Acta Agrestia Sinica

›› 2002, Vol. 10 ›› Issue (4): 258-264.DOI: 10.11733/j.issn.1007-0435.2002.04.004

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Study on Growth,Development and Cytogenetics of Elymus canadensis×E.dahuricus Hybrid F1

YU Zhuo, SONG Yong-fu, LI Zao-zhe, YUN Jin-feng   

  1. Inner Mongolia Agricultural University, Huhhot010019, China
  • Received:2002-03-14 Revised:2002-05-08 Online:2002-11-15 Published:2002-11-15

加拿大披碱草×披碱草杂种F1的生育及细胞遗传学研究

于卓, 宋永富, 李造哲, 云锦凤   

  1. 1. 甘肃省草原生态研究所, 兰州, 730020;
    2. 甘肃省肃南县神鹿鹿业股份有限公司, 肃南, 734400
  • 作者简介:于卓(1958- ),男,内蒙古托克托县人,教授,博士,主要从事牧草饲料作物种质资源与遗传育种研究,已发表学术论文47篇,参编出版专著2部.E-mail:yz_yz5810@sina.com
  • 基金资助:
    国家自然科学基金项目(30160058);教育部留学回国人员科研启动基金项目(2001345)资助

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Abstract: The growth,morphology,pollen fertility,seed set and cytology of Elymus canadensis×E.dahuricus hybrid F1 were studied.The results showed that the growth potentiality of hybrid F1 was more than its parents,average height was 149.31cm,ear type was in the middle of parents,plant type tended to maternal,growth period tended to paternal,pollen sterility rate was 1.71%,seed set was 0;hybrid F1 is pentaploid(2n=5x=35),average chromosome pairing configurations at metaphase Ⅰ in pollen mother cells is 19.04Ⅰ+7.45Ⅱ+0.28Ⅲ+0.02Ⅳ,and has lagging chromosome and bridge fragment at anaphaseⅠ.

Key words: Triticeae grass, Wide hybrid:Growth development, Cytological analysis

摘要： 研究加拿大披碱草与披碱草种间杂种F1的生长、形态、花粉育性和细胞学。结果表明,杂种F1生长势明显超过双亲,平均株高149.31cm,穗型呈双亲中间型,株型偏向母本,生育期偏向父本,花粉可育率1.71%,自然结实率0。杂种F1为五倍体(2n=5x=35),其PMCM平均染色体构型为19.014+7.45+0.28+0.02,后期有落后染色体和染色体桥等不规则现象。

关键词: 小麦族禾草, 远缘杂种, 生育特性, 细胞学分析

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