加工型辣椒种质资源遗传多样性分析  

Genetic Diversity Analysis of Processing Pepper Germplasm Resources

作　　者：韩娅楠[1] 行文妍 史艳艳[1] 程志芳[1] 常晓轲 董晓宇[1] 姚秋菊[1] Han Yanan;Xing Wenyan;Shi Yanyan;Cheng Zhifang;Chang Xiaoke;Dong Xiaoyu;Yao Qiuju(Vegetable Research Institute,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China;College of Horticulture,Henan Agricultural University,Zhengzhou 450002,China)

机构地区：[1]河南省农业科学院蔬菜研究所,河南郑州450002 [2]河南农业大学园艺学院,河南郑州450002

出　　处：《山东农业科学》2024年第1期34-42,共9页Shandong Agricultural Sciences

基　　金：现代农业产业技术体系项目(CARS-24-G-15);河南省重点研发专项(221111110100);河南省农业科学院自主创新项目(2023ZC031);河南省农业科学院创新团队专项(2023TD34);河南省抗病抗逆辣椒良种攻关项目(2022010502)。

摘　　要：为了解加工型辣椒种质资源的遗传多样性,本研究对33份加工型辣椒种质的24个农艺性状、8个品质性状和炭疽病抗性进行遗传多样性、相关性和聚类分析。结果表明,24个农艺性状中株幅、果梗长度、果肉厚的Shannon-Wiener多样性指数(H′)较大,性状遗传较丰富;单株产量变异系数最大(73.55%),心室数变异系数最小(9.18%)。单株产量与果肉厚、果纵径、果横径极显著正相关。8个品质性状中,辣椒素和二氢辣椒素含量的变异系数较大,分别为106.98%和112.44%。相关性分析表明,辣度与粗纤维和蛋白质含量显著正相关,与辣椒素和二氢辣椒素含量极显著正相关,与水分含量显著负相关。根据品质性状的隶属度将33份加工型辣椒种质聚为三大类群(Ⅰ、Ⅱ、Ⅲ),平均隶属度分别为0.32、0.47、0.64。炭疽病抗性与农艺、品质性状相关性分析表明,辣椒炭疽病抗性与水分含量、果纵径、心室数极显著正相关,与蛋白质、粗纤维含量极显著负相关。本研究结果可为加工型辣椒品种的应用及选育提供一定的理论依据。To evaluate the genetic diversity of processing pepper germplasm resources,24 agronomic traits,8 quality traits and anthracnose resistance of 33 processing pepper germplasm resources were analyzed by genetic diversity,correlation and cluster analyses.The results showed that among the 24 agronomic traits,the Shannon-Wiener diversity index(H′)of plant width,fruit pedicel length and pulp thickness were higher,indicating rich genetic diversity;the variation coefficient was the highest in yield per plant and the lowest in ventricle number,which was 73.55%and 9.18%,respectively.The yield per plant was significantly positively correlated with fruit flesh thick,fruit length,and fruit diameter.Among the 8 quality traits,the variation coef-ficients of capsaicin and dihydrocapsaicin contents were higher as 106.98%and 112.44%,respectively.The Scoville Heat Unit was significantly positively correlated with the crude fiber and protein,extremely signifi-cantly positively correlated with the capsaicin and dihydrocapsaicin contents,and significantly negatively cor-related with moisture content.The 33 processing-type pepper germplasms were clustered into 3 groups based on the average membership degree of the quality characters,and their average membership degree were 0.32,0.47 and 0.64,respectively.Correlation analysis between anthracnose resistance and agronomic and quality traits showed that anthracnose resistance was extremely significantly positively correlated with moisture content,fruit length and ventricle number,and extremely significantly negatively correlated with protein and crude fiber contents.These research results would provide theoretical bases for the application and breeding of processing-type pepper varieties.

关 键 词：加工型辣椒 种质资源 农艺性状 品质性状 遗传多样性 

分 类 号：S641.303[农业科学—蔬菜学]