| 玉米孤雌生殖诱导系Stock6的表现及其遗传改良初报 |
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| 引用本文： | 刘志增,宋同明.玉米孤雌生殖诱导系Stock6的表现及其遗传改良初报[J].中国农业大学学报,1998(Z3). |
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| 作者姓名： | 刘志增 宋同明 |
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| 作者单位： | 北京海淀区圆明园西路2号中国农业大学(西校区);中国农业大学植物科技学院; |
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| 摘 要： | 对玉米孤雌生殖诱导系 Stock6进行了单倍体诱导测验,并针对其存在缺点进行了杂交和回交改良。试验结果显示,用 Stock6对高油玉米、甜玉米和普通玉米均能诱导出一定频率的单倍体(平均为0.94%)。在杂交籽粒中,Navajo 斑纹标记的表达强度受母本遗传背景影响较大,在甜玉米和高油玉米背景下表达较弱。通过对 Stock6的杂交或回交改良,已经获得了大批籽粒 Navajo 斑纹标记较深、胚面大、花粉量多和结实率高的后代穗行,其中个别穗行的诱导率较 Stock6有了明显提高。试验结果还初步证实了诱导性状的超亲分离特点。
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| 关 键 词： | 玉米 Stock6 单倍体 遗传改良 |
The Performance and Improvement of Corn Gynogenesis-inducer Stock6 |
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| Liu Zhizeng Song Tongming.The Performance and Improvement of Corn Gynogenesis-inducer Stock6[J].Journal of China Agricultural University,1998(Z3). |
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| Authors: | Liu Zhizeng Song Tongming |
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| Institution: | Liu Zhizeng Song Tongming (College of Plant Science & Technology,CAU,Beijing 100094) |
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| Abstract: | The gynogenesis-inducer Stock6 was used to induce maternal haploids.In the mean well,improvement of Stock6 was carried out to overcome its shortcomings by crossing,selling and backcrossing procedures.The results indicated that high oil corn,sweet corn and normal field corn all could be induced to produce haploids with certain frequencies by Stock6(average 0.94%).In hybrid seeds,the Navajo marker's expression was influenced greatly by the fe- male background.The marker traits expressed rather weak when the f... |
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| Keywords: | corn Stock6 haploid genetic improvement |
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