Effects of Salt Stress on Vegetative Growth Parameters and Ion Accumulations in Cucurbit Rootstock Genotypes

Authors : Ahmet BALKAYA

Pages : 11-24

View : 20 | Download : 6

Publication Date : 2016-07-30

Article Type : Other Papers

Abstract :Salt stress leads to decreases in plant growth, development, yield and quality changes of many plant species. Winter squash and pumpkins were recommended for use of rootstocks for the grafted watermelon, melon and cucumber growing in the saline soils. Grafted seedlings recently are being used widely for vegetable crops grown in many countries of the world. In this study, it was aimed to identify differences in salt tolerance of local winter squash, bottle gourd, pumpkin genotypes, and their interspecific rootstock hybrids insert ignore into journalissuearticles values(Cucurbita maxima x Cucurbita moschata); by using some vegetative growth parameters and ion accumulations. Salt was applied at 4,8,12, and 16 dS m-1NaCI salinity levels for each genotypes. Non-salt-treated plants were kept as controls. Plant vegetative growth parameters such as plant height, stem diameter, leaf number and leaf area were negatively affected by salt stress. The results showed that NaCI treatment caused an increase in Na+ ion concentration and decreased in K+ , and Ca++ ion concentrations. In conclusion, Cucurbit rootstock genotypes showed large variation in their response to salt tolerance. Seven pumpkin inbred lines insert ignore into journalissuearticles values(G2, G3, G4, G7, G29, G30, and G31);, three winter squash inbred lines insert ignore into journalissuearticles values(G9, G12, and G13);, three interspecific hybrids of C. maxima x C. moschata insert ignore into journalissuearticles values(G14, G15, and G40); were found as salt tolerant. We would highly recommend use of promising salt tolerant rootstock genotypes for grafted watermelon, melon and cucumber seedling production.
Keywords : winter squash, pumpkin, hybrid, rootstock, growth, resistance