| 普通大麦(4x)与球茎大麦(4x)种间F_1杂种形态学和细胞遗传学的研究 |
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| 引用本文： | 陈余荣,汪丽泉.普通大麦(4x)与球茎大麦(4x)种间F_1杂种形态学和细胞遗传学的研究[J].浙江大学学报(农业与生命科学版),1988(2). |
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| 作者姓名： | 陈余荣 汪丽泉 |
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| 作者单位： | 浙江农业大学农学系，浙江农业大学农学系 浙江农科院作物所 |
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| 摘 要： | 普通大麦(Hordeum vulgare L.2n=4x=28)与球茎大麦(H.bulbosum L.2n=4x=28)的种同杂交试验结果如下:无论是以普通大麦为母本,还是以球茎大麦为母本。在F_1杂种中都出现了三种类型植株,即似普通大麦的双单倍体,中间类型的混倍体和似球茎大麦的四倍体杂种。 F_1杂种根尖细胞染色体数目大多数为14～28条。在减数分裂期,双单倍体植株中所有球茎大麦染色体都已消失;混倍体和四倍体杂种植株在减数分裂期的染色体行为则表明普通大麦与球茎大麦染色体之间有高度的亲和性。因此,把有用的球茎大麦基因导入普通大麦是可能的。
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| 关 键 词： | 大麦 种间杂交 形态学 细胞遗传学 |
STUDY ON MORPHOLOGY AND CYTOGENETICS OF INTERSPECIFIC F1 HYBRIDS BETWEEN HORDEUM VULGARE (4x) AND H. BULBOSUM (4x) |
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| Chen Yurong Wang Liquan.STUDY ON MORPHOLOGY AND CYTOGENETICS OF INTERSPECIFIC F1 HYBRIDS BETWEEN HORDEUM VULGARE (4x) AND H. BULBOSUM (4x)[J].Journal of Zhejiang University(Agriculture & Life Sciences),1988(2). |
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| Authors: | Chen Yurong Wang Liquan |
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| Abstract: | Crosses between barley(Hordeum vulgare L.)and bulbous barley(H.bulbosum L.)were made.The results of experiment were as follow:In the reciprocal crosses,three types of hybrids,barley-like dihaploid,intermediate type mixoploid and bulbous barley-like tetraploid hybrid were observed,morphologically.The chromosome number in root-tip cells of F,hybrids was variable with 14-28 in most of the cells observed.At meiosis in the cells of dihaploid plants all chromosomes of H.bulbosum had been eliminated.The chromosome behaviour at meiosis in the cells of mixoploid and tetraploid hybrid suggested that there was high affinity existing between the chromosome of H.vulgare and H.bulbosum.Thus,it should be possible to transfer valuable genes from H.bulbosum into H.vulgare. |
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| Keywords: | barley interspecific cross morphology cytogentics |
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