Selection of upland cotton for the Brazilian semi-arid region under supplementary irrigation

Carvalho, Jarbas Florentino de; Cavalcanti, José Jaime Vasconcelos; Farias, F. J. C.; Ramos, Jean Pierre Cordeiro; Queiroz, Damião Raniere; Santos, Roseane Cavalcanti dos

doi:10.1590/1984-70332019v19n2a26

Cited by 7 publications

(3 citation statements)

References 18 publications

(17 reference statements)

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“…Paradoxically, 80 years later, the region is facing one of the most tragic droughts with worse effects than the ones that occurred in the 1930s due to man's interventions in the environment, increasing, even more, the environmental, economic, and social damages. The cotton crop still stands out in the region as one of the few agricultural alternatives capable of generating income and employment for the population due to its characteristic resistance to the effects of drought, which is not the case for other traditional crops (Carvalho et al, 2019). However, due not only to the low rainfall that has been occurring lately but also to the distribution of rainfall interspersed with systematic Indian summers, 1 especially in January and February, cotton farmers in the region have become frustrated, which makes it essential to introduce and adapt the cotton production systems so that the remaining activity can be economically viable for family farmers.…”

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confidence: 99%

Rainwater harvesting and supplemental irrigation for cotton cultivation in Minas Gerais, Brazil

Adriana,

Emmanuel,

Jose

et al. 2023

World Water Policy

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The North of Minas Gerais, a large inland state in southeastern Brazil, is going through the worst drought of the last 80 years, only compared with the drought that occurred in the 1930s, when there was general devastation in the agricultural and livestock sector. Nevertheless, the cotton crop continues to stand out in the region as one of the few agricultural alternatives capable of generating income and employment due to its characteristic resistance to the effects of drought, which is not the case with other traditional crops. To this end, the Cooperativa dos Produtores Rurais de Catuti Ltda ‐ COOPERCAT (Cooperative of Rural Producers of Catuti) installed eight “Demonstration Units” (DUs) of cotton under supplemental irrigation through rainwater capture in the municipalities of Catuti, Mato Verde, Monte Azul, and Pai Pedro. This study aims to demonstrate that the adaptation of cotton production systems through the “Supplemental Irrigation” method in critical periods provides and guarantees family farmers sustainable cotton production and, on the other hand, to evaluate a production model suitable to the climatic reality of Northern Minas. Since the implementation of this technology, cotton fiber production has increased by 72% from 2015 to date in a 19% smaller area, and total cotton production increased by 58%. As of 2022, cotton producers continue to use this supplemental irrigation methodology, demonstrating that the technology is viable, impacts cotton production, and is effective as a resilience measure to climate change and drought. In addition, this technology proves to be in line with Brazilian public policies, adds value to cotton production, addresses food security, and acts as a model for irrigation initiatives in Minas Gerais and other areas of Brazil.

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Section: Introductionmentioning

confidence: 99%

Rainwater harvesting and supplemental irrigation for cotton cultivation in Minas Gerais, Brazil

Adriana,

Emmanuel,

Jose

et al. 2023

World Water Policy

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“…1 and I. 1 . The high genetic correlation (more than 0.93) between LCY/P and B/P Table 2 could explain the improvement of both LCY/P and B/P using direct selection for lint cotton yield/plant (Ped.…”

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confidence: 98%

“…1 ) and selection index involving yield and its components (I. 1 ). The highest realized and predicted genetic advances in the F 4 generation were obtained with the index Ped.…”

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confidence: 99%

Evaluation of genetic gains of some quantitative characters in Egyptian cotton cross (Giza 86 × Menoufi) under water deficit stress

El-Aty

Kamara

El-Moghazy

et al. 2022

Sci Rep

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This work was carried out to select cotton genotypes adapted to semi-arid climate conditions cultivated under irrigation for high yields and the standards of the fiber quality properties required by the textile industry. Also to determine the predicted and realized gains from different selection indices to improve some economic characters under water stress conditions. Except for lint percentage and Pressley index, F4 generation reduced PCV and GCV values for all studied characters due to reduction in genetic variability and heterozygosity due to different selection procedures that exhausted a significant part of variability. Except for fiber length and micronaire reading, mean performance in the F4 generation was revealed to be higher than those in the F3 generation for all studied characters. However, micronaire reading was lower (desirable) in F4 than F3 generation. Generally, genotypic correlations were higher than phenotypic correlations. Direct selection for lint index (Ped.3) was the most efficient in improving lint cotton yield/plant and bolls/plant. However, the multiplicative index involving all studied characters (I.5) exhibited the highest values for boll weight. Also, the Ped.2 index (direct selection for lint percentage) proved to be the most efficient in improving seed and lint indexes. Direct selection for lint cotton yield/plant (Ped.1) could produce the highest desirable values for lint percentage and seed per boll with a relatively reasonable yield. A selection index involving yield and its components (I.3) is recommended in improving uniformity index, fiber strength, and micronaire reading. The superior five families released from these indices in F4 generation exceeded the better parent for lint cotton yield/plant, bolls/plant, boll weight, seeds/boll, lint index, and reasonable fiber traits. These families could be continued to further generations as breeding material for developing water deficit tolerant genotypes.

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Using combining ability as a strategy of upland cotton selection for high fiber quality

et al. 2021

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Selection of upland cotton for the Brazilian semi-arid region under supplementary irrigation

Cited by 7 publications

References 18 publications

Rainwater harvesting and supplemental irrigation for cotton cultivation in Minas Gerais, Brazil

Rainwater harvesting and supplemental irrigation for cotton cultivation in Minas Gerais, Brazil

Evaluation of genetic gains of some quantitative characters in Egyptian cotton cross (Giza 86 × Menoufi) under water deficit stress

Using combining ability as a strategy of upland cotton selection for high fiber quality

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