期刊
REVISTA BRASILEIRA DE ENGENHARIA AGRICOLA E AMBIENTAL
卷 27, 期 9, 页码 719-728出版社
UNIV FEDERAL CAMPINA GRANDE
DOI: 10.1590/1807-1929/agriambi.v27n9p719-728
关键词
Cichorium intybus L; soilless cultivation; salinity; cooling
The study aimed to evaluate the effects of temperature and salinity stresses on the growth, water status, production, and leaf characteristics of chicory. Cooling nutrient solution mitigated the negative effects of salinity, improving stem height, diameter, number of leaves, leaf area, production, water consumption, and maintaining membrane integrity within the studied salinity range (1.7 to 6.2 dS m-1).
The cooling of nutrient solutions prepared in brackish water can have several implications for plants grown in hydroponics. In this context, the present study aimed to evaluate the effects of temperature and salinity stresses in the root zone on the growth, water status, production, and leaf characteristics of chicory cultivar Folha Larga, exposed to four values of electrical conductivity of nutrient solution -ECns (1.7, 3.2, 4.7, and 6.2 dS m-1), applied at two temperatures (ambient temperature and controlled in the range between 25-30 & DEG;C). The randomized block design arranged in a 4 x 2 factorial scheme with four replications was used. Cooling nutrient solution mitigated effects of salinity on stem height and diameter, number of leaves, and leaf area of chicory; provided greater production and water consumption, stability into root-shoot relationships, and membrane integrity within the saline range studied (1.7 to 6.2 dS m-1).
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