大白花杜鹃三个天然居群的表型多样性分析
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摘要
以云南会泽县驾车乡分布的3个大白花杜鹃(Rhododendron decorum)天然居群为试材,选取90个植株的15个表型性状进行变异系数、Shannon-Weaver多样性指数分析、相关分析以及方差分析,研究了居群间和居群内的表型变异程度及规律,以期揭示大白花杜鹃天然居群的表型变异规律。结果表明:大白花杜鹃的株高、冠幅、叶片长、雄蕊数在居群间变异较为丰富。15个表型性状的变异系数(CV)范围在5.10%～27.44%,表明大白花杜鹃居群内表型性状离散程度不高。对大白花杜鹃的Shannon-Weaver指数分析表明,大白花杜鹃各居群具有丰富的多样性,总体表型多样性指数为3.385。
Fifteen phenotypic traits for 90 individuals in 3 natural populations of Rhododendron decorumfrom Huize county in Yunnan Province of China were investigated,using variance analysis,correlation analysis,Shannon-Weaver diversity index and cluster analysis,in order to reveal the variation pattern of the phenotypic in Rhododendron decorum.The results showed that there were significant differences in the plant height,crown diameter,length of leaf,No.of stamen of Rhododendron decorum among populations.Coefficient of variation(CV)varied from 5.10% to 27.44% showed the low variation of phenotypic traits.The Shannon-Weaver index analysis showed that there were rich diversity in Rhododendron decorum various populations and the total mean diversity index was 3.385.
Fifteen phenotypic traits for 90 individuals in 3 natural populations of Rhododendron decorumfrom Huize county in Yunnan Province of China were investigated,using variance analysis,correlation analysis,Shannon-Weaver diversity index and cluster analysis,in order to reveal the variation pattern of the phenotypic in Rhododendron decorum.The results showed that there were significant differences in the plant height,crown diameter,length of leaf,No.of stamen of Rhododendron decorum among populations.Coefficient of variation(CV)varied from 5.10% to 27.44% showed the low variation of phenotypic traits.The Shannon-Weaver index analysis showed that there were rich diversity in Rhododendron decorum various populations and the total mean diversity index was 3.385.
引文
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[3]杨婷,许琨,严宁.三种高山杜鹃的光合生理生态研究[J].植物分类与资源学报,2013,35(1):17-25.
[4]王继华,关文灵,李世峰.云南木本观赏植物资源(第二册)[M].北京:科学出版社,2016.
[5]宋杰,李世峰,刘丽娜,等.云南含笑天然居群的表型多样性分析[J].西北植物学报,2013(2):234-254.
[6]董文婧,申仕康,王跃华,等.都市园林植物云南樱花的表型多样性研究[J].广西植物,2016,36(3):349-354.
[7]李志勇,师文贵,李鸿雁,等.内蒙古3种生态型扁蓿豆遗传多样性与亲缘关系的分析[J].西北植物学报,2009,29(12):2421-2428.
[8] ZHAO L L,ZHANG Y,WANG P C,et al.Morphological and genetic variations of Sophora davidii,populations originating from different altitudes in the mountains of southwestern China[J].Flora-Morphology,Distribution,Functional Ecology of Plants,2016,224:1-6.
[9]徐斌,彭莉霞,杨会肖,等.杜鹃红山茶叶片主要性状的遗传多样性分析[J].植物研究,2015,35(5):730-734.
[10]王珍,王文和,张杰,等.主要观赏海棠品种的遗传多样性及其亲缘关系分析[J].果树学报,2014,31(6):1005-1016.
[11]周艳,李朝蝉,周洪英,等.大白杜鹃扦插繁殖技术研究[J].种子,2012(4):99-111.
[12]陆琳,彭绿春,宋杰,等.不同高山杜鹃品种花粉活力测定及贮藏方法研究[J].山西农业科学,2016,44(2):175-178.
[13]刘燕,王济红,陈训,等.大白杜鹃组培与快繁研究:基本外植体和初代培养基筛选[J].种子,2010(8):90-111.
[14]赵云龙,李朝婵,陈训.植物生长延缓剂对大白杜鹃的矮化效果[J].贵州农业科学,2013(4):268-290.
[15]郭宁,杨树华,葛维亚,等.新疆天山山脉地区疏花蔷薇天然居群表型多样性分析[J].园艺学报,2011,38(3):390-402.
[16]杨继.植物种内形态变异的机制及其研究方法[J].武汉植物学研究,1991(2):185-195.
[17]苏应雄,张雪,王文礼,等.红棕杜鹃不同海拔种群的表型多样性研究[J].西北植物学报,2017,37(2):356-362.
[18]司国臣,张延龙,赵冰,等.太白杜鹃天然居群的表型多样性[J].西北植物学报,2012(8):260-281.
[19]中国科学院生物多样性委员会.生物多样性研究的原理与方法[M].北京:中国科学技术出版社,1994.