Screening of rootstocks with resistance to chilling and continuous cropping but without compromising fruit quality for protected watermelon production  

作　　者：Kai Xu Zhixiang Lan Qing Liu Yuxing Xue Jingyi Yan Zhuangzhuang Su Mengjie Cheng Feishi Luan Xian Zhang Hao Li 

机构地区：[1]State Key Laboratory of Crop Stress Biology for Arid Areas,College of Horticulture,Northwest A&F University,Yangling 712100,Shaanxi,China [2]College of Horticulture and Landscape Architecture,Northeast Agricultural University,Harbin 150000,Heilongjiang,China

出　　处：《Vegetable Research》2022年第1期88-97,共10页蔬菜研究（英文）

基　　金：supported by the National Key Research and Development Program of China (2018YFD1000800);the National Natural Science Foundation of China (31972479);the Earmarked Fund for China Agriculture Research System (CARS-25);the Science and Technology Innovation Team of Shaanxi (2021TD-32);the Tang Scholar of Northwest A&F University.

摘　　要：Chilling stress and continuous cropping obstacles limit sustainable production of watermelons under controlled environments.Grafting of watermelon scions onto resistant rootstocks is an effective strategy currently used to overcome these environment limitations.However,currently used commercial rootstocks adversely affect watermelon fruit quality.The chilling tolerance and Fusarium oxysporum f.sp.niveum race 1(FON1)resistance of seven Cucurbit germplasms,including four watermelon germplasms(M08,TC,YL,and MY),two muskmelon cultivars(JT1 and JSM),and one commercial Cucurbita rootstock(QZ1)of watermelon,were explored in the current study.The effects of the rootstocks of these germplasms on watermelon resistance to chilling stress and continuous cropping obstacles were evaluated.TC rootstock showed the highest chilling tolerance and increased chilling tolerance of watermelon scion.All Cucurbit germplasms showed higher resistance to FON1 than watermelon cultivar N5(control).Watermelons grafted onto QZ1 showed the lowest wilt incidence and highest fruit yield but had the worst fruit quality after planting on soils continuously cropped for 11 years.Watermelons grafted onto TC showed higher resistance and yield and the best fruit quality.These findings indicate that TC has a large potential for use in grafting watermelon planted in continuously cropped soils(<10 years).TC can also be used as breeding rootstocks to improve watermelon resistance against continuous cropping obstacles without compromising fruit quality.

关 键 词：CHILLING CULTIVAR planted 

分 类 号：S651[农业科学—果树学]