Drought stress mitigation with humic acid in two Cucumis melo L. genotypes differ in their drought tolerance
BRAGANTIA, vol.78, no.4, pp.490-497, 2019 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 78 Issue: 4
- Publication Date: 2019
- Doi Number: 10.1590/1678-4499.20190057
- Journal Name: BRAGANTIA
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.490-497
- Keywords: melon, drought, plant breeding, lipid peroxidation, antioxidant enzymes, HYDROGEN-PEROXIDE, WATER-STRESS, PLANT, GROWTH, SUBSTANCES, SALINITY, LEAVES, YIELD, SALT
- Open Archive Collection: AVESIS Open Access Collection
- Gazi University Affiliated: Yes
Abstract
Different responses of two melon (Cucumis melo L.) genotypes (Semame, drought and salt-tolerant and Ananas, drought and salt- sensitive) to drought stress with or without humic acid ( HA) treatment were studied. The experiment was carried out under greenhouse conditions. The experimental design was two factorial randomized block with 4 replicates. HA treatment increased the shoot fresh and dry weights and leaf area of both genotypes under drought stress. HA stimulated accumulation of K and Ca ions, chlorophyll (SPAD value) and antioxidant enzyme activity (superoxide dismutase-SOD, catalase-CAT and glutathione reductase-GR) in both genotypes. This effect was more clear in the Semame genotype than in Ananas. As a result, HA treatment has been proved to influence the ability of melon genotypes to cope with drought stress and to increase their tolerance.