6-BA对厚皮甜瓜坐果节位叶片衰老及果实品质的影响  

Effect of 6-BA on Leaf Senescence on Fruiting-Node and Fruit Quality of Muskmelon

作　　者：朱立保 刘海河[1,2] 张彦萍[2] 张利云[1] 王正[2] 

机构地区：[1]河北农业大学园艺学院,河北保定071001 [2]河北工程大学农学院,河北邯郸056038

出　　处：《北方园艺》2014年第19期20-23,共4页Northern Horticulture

基　　金：国家西甜瓜产业技术体系建设专项资金资助项目(CARS-26-13);河北省科技支撑计划重点资助项目(11220801D;13226914D);邯郸市科学技术研究与发展计划资助项目(1222101059;1322101066-4)

摘　　要：以厚皮甜瓜品种‘迎春(F1)’为试材,研究了喷施不同浓度6-BA对坐果节位叶片的衰老、抗氧化酶活性及果实品质的影响。结果表明:适宜浓度的6-BA处理可显著提高坐果节位叶片抗氧化酶活性,降低超氧阴离子(O·2)产生速率和丙二醛(MDA)含量,延缓叶绿素和可溶性蛋白质含量的下降;同时提高了甜瓜果实单果重、可溶性固形物、可溶性糖和维生素C含量;说明6-BA可能通过抑制氧自由基对植物的侵害及膜脂过氧化程度的加深,使叶片保持较高的抗氧化酶活性,从而延缓叶片衰老,并对果实品质的提高起到改善作用。Taking muskmelon‘Yingchun（F1）＇as materials,the effect of spraying different concentrations of 6-BA on the senescence,antioxidant enzyme activity of fruiting-node leaf and fruit quality of muskmelon were investigated.The results showed that the antioxidant enzymes activities were significantly improved by 6-BA with a certain concentration,whereas a low level of O2^-·production rates and MDA contents were maintained compared with control,and then it delayed the decline of chlorophyll and soluble protein contents during the aging process in muskmelon plants.Besides,some fruit quality indexes such as single fruit weight,soluble sugar,soluble solids and vitamin C contents were enhanced in different degrees.In conclusion,it suggested that antioxidant enzymes activities could be increased through spraying 6-BA,which depressed the production rates of O2^-·and decreased the degree of membranous peroxide.Therefore,6-BA could delay the leaf senescence on fruiting-node and improve the fruit quality.

关 键 词：6-BA 厚皮甜瓜 叶片衰老 抗氧化酶 果实品质 

分 类 号：S652[农业科学—果树学]