草业学报2019，Vol.28Issue(1)：79-85,7.DOI:10.11686/cyxb2018114
海拔与黄花苜蓿表型性状的相关性研究
A study of the correlation between altitude and Medicago falcata phenotypic traits
摘要
Abstract
Medicago falcata possesses an abundantly diverse array of phenotypic traits, which are influenced by habitat, and so are correlated with climatic gradients linked to altitude, latitude and longitude.This research aimed to characterise the genetic variation in M.falcata through study of correlation between the phenotypic characters of M.falcata and altitude.In this experiment, M.falcata (Variety Xinjiang) was used as the study material, and 18phenotypic traits were studied, including plant height, number of branches, leaves, stems and flowers under the same latitude and longitude (N 43°43', E 86°94′) over an altitude range of 2100-2350m.These data provide a basis data for further research on genetic diversity and germplasm development in M.falcata.It was found that phenotypic traits are most variable with change in altitude.Plant height, leaf length, leaf width, internode length, stem diameter and floret length within inflorescences showed a trajectory across the altitude gradient of "declining-rising-declining" with decreasing altitude, with peak values at 2150m of altitude.The values obtained for the phenotypic index ranged from 1.30％-22.83％, and the average coefficient of variation was 8.49％.There was a significant correlation between altitude and plant height, inflorescence length, petal length and keel width, with correlation coefficients of 0.490, 0.601, -0.449 and -0.421, respectively.Other phenotypic traits of M.falcata showed no significant correlation with altitude, and considering the data as a whole, an altitude of 2150mis best suited for growth of M.falcata.关键词
黄花苜蓿/海拔/表型性状/变异Key words
Medicago falcate/altitude/phenotypic traits/variation引用本文复制引用
若扎·扎尔汗,李倩,王玉祥,张博..海拔与黄花苜蓿表型性状的相关性研究[J].草业学报,2019,28(1):79-85,7.基金项目
公益性行业(农业)科研专项(201403048-8)和国家自然基金地区科学基金项目(31860675)资助 （农业）
