热带作物学报2025，Vol.46Issue(3)：597-610,14.DOI:10.3969/j.issn.1000-2561.2025.03.009
不同资源的莲子形态多样性及其变异分析
Morphological Diversity and Variation Analysis of Lotus Fruits from Different Sources
摘要
Abstract
To understand the morphological diversity and degree of variation in lotus fruits from various sources,81 dried mature lotus fruits were collected from different locations(including 59 wild populations,15 cultivated popula-tions,and 7 lotus cultivars)for morphometric measurements and systematic clustering analysis.There was substantial morphological variation among 81 accessions of lotus fruits.The longitudinal diameter ranged from 12.03 mm to 19.58 mm,the transverse diameter varied from 7.93 mm to 15.72 mm,the aspect ratio spanned from 1.01 to 1.97,and single grain weight fluctuated from 0.41 mm to 2.26 g.The morphology of lotus fruits from different sources was dif-ferent.The average longitudinal diameter,transverse diameter,longitudinal/transverse diameter ratio,and grain weight of American lotus fruits was 13.97 mm,11.98 mm,1.17 and 1.13 g,respectively.For wild Asian lotus fruits,the values was 16.52 mm,10.51 mm,1.58 and 0.98 g,respectively.For the 15 cultivated Asian lotus populations,the average val-ues was 15.81 mm,11.18 mm,1.42 and 1.07 g,respectively.For the 7 fruit lotus varieties,the average values was 16.71 mm,13.20 mm,1.27 and 1.53 g,respectively.The correlation analysis showed that the single fruit weight of lotus fruit was positively correlated with the longitudinal diameter and transverse diameter(P<0.05),and negatively correlated with the ratio of transverse diameter(P<0.05),but there were differences among different population sources.There was no significant correlation between longitude and latitude and morphological indexes of lotus fruits.The longitude was positively correlated with the ratio of longitudinal diameter and longitudinal diameter(P<0.01),but negatively corre-lated with transverse diameter and single grain weight(P<0.01).There was a significant positive correlation between latitude and longitudinal diameter(P<0.05),a very significantly positive correlation between latitude and longitudinal diameter ratio(P<0.01),a significantly negative correlation between latitude and transverse diameter(P<0.05),and a negative correlation between latitude and single grain weight(P<0.05).Systematic cluster analysis showed that 59 populations of wild lotus fruits could be divided into 2-5 branches.All lotus fruits of American lotus and the Chiang Mai population of Thai lotus formed the first cluster,and the remaining Asian lotus formed the second cluster.Morpho-logical traits of lotus fruits varied across the different years of collection.The results would provide scientific basis for lotus resource conservation,auxiliary identification,germplasm innovation and lotus fruit production.关键词
莲子/种质资源/形态性状/变异Key words
lotus fruits/germplasm resource/morphological character/variation分类
农业科学引用本文复制引用
罗佳琳,傅阳阳,刘青青,吴砚农,张文丽,郑福军,杨帆,王健,田代科..不同资源的莲子形态多样性及其变异分析[J].热带作物学报,2025,46(3):597-610,14.基金项目
云南省专家工作站(No.WKT066) （No.WKT066）
