Acta Agrestia Sinica

›› 2012, Vol. 20 ›› Issue (2): 358-362.DOI: 10.11733/j.issn.1007-0435.2012.02.026

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Morphologic Variation of Imported Dactylis glomerata

FU Xin-nian1,2, WANG Zan2, GAO Hong-wen2, SHI Shang-li1, WANG Xue-min1, WANG Yun-qi3, WU Xin-ming3   

  1. 1. College of Prataculture, Gansu Agriculture University, Lanzhou, Gansu Province 730070, China;
    2. Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
    3. Institute of Animal Science, Shanxi Academy of Agricultural Sciences, Taiyuan, Shanxi Province 030032, China
  • Received:2011-10-13 Revised:2011-11-15 Online:2012-04-15 Published:2012-07-05

国外引进鸭茅种质形态变异研究

富新年1,2, 王赞2, 高洪文2, 师尚礼1, 王学敏1, 王运琦3, 吴欣明3   

  1. 1. 甘肃农业大学草业学院, 兰州 甘肃 730070;
    2. 中国农业科学院北京畜牧兽医研究所, 北京 100193;
    3. 山西省农科院畜牧兽医研究所, 太原 山西 030032
  • 通讯作者: 高洪文,E-mail:gaohongwen@263.Net
  • 作者简介:富新年(1986- ),男,甘肃武威人,硕士研究生,主要从事牧草种质资源研究,E-mail:fuxinnian125@yahoo.cn
  • 基金资助:
    "十二五"国家科技支撑计划(2011BAD17B01)资助

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Abstract: Dactylis glomerata L. is an important forage grass and is widely cultivated internationally due to high forage yield, good quality and stresses tolerance. Eleven morphologic variations of 84 wild D. glomerata accessions were studied in this report showing extensive morphological variations. The most significant variance was in the number of spikelets per panicle, followed by the number of florets per spikelet and internode diameter, while the least variance in leaf breadth. Meanwhile, coefficient of variation and principal component analysis showed that four characters including the number of spikelets per panicle, the number of florets per spikelet, plant height and palea length are mainly factors which produced morphological variation of D. glomerata. Based on the morphological traits, cluster analysis showed that all 84 tested D. glomerata accessions were classified into 3 groups.

Key words: Dactylis glomerata, Morphological trait, Variation

摘要： 鸭茅(Dactylis glomerata L.)是在世界范围内广泛栽培种植的一种重要禾本科牧草,具有高产、优质、抗逆性较强等特点。以84份国外引进鸭茅种质为研究对象,对其11个形态学性状进行研究分析,旨在为筛选优良鸭茅种质提供依据。结果表明:不同种质鸭茅的植物形态学特征存在广泛变异,其中以小穗数变异最大,小花数、茎粗次之,而叶宽变异最小。变异系数与主成分分析结果显示,小穗数、小花数、株高和内稃长4个性状是造成鸭茅表型差异的主要因素。以11个形态性状为基础的聚类分析可将所研究的84份材料分为3类,每一类都由不同地域来源的鸭茅构成,表明鸭茅种质资源的多样性由品种间基因型不同所致。

关键词: 鸭茅, 形态性状, 变异

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