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多花黑麦草与普通小麦的杂交 总被引:1,自引:1,他引:1
王凤宝 刘志勇 黄云祥 张继东 孟宪东WANG Feng-Bao LIU Zhi-Yong HUANG Yun-Xiang ZHANG Ji-Dong MENG Xian-Dong 《遗传》1995,17(1):19-21
多花黑麦草二倍体种,具有14条染色体。用普通小麦与多花黑麦草杂交,获得了杂种,杂交结实率为0.058%。杂种F1表现为畸形,其体细胞染色体数为28,F1植株产生的花粉败育,雌蕊不孕,用普通小麦和多花黑麦草回交均未获得回交种子,有待于用秋水仙素加倍染色体以获得异源四倍体。 相似文献
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豌豆半无叶突变体性状的遗传及在育种上的利用 总被引:9,自引:1,他引:8
以半无叶类型、普通类型豌豆为试验材料,对卷须性状的特征特性、遗传规律及在育种上的利用进行了研究。结果表明:半无叶类型豌豆品种卷须极其发达,能够在株间相互缠绕,形成棚架结构,显著地提高了品种的抗倒伏能力,同时改善了群体通风透光性能,显著提高了新品种的产量,是豌豆抗倒伏育种的重要原始材料。半无叶类型属单基因质量性状遗传,显隐性完全,卷须基因af和子叶颜色基因i表现连锁,位于1号染色体上,交换值为5.72%。
Abstract:Using semi-leafless pea and common pea,the authors studied tendril character,its inheritance law and how to use it in pea breeding.The results were as follows:Semi-leafless pea had well developed tendrils;They twined with each other and formed an arbor structure.This ideal structure had greatly increased lodging resistance capability,improved canopy′s air and light level,and remarkably increased new varieties yield.So,semi-leafless pea was one of the most important materials in lodging resistance breeding.Tendril gene,af,and seed color gene i,in semi-leafless pea was linked on chromosome Ⅰ,and cross-over value was 5.72%. 相似文献
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