The Genome Constitution of Roegneria Grandis Keng et S. L. Chen (Poaceae: Triticeae)

doi:10.11733/j.issn.1007-0435.1996.03.007

›› 1996, Vol. 4 ›› Issue (3): 207-212.DOI: 10.11733/j.issn.1007-0435.1996.03.007

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The Genome Constitution of Roegneria Grandis Keng et S. L. Chen (Poaceae: Triticeae)

Zhang Xinquan, Yang Junling, Yen Ji

Triticeae Research Institute, Sichuan AgriculturaL University, DUiangyan 611830

Online:1996-08-15 Published:2012-07-11

大鹅观草的染色体组组成

张新全, 杨俊良, 颜济

四川农业大学小麦研究所, 都江堰市611830

Abstract

Abstract: Roegneria grandis was hybridized with R.ciliaris var,japonensis(Honda) B.R.Lu, Yen et J.L.Yang(2n = 28, SSYY), Elerus caninus(L.) L.(2N = 28, SSHH), and Pseudoroegneria spicata(Pursh) A.Love(2n = 28, SSSS).Chromosome pairing behaviour was studied in the parents and hybrids.It is concluded from this study that: (i)R.grandis is a strict allotetraploid species and contains the basic S and Ygenomes; (ii) a certain degree of homoeology exists between S and Y genomes of the species studied.

Key words: Roegeria grandis, Roegneria, Elymus, Pseudoroegneria, intergeneric hybrids, chromosome pairing, genome analysis

摘要： 以大鹅观草(Roegneria grandis Keng et S.L.Chen)与竖立鹅观草(R.ciliaris var.japonensis(honda)B.R.Lu,Yenet.Yang,Zn＝28,SSYY)、犬草(Elymus caninus(L.)L,2n＝28,SSHH)、拟鹅观草(Pseudoroegneria spicata(Pursh)A.love,2n＝28,SSSS)三个种进行杂交。对亲本及杂种F₁花粉母细胞减数分裂染色体配对进行分析。结果表明:(i)R.grandis是一种严格的异源四倍体植物,含有两个杂色体组;(ii)其由S和Y染色体组组成;(iii)S和Y染色体组间存在一定程度的部分同源性。

关键词: 大鹅观草, 鹅观草属, 披碱草属, 拟鹅观草属, 属间杂种, 染色体配对, 染色体组分析

Zhang Xinquan, Yang Junling, Yen Ji. The Genome Constitution of Roegneria Grandis Keng et S. L. Chen (Poaceae: Triticeae)[J]. , 1996, 4(3): 207-212.

张新全, 杨俊良, 颜济. 大鹅观草的染色体组组成[J]. , 1996, 4(3): 207-212.

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The Genome Constitution of Roegneria Grandis Keng et S. L. Chen (Poaceae: Triticeae)

大鹅观草的染色体组组成

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