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新疆多年生小麦族植物染色体数的观察
孙根楼; 颜济; 杨俊良;
1.四川农业大学小麦研究所;2.四川农业大学小麦研究所 灌县;3.灌县
摘要:
本文对1987年采集于新疆的多年生小麦族(Triticeae Dum. )属种进行了细胞学观察。该地区多年生小麦族各属种的染色体数目变化范围是从2n=14到2n=84,前者主要存在于大麦属(Hordeum)、新麦草属(Psathyrostachys),而后者全部集中于赖草属(Leymus).其中染色体数目为2n=28和2n=42的频率最高,主要存在于鹅冠草属(Roegneria)和披碱草属(Elymus)。Roegneria gobicola, Roegneria kuqaensis, Roegneria tahelacona, Roegneria zhoasuensis的染色体数为首次报道。
关键词:  小麦族  水草属  披碱草属  偃麦草属  大麦属  新麦草属  鹅冠草属  染色体数  
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