| 苏丹草与拟高粱远缘杂交初报 |
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| 引用本文： | 钟小仙,顾洪如,丁成龙,白淑娟,向阳海,刘朝晖.苏丹草与拟高粱远缘杂交初报[J].草地学报,2002,10(1):24-27. |
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| 作者姓名： | 钟小仙 顾洪如 丁成龙 白淑娟 向阳海 刘朝晖 |
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| 作者单位： | 1. 江苏省农业科学院土壤肥料研究所,南京,210014
2. 江苏省农业科学院遗传生理研究所,南京,210014 |
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| 基金项目： | 江苏省自然科学基金项目 (BK2 0 0 1176) |
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| 摘 要： | 通过苏丹草与拟高粱杂交，获得了远缘杂种F1代，远缘杂交成功率1％左右，F1种子的发芽率约20％。F1花粉母细胞减数分裂中期染色体镜检为10个二价体，染色体配对正常。采用RAPD分子标记技术对F1真假杂交种进行快速鉴定，提高了育种效率。杂种F1代大田表现对叶斑病轻感，F1代田间表现明显的抗／感分离，为苏丹草抗病育种提供了可能。
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| 关 键 词： | 苏丹草 拟高粱 远缘杂交 抗叶斑病 育种 抗病性 牧草 |
Study on Sorghum sudanese×S.propinguum interspecies hybridization |
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| ZHONG Xiao xian ,GU Hong ru ,DING Cheng long ,BAI Su juan ,XIANG Yang hai ,LIU Zhao hui.Study on Sorghum sudanese×S.propinguum interspecies hybridization[J].Acta Agrestia Sinica,2002,10(1):24-27. |
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| Authors: | ZHONG Xiao xian GU Hong ru DING Cheng long BAI Su juan XIANG Yang hai LIU Zhao hui |
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| Institution: | ZHONG Xiao xian 1,GU Hong ru 1,DING Cheng long 1,BAI Su juan 1,XIANG Yang hai 2,LIU Zhao hui 2 |
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| Abstract: | Interspecies hybrids(F 1)were obtained by distant crossing between S.sudangrass (Piper) Stapf.and S.propinguum (Kunth) Hifehe. The successful probability of hybridization is about 1% and germination of seed is 20% or so. It was observed ten bivalents chromosomes according to a microspore mother cell of F 1 at metaphase I during meiosis. The chromosome comparison of F 1 is normal. It will be increased the efficiency of breeding by using PAPD technique, which is applied to identified true or false of F 1. Interspecies F 1 plant is low infected leaf spot disease and resistant plant presented in F 2. It was supplied a probability for leaf spot resistant breeding. |
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| Keywords: | Sudan grass Distant crossing Leaf spot resistant breeding |
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