南京农业大学学报2017，Vol.40Issue(5)：867-873,7.DOI:10.7685/jnau.201611033
诱导条件下不同配施钙肥处理减缓‘黄冠梨’果面褐斑病的研究
Effects of different application of cooperative calcium treatments on the incidence of brown spot in'Huangguan'pear fruit under induced conditions
摘要
Abstract
[Objectives] This study aimed to evaluate the effects of different application of cooperative calcium treatments on fruit quality,antioxidant capacity and mineral nutrient content of'Huangguan'pear,so that it could provide theoretical basis for reducing incidence of brown spot disease.[Methods] Treatments were set as follows:chelated calcium (Ca),chelated calcium combined with silicon(Ca+Si),chelated calcium combined with chitin D-glucosamine hydrochloride (Ca+D)and chelated calcium cooperated with carboxymethylcellulose sodium(Ca+CMC).Water was used as the control,and all the treatments were conducted by spraying on the 14-year-old'Huangguan'pear during young fruit stage and fruit expanding stage.Postharvest induced experiment was also investigated to study the effects on the incidence of brown spot.[Results] Compared with the control,different application of cooperative calcium could significantly improve the activities of peroxidase (POD)and superoxide dismutase (SOD),while decrease the activity of polyphenol oxidase(PPO) on both healthy and diseased fruits peel.Besides,effect on reducing the incidence of brown spot by spraying of the young fruit stage and fruit expanding stages was better than that of young fruit stages only.During the young fruit stage and fruit expanding stage,chelated calcium combined with chitin D-glucosamine hydrochloride treatment increased activities of POD and SOD by 26.98％ and 69.33％ respectively,but decreased the activity PPO by 16.61％ on the peel of diseased fruits.All the four calcium treatments were found to increase the calcium content but to decreased the potassium,magnesium and phosphorus content of peel on both healthy and diseased fruits.On diseased fruits peel,calcium content of Ca treatment and Ca+D treatment at fruit stages of young and expansion increased 23.67％ and 23.14％ more than control while potassium content decreased 9.52％ and 16.02％ respectively.Furthermore,Ca+D treatment decreased magnesium content by 13.19％ of control during the young fruit stage and fruit expanding stage.All cooperative calcium treatments could effectively reduce the incidence of brown spot in'Huangguan'pear fruit,in which the effect of Ca+D treatment was found to be the most significant in the whole growth period compared with control under induction conditions.The incidence of brown spot on'Huangguan'pear fruit significantly decreased by 81.82％.[Conclusions] In conclusion,Ca+D treatment could increase the antioxidant capacity of fruit peel,and effectively reduce the occurrence of brown spot under induction conditions.关键词
钙肥/甲壳素氨基葡萄糖盐酸盐/梨/果面褐斑病Key words
calcium fertilizer/D-glucosamine hydrochloride/pear/brown spot分类
农业科技引用本文复制引用
刘娜,金昕,谢昶琰,徐阳春,董彩霞..诱导条件下不同配施钙肥处理减缓‘黄冠梨’果面褐斑病的研究[J].南京农业大学学报,2017,40(5):867-873,7.基金项目
现代农业产业技术体系建设专项资金项目(CARS-29-15) （CARS-29-15）
