Potencial de genótipos de feijão-caupi para o mercado de vagens e grãos verdes

Sousa, J. L. M.; Rocha, M. de M.; Damasceno‐Silva, Kaesel Jackson; Neves, Adão Cabral das; Sousa, Raylson Rodrigues de

doi:10.1590/s0100-204x2015000500006

Cited by 15 publications

(13 citation statements)

References 8 publications

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“…The average immature grain yield was 1,599 kg ha -1 (Table 3), which was considered low, probably because most of the trials were conducted under irrigation and there was overgrowth during the production period in some of them. This average was lower than those of 1,957 and 2,390 kg ha -1 found by Sousa et al (2015) for rainfed and irrigated cultivation, respectively, when evaluating 16 cowpea genotypes in the municipality of Teresina, in the state of Piauí, Brazil, and than that of 2,827 kg ha -1 reported by Freitas et al (2016) for irrigated cultivation, when studying 12 cowpea genotypes under the soil and climate conditions of the municipality of Mossoró, in the state of Rio Grande do Norte. However, the average immature grain yield obtained in the present study was superior to that of 1,353 kg ha -1 observed by Silva et al (2013) for rainfed cultivation, when evaluating 8 cowpea cultivars under the edaphoclimatic conditions of the municipality of Serra Talhada, in the state of Pernambuco, Brazil.…”

Section: Resultscontrasting

confidence: 64%

“…The market for immature cowpea is highly promising, as it represents an important source of employment and income around the producing region (Freire Filho, 2011;Rocha et al, 2017a). However, it is currently characterized by the inexistence of improved cultivars and by the cultivation of landraces, generally with a low grain yield, late maturation cycle, and low disease resistance (Sousa et al, 2015). In addition, the pod is usually harvested at a stage with about 60 to 70% moisture (Sousa et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Simultaneous selection for yield, adaptability, and genotypic stability in immature cowpea using REML/BLUP

Sousa

Rocha

Damasceno‐Silva

et al. 2019

Pesq. agropec. bras.

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The objective of this work was to select cowpea genotypes simultaneously for high yield of immature grains, adaptability, and genotypic stability, taking into account genotype x environment interactions. The mixed models restricted maximum likelihood (REML)/best linear unbiased prediction (BLUP) were used. Sixteen cowpea genotypes were evaluated in nine environments, consisting of a combination of location (Pentecoste in the state of Ceará, Acaraú in Ceará, Teresina in Piauí, and Mossoró in Rio Grande do Norte, Brazil) and year (2012, 2013, 2014, 2015, and 2017). In all trials, a randomized complete block design with four replicates was used. Significant differences were observed for effects of genotypes and the genotype x environment interaction. Environmental variance was the largest component of phenotypic variance, followed by the genotype x environment interaction and genotypic variances. The immature grain yield of the evaluated cowpea genotypes interacts strongly with the studied environments, resulting in a low genotypic correlation between environments. The MNC00-595F-27, MNC05-847B-123, and BRS Tumucumaque cowpea genotypes present high yield of immature grains, adaptability, and genotypic stability, being the most suitable for cultivation in the states of Ceará, Piauí, and Rio Grande do Norte or in other environments with similar soil and climatic conditions.

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Section: Resultscontrasting

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Simultaneous selection for yield, adaptability, and genotypic stability in immature cowpea using REML/BLUP

Sousa

Rocha

Damasceno‐Silva

et al. 2019

Pesq. agropec. bras.

Self Cite

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“…In the Madalena assay, there was a significant difference (P < 0.01) for six of the seven characters evaluated. This evidences the presence of genotypic differences among the cowpea landraces evaluated in the study and, therefore, the possibility of gains with the selection, as found in other studies of this nature (LOCATELLI et al, 2014;SANTOS et al, 2014a;SOUSA et al, 2015). The varieties presented similar performances regarding the cycle in the condition of Madalena, with an approximate average of 78 days.…”

Section: Resultssupporting

confidence: 82%

Agronomic Potential and Genetic Diversity of Landraces of Cowpea of the State of Ceará

et al. 2019

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Landraces are sources of genetic variability, especially with respect to alleles that confer tolerance to biotic and abiotic factors and, therefore, can aid breeding programs in the development of promising cultivars. However, it is necessary to know this genetic patrimony at a level that allows its alleged use in breeding programs. In this sense, the objective of this study was: (i) to identify cowpea landraces that present agronomic potential and (ii) to evaluate the genetic diversity for future cross-breeding. For this, two trials (coastal and sertão of the state of Ceará) were carried out in distinct periods for the morphological and agronomic characterization of eight landraces of the state of Ceará plus two control cultivars. Both assays were conducted in a randomized complete block design with four replicates. Additionally, the molecular characterization by ISSR markers was done. Due to the presence of interaction genotypes by environments, it was observed for the conditions of the coast (Fortaleza), the traditional variety Boi Deitado and the conditions of the sertão (Madalena) to Vinagre Barrigudo de Caldo, as the most indicated to be superior in grain yield and in other agronomic characters. In order to increase the genetic base of the cowpea, we suggest crosses between genotypes Boi deitado and Cojó for the generation of segregating populations of future breeding programs.

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“…O feijão-caupi, espécie de alto valor nutritivo, proteico, é caracterizado por apresentar uma grande adaptabilidade nas regiões tropicais (BARROS et al, 2013). Isso se dá devido a sua grande variabilidade genética, e consequentemente versatilidade, justificando assim a sua utilização nos mais diversos sistemas de produção e finalidades (SOUZA et al, 2015).…”

Section: Fundamentação Teóricaunclassified