狼尾草主要表型性状的主成分和聚类分析
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摘要
为加强野生狼尾草(Pennisetum alopecuroides)种质资源的研究与利用,对65份野生狼尾草种质资源表型性状进行研究。结果表明:野生狼尾草种质资源形态多样性存在一定差异,多样性指数在0.5～1.44之间,对狼尾草种质资源进行主成分分析,特征值大于1的主成分累计贡献率69.0%,决定狼尾草观赏性的指标性状为抽穗前株高、抽穗后株高、冠幅和花序数。通过聚类分析将所有种质划分为3大类群,育种过程中可以从第Ⅲ类群中选择株型紧凑,不易倒伏,花序多,抽穗前株高60 cm左右,盛花期株高100～110 cm资源作为育种中间材料。
We studied phenotypic traits of 65 wild Pennisetum alopecuroides germplasm by examining morphological traits. The result indicated that Pennisetum alopecuroides had a wide variety of morphological traits, and shannon-wiener index was between 0.5 and 1.44. The result of principal component analysis indicated the accumulative contribution rate of 3 principal components was 69.0%, and the main phenotypic traits was plant height before and after earing, crown width and the number of inflorescence. Cluster analysis showed that the wild Pennisetum alopecuroides germplasm had three groups. The plants that are compact in shape, lodging-resistant,inflorescence-abundant, about 60 cm of height before earing, and 100-110 cm in full-blossom period can be selected as the material during the breeding of Pennisetum alopecuroides.
We studied phenotypic traits of 65 wild Pennisetum alopecuroides germplasm by examining morphological traits. The result indicated that Pennisetum alopecuroides had a wide variety of morphological traits, and shannon-wiener index was between 0.5 and 1.44. The result of principal component analysis indicated the accumulative contribution rate of 3 principal components was 69.0%, and the main phenotypic traits was plant height before and after earing, crown width and the number of inflorescence. Cluster analysis showed that the wild Pennisetum alopecuroides germplasm had three groups. The plants that are compact in shape, lodging-resistant,inflorescence-abundant, about 60 cm of height before earing, and 100-110 cm in full-blossom period can be selected as the material during the breeding of Pennisetum alopecuroides.
引文
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[22]侯维,肖亮,易自力,等.7种能源草在酸性红壤中的性状比较及适应性评价[J].草业学报,2015,24(12):237-244.
[23]陶爱芬,祁建民,林培青,等.红麻优异种质产量和品质性状主成分聚类分析与综合评价[J].中国农业科学,2008,41(9):2859-2867.
[2]任继周.草业大辞典[M].北京:中国农业出版社,2008.
[3]武菊英,滕文军,王庆海,等.多年生观赏草在北京地区的生长状况与观赏价值评价[J].园艺学报,2006,33(5):1145-1148.
[4]王秀梅,刘娜.5种狼尾草的生物学特性及其园林应用[J].中国园艺文摘,2011(9):81-82.
[5]武菊英,滕文军,王庆海.耐旱多年生观赏草春季观赏性评价[J].华北农学报,2006,21(1):129-132.
[6]王庆海,袁小环,武菊英,等.观赏草景观效果评价指标体系及其模糊综合评判[J].应用生态学报,2008,19(2):381-386.
[7]武菊英,滕文军,袁小环,等.北京地区野生禾本科观赏草资源调查及繁殖特性研究[J].草地学报,2006,33(5):1145-1148.
[8]蒋举卫,薛红霞,宁晓飞,等.109份黄瓜种质资源主要农艺性状分析[J].河北农业大学学报,2018,41(1):38-43.
[9]肖亮,将建雄,易自力,等.广西省野生芒居群表型多样性研究[J].草业学报,2013,22(4):43-50.
[10]顾晓燕,郭志慧,张新全,等.短芒披碱草异位保护群体的表型多样性研究[J].草业学报,2015,24(5):141-152.
[11]李会彬,王丽宏,孙鑫博,等.河北野生狗牙根遗传多样性的SSR分析[J].河北农业大学学报,2017,40(6):60-64+71.
[12]刘英,白龙,雷家军.辽宁省野古草野生居群表型性状多样性研究[J].草业学报,2015,24(12):164-170.
[13]王丽宏,李会彬,孙鑫博,等.狼尾草野生种质资源的评价与分析[J].中国农业科技导报,2016,18(3):134-140.
[14]王丽宏,李会彬,娄世杰,等.观赏狼尾草新品系“LS-1”品种比较试验[J].北方园艺,2016(3):149-152.
[15]中国国家标准化管理委员会.《草品种审定技术规程》(GB/T30395-2013)[S].北京:中国标准出版社,2014.
[16]郭丽芬,徐宁生,张跃,等.云南红花种质资源主要农艺性状的遗传多样性分析[J].植物遗传资源学报,2012,13(2):219-225.
[17]张冬菊,李世超,吴鹏夫,等.基于表型和SRAP标记的切花菊品种遗传多样性分析[J].园艺学报,2014,41(1):118-130.
[18]张向前,刘景辉,齐冰洁,等.燕麦种质资源主要农艺性状的遗传多样性分析[J].植物遗传资源学报,2010,11(2):168-174.
[19]聂刚,张新全,黄琳凯,等.中国西南区野生芒居群表型变异研究[J].草业学报,2013,22(5):52-61.
[20]蒋林峰,张新全,付玉凤,等.中国主要鸭茅品种农艺性状变异研究[J].草业学报,2015,24(3):142-154.
[21]严学兵,周禾,王堃,等.披碱草属植物形态多样性及其主成分分析[J].草地学报,2005,13(2):111-116.
[22]侯维,肖亮,易自力,等.7种能源草在酸性红壤中的性状比较及适应性评价[J].草业学报,2015,24(12):237-244.
[23]陶爱芬,祁建民,林培青,等.红麻优异种质产量和品质性状主成分聚类分析与综合评价[J].中国农业科学,2008,41(9):2859-2867.