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- Title
Production and Fiber Characteristics of Colored Cotton Cultivares under Salt Stress and H 2 O 2.
- Authors
Veloso, Luana Lucas de Sá Almeida; Azevedo, Carlos Alberto Vieira de; Nobre, Reginaldo Gomes; Lima, Geovani Soares de; Bezerra, José Renato Cortez; Silva, André Alisson Rodrigues da; Fátima, Reynaldo Teodoro de; Gheyi, Hans Raj; Soares, Lauriane Almeida dos Anjos; Fernandes, Pedro Dantas; Lima, Vera Lúcia Antunes de; Chaves, Lúcia Helena Garófalo
- Abstract
Salt stress reduces the yield and quality of colored fiber cotton production, but this problem can be mitigated by the foliar application of hydrogen peroxide in adequate concentrations. In this context, the objective of the present study was to evaluate the production and characteristics of fibers of naturally colored cotton cultivares under irrigation with low- and high-salinity water and leaf application of hydrogen peroxide. The experiment was carried out in a greenhouse under a randomized block design, arranged in 4 × 3 × 2 factorial scheme, corresponding to four concentrations of hydrogen peroxide (0, 25, 50, and 75 μM), three cultivares of colored fiber cotton ('BRS Rubi', 'BRS Topázio', and 'BRS Verde'), and two electrical conductivities of water (0.8 and 5.3 dS m−1), with three replicates and one plant per plot. Irrigation with water of 0.8 dS m−1 associated with a foliar application of 75 μM of hydrogen peroxide favored the lint and seed weight, strength, micronaire index, and maturity of 'BRS Topázio'. The 'BRS Rubi' cotton cultivar showed higher tolerance to salinity, followed by the 'BRS Topázio' and 'BRS Verde' cultivares regarding the yield of seed cotton weight, with reduction below 20% under water of 5.3 dS m−1.
- Subjects
COTTON; HYDROGEN peroxide; COTTON fibers; IRRIGATION water; SEED yield; ELECTRIC conductivity
- Publication
Plants (2223-7747), 2023, Vol 12, Issue 11, p2090
- ISSN
2223-7747
- Publication type
Article
- DOI
10.3390/plants12112090