| 滇—型和BT型杂交稻育性遗传和不育机理研究 |
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| 引用本文： | 贺和初.滇—型和BT型杂交稻育性遗传和不育机理研究[J].云南农业大学学报,1988,3(1):54-68. |
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| 作者姓名： | 贺和初 |
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| 作者单位： | 云南农业大学 昆明 |
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| 摘 要： | 以花粉可育率为主要遗传指标,对滇一型和BT型“三系”以及杂种F1、F2、BC1和AF1(不×保×恢])等世代的育性进行了观察分析。结果表明:滇一型和BT型不育系花粉败育以染败为主。二者不育系的不育基因和恢复系的恢复基因两两相互等位。供试材料有部分杂交组合表现为一对育性核基因与细胞质基因共同控制的遗传,而另一部分杂交组合表现为两对育性核基因与细胞质基因共同控制的遗传。恢复基因(R1、R2)的作用有强弱之分,并表现明显的加性效应。据此初步认为:粳型杂交水稻的育性基因型因组合不同而不尽相同,同一不育系或恢复系在不同的组合中可能表现不同的育性基因型。
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| 关 键 词： | 杂交水稻 育性遗传 雄性不育 |
| 收稿时间： | 1987-10-28 |
A Prefiminary Study on the Fertility Inheritance and Male Sterile Mechanism of Hybrid Rice of Dian 1 Type and BT Type |
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| He Hechu.A Prefiminary Study on the Fertility Inheritance and Male Sterile Mechanism of Hybrid Rice of Dian 1 Type and BT Type[J].Journal of Yunnan Agricultural University,1988,3(1):54-68. |
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| Authors: | He Hechu |
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| Institution: | Graduate Student, Yunnan Agricultural University |
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| Abstract: | This paper presents the observations and analysis of the fertility of MS, maintainer and restorer lines, hybrid F1, F2, BC1 and AF1 (A× B×R]) of Dian 1 Type and BT Type (hybrid rice) by the pollen fertility used as a main hereditary criterion.The results are as follows: 1.The pollen fertility of Dian 1 Type and BT Type hybrid rice is affected both by gametophytic and sporophytic genotypes; most of the aborted pollens of MS lines of the two types are stainable with I—KI solution.2.The fertility in some hybrid combinations of the two types is governed by the interaction of MS cytoplasm and a pair of nuclear genes, and in other hybrid combinations, the inheritanee is governed by the interaction of MS cytoplasm and two pair of nuclear genes (R1R1R2R2 or r1r1r2r2).There is a difference between R1R1 and R2R2 in their effects, and obvious dosage or additive effects exist between genes.Therefore, a preliminary conclusion can be reached that the fertile genotypes of Keng hybrid rice vary with combinations; the same MS line or reestorer line may express not all the same genotype in different combinations.3.The nuclear sterile genes of MS lines and nuclear fertile genes of restorer lines between Dianl Type and BT Type are both alleles. |
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| Keywords: | Hybrid rice Fertility inheritance Male sterility |
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