寒旱农业科学2025，Vol.4Issue(3)：226-232,7.DOI:10.3969/j.issn.2097-2172.2025.03.005
11份叶用莴苣种质资源表型性状多样性分析
Preliminary Analysis on the Diversity of Phenotypic Traits of 11 Leaf Lettuce Germplasms
摘要
Abstract
To filter high-quality resources of leaf lettuce suitable for cultivation in the cool regions of Gansu so as to provide cientific support for leaf lettuce variety breeding,the genetic diversity,correlation,and principal component analysis of 11 qualitative traits and 9 quantitative traits from 11 leaf lettuce germplasm materials were analyzed,which were selected from collected and preserved resources by our research group.The results showed that the 11 qualitative traits exhibited rich phenotypic variation in 11 leaf lettuce germplasms,and the coefficient of variation for the 9 quantitative traits ranged from 5%to 38%.Among the related quantitative traits of the two types of leaf lettuce,the coefficient of variation for weight per lettuce(heading lettuce)was over 25%.Correlation analysis of the quantitative traits of the 11 leaf lettuce germplasms showed that there was an extremely significant positive correlation between leaf width,petiole width and weight per lettuce plant in loose-leaf lettuce,and there was a significant positive correlation between petiole width and petiole thickness.There was a significant positive correlation between plant height and leaf length of heading lettuce.Plant width and leaf width,transverse diameter of heading lettuce and weight per heading lettuce was significantly positively correlated,whereas leaf length and number of leaves on heading lettuce was a significant negative correlated.Principal component analysis extracted four principal components,which accounted for 85.74%of the total information on leaf lettuce.Based on the comprehensive evaluation of phenotypic traits of 11 tested materials,the field comprehensive characters of SC01,SC04 and SC06 were excellent,they were suitable for promoting planting in the cold regions of Gansu Province.关键词
叶用莴苣/种质资源/表型性状/综合评价/多样性分析Key words
Leaf lettuce/Genetic resource/Phenotypic trait/Comprehensive evaluation/Diversity analysis分类
园艺学与植物营养学引用本文复制引用
王文珠,刘明霞,侯栋,李军红,罗涛..11份叶用莴苣种质资源表型性状多样性分析[J].寒旱农业科学,2025,4(3):226-232,7.基金项目
国家大宗蔬菜产业体系兰州综合试验站(CARS-23-G-19) （CARS-23-G-19）
甘肃省科技计划重大专项(24ZDNA005) （24ZDNA005）
甘肃省重点研发计划(25YFNA027) （25YFNA027）
甘肃省技术创新引导计划(24CXNP004、24CXNJ011). （24CXNP004、24CXNJ011）
