Cytogenetic and Morphological Studies of Hybrids Between Kengyilia mutica and Roegneria kamoji (Poaceae:Triticeae)

doi:10.11733/j.issn.1007-0435.1999.02.009

›› 1999, Vol. 7 ›› Issue (2): 150-156.DOI: 10.11733/j.issn.1007-0435.1999.02.009

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Cytogenetic and Morphological Studies of Hybrids Between Kengyilia mutica and Roegneria kamoji (Poaceae:Triticeae)

Zhang Xinquan¹, Wu Bihua², Yang Junliang², Yan Ji², Zheng Youliang²

1. Department of Forage and Grass, Sichuan Agricultural University, Yaan 625104;
2. Triticeae Research Institute, Sichuan Agricultural University, Dujiangyan 611830

Online:1999-05-15 Published:1999-05-15

无芒仲彬草与鹅观草杂种的细胞学和形态学研究

张新全¹, 伍碧华², 杨俊良², 颜济², 郑有良²

1. 四川农业大学草业科学系, 雅安, 625014;
2. 四川农业大学小麦研究所, 都江堰, 611830

基金资助:
国家自然科学基金;四川省教委资助

Abstract

Abstract: Kengyilia mutica (Keng) J.L.Yang, Yen et Baum is hexaploid perennial grass of tribe Triticeae native to west China.K.mutica was hybridized with Roegneria kamoji Ohwi (2n=42=SSHHYY).Chromosome pairing behaviour at metaphaseⅠ and mophological characteristics in the parents and hybrids were studied.Meiotic configurations were 21.56Ⅰ +10.13Ⅱ+0.6Ⅲ (c-value=0.34) forr.Kamoji×,i>K.mutica, which indicated that K.mutica share two common genomes with R.kamoji.Hybride morphology was intermediate between the parents.

Key words: Kengyilia mutica, Roegneria kamoji, Intergeneric hybrids, Chromosome pairing, Morphology

摘要： 无芒仲彬草分布于我国西部,属多年生六倍体植物,将其与鹅观草(2n=42,SSH－HYY)进行杂交,对亲本及杂种F₁代花粉母细胞减数分裂中期Ⅰ染色体配对行为及形态学进行研究。结果表明,杂种F₁减数分裂染色体配对平均构型为:无芒仲彬草×鹅观草21.65Ⅰ+10.13Ⅱ+0.06Ⅲ(C-值=0.34),双亲有两个染色体组,其中-组具有较高的同源性,另-组亲缘关系较远,杂种穗部特征-般介于双亲之间。

关键词: 无芒仲彬草, 鹅观草, 属间杂种, 染色体配对, 形态学

Zhang Xinquan, Wu Bihua, Yang Junliang, Yan Ji, Zheng Youliang. Cytogenetic and Morphological Studies of Hybrids Between Kengyilia mutica and Roegneria kamoji (Poaceae:Triticeae)[J]. , 1999, 7(2): 150-156.

张新全, 伍碧华, 杨俊良, 颜济, 郑有良. 无芒仲彬草与鹅观草杂种的细胞学和形态学研究[J]. , 1999, 7(2): 150-156.

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Cytogenetic and Morphological Studies of Hybrids Between Kengyilia mutica and Roegneria kamoji (Poaceae:Triticeae)

无芒仲彬草与鹅观草杂种的细胞学和形态学研究

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