Author(s): Melo, Alberto Soares de ; Dias, Vandeir Gouveia ; Dutra, Wellison Filgueiras ; Dutra, Alexson Filgueiras [UNESP] ; Silva Sa, Francisco Vanies da ; Barbosa Brito, Marcos Eric ; Almeida Viegas, Pedro Roberto
Date: 2020
Persistent ID: http://hdl.handle.net/11449/195428
Origin: Oasisbr
Subject(s): Fruits yield; Gas exchange; Photochemical efficiency; Fruits yield; Fruits yield; Gas exchange; Gas exchange; Photochemical efficiency; Photochemical efficiency
Made available in DSpace on 2020-12-10T17:34:21Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-07-01
Melon (Cucumis melo L.) is a crop of great socioeconomic importance in regions with semiarid climate, as found in Northeast Brazil. In this region water deficit is a usual condition as well as the main reduction factor of plant productivity. Due to this phenomenon, irrigation techniques are used to make available the amount of water needed for plant production. Therefore, this study evaluated the physiology and fruit production changes of 'Juazeiro' Piel de sapo melon plants under different water replacement rates. 'Juazeiro' melon was grown under four reference evapotranspiration replacement rates (40, 60, 80 and 100% of ETo) distributed randomly in blocks with 5 replicates. The plants were cultivated in the field, in an experimental area located in the Brazilian Northeast region, under hot and dry semiarid climatic conditions, and during the growing cycle the 'Juazeiro' hybrid melon plants were evaluated for leaf area, biomass accumulation, gas exchange, photochemical efficiency of photosystem PSII and production of fruits per plant. Application of water replacement rates of 100% ETo leads to highest growth, net photosynthesis, and fruit yield of 'Juazeiro' melon. Water replacement at 80% ETo can be used for 'Juazeiro melon under semiarid climatic conditions, but with small losses in fruit yield. Water replacement below 80% ETo leads to drastic reductions in growth, gas exchanges, quantum efficiency of photosystem II and fruit yield, which impairs melon production in semi-arid climate environments.
Univ Estadual Paraiba, Dept Biol Sci, Campina Grande, Paraiba, Brazil
Univ Fed Paraiba, Ctr Agr Sci, Areia, Paraiba, Brazil
Univ Estadual Paulista Julio de Mesquita, Dept Agron, Jaboticabal, SP, Brazil
Univ Fed Rural Semi Arido, Ctr Agr Sci, Mossoro, RN, Brazil
Univ Fed Sergipe, Campus Sertao, Nossa Senhora Da Gloria, SE, Brazil
Univ Fed Sergipe, Sao Cristovao, Sergipe, Brazil
Univ Estadual Paulista Julio de Mesquita, Dept Agron, Jaboticabal, SP, Brazil
