1Qingdao City Academy of Agricultural Sciences,Qingdao 266100,Shandong,China|2Seed Management Station of Qingdao,Qingdao 266107,Shandong,China|3College of Horticulture and Landscape,Qingdao Agricultural University,Qingdao 266109,Shandong,China|4College of Horticulture and Landscape,Southwest University,Chongqing 400716,China
Abstract:In order to screen resistant cucumber rootstocks,the effects of rootstock grafting on yield,quality and control of Meloidogyne incognita of cucumber(Cucumis sativus L.)were studied in this experiment.Taking 7 pumpkin varieties as rootstock,2 cucumber varieties as scion,the root-knot nematode occurrence and severity of grafted cucumber were identified,the yield and quality of grafted cucumber were tested and compared by using own-rooted cucumber as control in greenhouse.The results showed that the yield of‘Cuilv’grafted with different rootstocks could be increased by 4.1%-10.7% in spring,‘Shuofeng No.9’by 15.0%-104.2% in autumn as compared with own-rooted,among which the yield increasing effect of grafted with‘Xindongli’was the best.‘Huangzhen No.3’took the next place.Rootstock grafting had no significant effect on soluble protein of cucumber fruits,as compared with own-rooted cucumber.Different scion cultivars grafted with various rootstock cultivars,the contents of soluble sugar,VC and nitrate in grafted cucumber could increase or decrease.Rootstock grafting had significant effects on controlling southern root-knot nematode,with 67.8 %-79.7% effect higher in spring,12.7% - 44.7% effect higher in autumn.Generally speaking,cucumber grafted with‘Xindongli’and‘Huangzhen No.3’has higher yield,better quality and good control effect of southern root-knot nematode.