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王爱云, 陈冬玲, 蔡得田. 远缘杂交和异源多倍体化技术在水稻育种中的应用[J]. 植物科学学报, 2005, 23(5): 491-495.
引用本文: 王爱云, 陈冬玲, 蔡得田. 远缘杂交和异源多倍体化技术在水稻育种中的应用[J]. 植物科学学报, 2005, 23(5): 491-495.
WANG Ai-Yun, CHEN DONG-Ling, CAI De-Tian. Applications of Wide Hybridization and Allopolyploidization in Rice Breeding[J]. Plant Science Journal, 2005, 23(5): 491-495.
Citation: WANG Ai-Yun, CHEN DONG-Ling, CAI De-Tian. Applications of Wide Hybridization and Allopolyploidization in Rice Breeding[J]. Plant Science Journal, 2005, 23(5): 491-495.

远缘杂交和异源多倍体化技术在水稻育种中的应用

Applications of Wide Hybridization and Allopolyploidization in Rice Breeding

  • 摘要: 从野生稻遗传资源在育种中的作用出发,概述了栽培稻与野生稻远缘杂交和多倍体化在水稻育种中的应用。对远缘杂交中的杂交不亲和性以及杂种不育等问题采用激素处理、胚挽救等途径解决,对所获杂种从形态学、细胞学、生物化学以及分子生物学等多方面鉴定,对栽野杂种存在的野生性状通过选择与改造相结合的方法而淘汰,对其有利基因则加以选择和聚合以获得稳定优良品种。这些从理论上和实践上证明远缘杂交和多倍体化相结合的异源多倍体化是获得高产优质水稻新品种的一条新途径。

     

    Abstract: From the significance of the good germplasms for rice breeding,the applied study about the wide cross and polyploidization of cultivar and wild rice in rice breeding was summarized in this paper.Due to the difficulties of wide cross,such as hybrid incompatibility,hybrid sterility derived from traditional interspecific hybridization can use some methods such as hormone treatment,embryo rescue culture to solve them and got new varieties with good characters and heritability.The biochemical and molecular techniques to identify the hybrid were successful in overcoming cross incompatibility and obtaining interspecific and intergenomic hybrids.These advancements proved that the method to combine wide cross with polyploidization would be feasible in rice breeding for getting good rice cultivars.

     

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