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中国农学通报

中国农学通报 ›› 2007, Vol. 23 ›› Issue (6): 238-238.

所属专题： 小麦

• 农学 农业基础科学 • 上一篇    下一篇

小麦属2个种间杂种及3个亲本的核型分析

张新玲,石书兵,刘 俊,,张建立,,古丽杰米拉   

  • 出版日期:2007-06-05 发布日期:2007-06-05

Karyotype Analysis of Two Wheat Intergeneric Hybrids and Three Parents

Karyotype Analysis of Two Wheat Intergeneric Hybrids and Three Parents   

  • Online:2007-06-05 Published:2007-06-05

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摘要： 【研究目的】本研究旨在通过细胞学鉴定判断小麦属2个种间杂种的真实性，了解其亲本的染色体组及倍数性；【方法】本试验采用了常规染色体组型分析方法；【结果】分析和报道了小麦属2个种间杂种及其3个亲本的核型，根据核型分析的有关参数，阐明了两个杂种1894×Ps5、新7×Ps5及其亲本新7、1894和Ps5的核型特征，其核型分别为：新7(2n=6x=42)：2M+12sm+28m(2SAT)(2B)，1894(2n=6x=42)：2M+20sm+18m(2SAT)+2st(2B)，Ps5(2n=4x=28)：2M+12sm(2SAT)+12m+2st(2B)，1894×Ps5(2n=5x=35)：2M+19m+12sm+2st(2B)，新7×Ps5(2n=5x=35)：1M+21m+13sm(2B)；【结论】由此鉴定了2个杂种的真实性--均为真杂种，并确认了亲本新7和1894的第一套和第二套染色体均分别为A组和B组，倍数性均为6x，它们的第三套染色体属什么染色体组有待进一步研究。

关键词: 钾, 钾, 蔬菜, 产量, 品质, 抗逆性, 氮钾关系

Abstract: 【OBJECTIVE】 Our objective was to study the truth of hybrids were identified by cytology authentication and Genomens of chromosome and their ploidy. 【METHOD】 The experiment was conducted with normal Genomens chromosome analysis.【RESULTS】 The karyotype of two interspecific hybrids and their parents of Triticum were analyzed and reported in this paper. The result was that karyotype characteristics of two hybrids 1894×Ps5 and XIN7×Ps5 and their parents were clarified, The karyotype were XIN7(2n=6x=42):2M+12sm+28m(2SAT)(2B)and 1894 (2n=6x=42): 2M+20sm+18m(2SAT)(2B)and Ps5(2n=4x=28): 2M+12sm(2SAT)+12m+2st(2B)and 1894×Ps5(2n=5x=35): 2M+19m+12sm+2st(B)and XIN7×Ps5(2n=5X=35):1M+21m+13sm(2B)； respectively. 【CONCLUSION】 the truth of hybrids were identified, the both were true, and the chromosome 1and the chromosome 1 of XIN7 parent and 1894 parent were in A-Genomen and B-Genomen, respectively; their ploidy was 6X. which Genomens chromosome 3 belonged to did not studied.

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