论文部分内容阅读
采用灰色关联分析(Gray correlation analysis),探讨辣椒生理生化性状与耐高温高湿的关系。对分别处于高温高湿和正常条件下的10个辣椒品种(系)21个生理生化性状耐高温高湿系数进行了分析和评价。依据各品种(系)的加权关联度对参试品种(系)进行了聚类分析,参试品种(系)中极耐高温高湿的品种(系)有I、G二个品种(系)。与耐高温高湿关联度最大的是花青素含量、过氧化氢含量、超氧化物歧化酶活性和脱氢抗坏血酸还原酶活性4个生理生化性状,它们在高温高湿双重逆境胁迫下所受的影响最大,与辣椒耐高温高湿性关系最密切。因而可以选用花青素含量、过氧化氢含量、超氧化物歧化酶活性、脱氢抗坏血酸还原酶活性等生理生化性状进行辣椒耐高温高湿的以性状为基础的选择,以提高选择效率。
Gray correlation analysis was used to investigate the relationship between physiological and biochemical characters and high temperature and high humidity in pepper. The high temperature and high humidity coefficient of 21 physiological and biochemical characters of 10 capsicum cultivars (lines) under high temperature, high humidity and normal conditions respectively were analyzed and evaluated. Based on the weighted correlation degree of each breed (line), cluster analysis was conducted on the tested varieties (lines). The varieties (lines) with extremely high temperature and high humidity in the tested varieties (lines) have two varieties of I and G (lines) . Among the four physiological and biochemical characters, anthocyanin content, hydrogen peroxide content, superoxide dismutase activity and dehydroascorbate reductase activity were the most closely related to the high temperature and high humidity. They suffered under the dual stress of high temperature and high humidity The greatest impact, and pepper the most closely related to high temperature and humidity. Therefore, anthocyanin content, hydrogen peroxide content, superoxide dismutase activity, dehydroascorbate reductase activity and other physiological and biochemical traits can be used to conduct pepper-based high temperature and humidity resistance based selection to improve the selection efficiency.