We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Summer squash morphophysiology under salt stress and exogenous application of H<sub>2</sub>O<sub>2</sub> in hydroponic cultivation.
- Authors
Vieira Dantas, Maíla; Soares de Lima, Geovani; Gheyi, Hans Raj; Alves Pinheiro, Francisco Wesley; de Andrade Silva, Luderlândio; Dantas Fernandes, Pedro
- Abstract
Summer squash is a vegetable of significant acceptance in the market due to its economic and nutritional importance, with the potential for expansion in the food industry. In this context, this study aimed to evaluate the gas exchange and growth of summer squash plants subjected to a saline nutrient solution and exogenous application of hydrogen peroxide. The study was conducted in a greenhouse in Pombal - PB. The cultivation system used was the Nutrient Film Technique (NFT) hydroponic system. The experimental design was completely randomized, in a 4 x 4 factorial arrangement, whose treatments consisted of four levels of electrical conductivity of the nutrient solution - ECns (2.1, 3.1, 4.1, and 5.1 dS m-1) and four concentrations of hydrogen peroxide - H2O2 (0, 20, 40, and 60 µM), with three replications. The increase in the nutrient solution salinity from 2.1 dS m-1 reduced the leaf area and transpiration of the summer squash plants. Hydrogen peroxide at a concentration of 40 µM increased the root length, the instantaneous carboxylation efficiency, and the CO2 assimilation rate when the plants were subjected to the saline solution of 2.1 dS m-1. Also, the application of 60 µM H2O2 mitigated the effect of salt stress on the internal CO2 concentration and stomatal conductance of the summer squash plants.
- Subjects
PLANT transpiration; SQUASHES; GAS exchange in plants; SALINE solutions; HYDROGEN peroxide; ELECTRIC conductivity; SUMMER
- Publication
Comunicata Scientiae, 2021, Vol 12, p1
- ISSN
2176-9079
- Publication type
Article
- DOI
10.14295/CS.v12.3464