形态特征及细胞学研究 |
| Morphological and Cytological Studies of a New Wheat Male Sterile Strain “01 76” |
| |
| DOI：10.7606/j.issn.1009-1041.2010.06.009 |
| 中文关键词: 小麦 不育性 形态学 细胞学 |
| 英文关键词:Wheat Male sterility Morphology Cytology |
| 基金项目:河北省教育厅资助研究课题（2007116）。 |
|
| 摘要点击次数: 1696 |
| 全文下载次数: 2063 |
| 中文摘要: |
| 对一个新小麦不育材料（代号：01 76）的植株形态特征、花粉母细胞减数分裂过程及结实率进行了研究。结果表明，“01 76”开花时颖壳张开持续时间较长，花粉粒表现不育；根尖细胞有丝分裂正常，但花粉母细胞减数分裂过程出现异常，中期Ⅰ出现染色体易位、后期Ⅰ出现染色体落后、末期Ⅰ和末期Ⅱ出现染色体落后及多极分布现象，末期Ⅱ出现了三分体、五分体、七分体、八分体等。“01 76”自交结实率为零，但异交结实率较高，为68.5%～74.0%。说明该不育材料的不育性是由减数分裂异常引起的。 |
| 英文摘要: |
| A new wheat male sterile strain “01 76” was used to study its morphological characteristics, meiosis of pollen mother cells and seed setting percentage. The results showed that the lepicena of “01 76” had the property of longer opening when flowering with male sterility. The self pollination rate got as low as zero while its cross pollination rate reached as high as 74.0%. The mitosis of root tip cells displayed normally while the meiosis of pollen mother cells appeared abnormally. There were chromosome translocation at metaphase Ⅰ, chromosome lagging at anaphase Ⅰ, chromosome lagging ad multipolar distribution at both telophase Ⅰ and the telophase Ⅱ, and some non tetrad at telophase Ⅱ such as triad, pentad, heptad and octad. The male sterility of strain “01 76” mainly dues to chromosomal abnormality during the meiosis. |
|
查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
基本信息
