地毯草种质资源形态多样性  

Morphology diversity of Axonopus compressus germplasm

作　　者：廖丽[1,2] 陈玉华[1,2] 赵亚荣[1,2] 王晓丽[1,2] 白昌军[3] 王志勇[1,2] 

机构地区：[1]海南大学热带作物种质资源保护与开发利用教育部重点实验室,海南海口570228 [2]海南大学农学院,海南海口570228 [3]中国热带农业科学院热带作物品种资源研究所热带牧草研究中心,海南儋州571737

出　　处：《草业科学》2015年第2期248-257,共10页Pratacultural Science

基　　金：国家自然科学基金(31060266);海南省自然科学基金(310031)

摘　　要：对26份地毯草(Axonopus compressus)外部形态进行了初步研究。结果表明,地毯草种内的外部形态具有丰富的遗传多样性,不同指标间存在显著正相关或负相关(P<0.05)。地毯草种内形态变异系数最大的是生殖枝高度(71.11%),而种子长累积变异系数最小(4.41%),平均为19.29%,26个形态指标间呈极显著差异(P<0.01)。通过聚类分析,26份地毯草种质被分为三大类:高花序密度型、相对低花序密度型、中间型。A preliminary assessment of morphology characteristics of 26capetgrass(Axonopus compressus)accessions were conducted in the present study.The results showed these carpetgrass accessions performed a very rich diversity of morphology characteristic.There were significant positive correlations or negative correlations between these different indicators(P<0.05).The variant coefficient of fertile tillers was 71.11% which was the highest in all morphology characteristics.The variant coefficient of seed length was 4.41% which was the lowest with the average of 19.29%.There was very significant difference(P<0.01)between these indices.These tested 26 carpetgrass accessions were divided into three groups base on these morphology indices,which were high density of inflorescence,low density of inflorescence and intermediate type,respectively.

关 键 词：地毯草 种质资源 聚类 多样性 

分 类 号：S688.4[农业科学—观赏园艺]