Adaptability and yield stability of cowpea elite lines of semi-prostrate growth
            habit in the cerrado biome

Sousa, Massáine Bandeira e; Damasceno‐Silva, Kaesel Jackson; Rocha, M. de M.; Júnior, José Ângelo Nogueira de Menezes; Lima, Laíze Raphaelle Lemos

doi:10.5935/1806-6690.20170098

Cited by 4 publications

(7 citation statements)

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“…According to the records registered in Table 2, these are consistent with results obtained by Lin and Binns (1988), since genotypes with better yields in both favourable and favourable environments and Pif and Pid indices correspond to cultivars L-019 and Caupicor 50. These results are consistent with those reported by Nascimento-Filho et al (2009), Shiringani and Shimelis (2011), Nunes et al (2014), Silva et al (2016, Sousa et al (2017) and Melo et al (2018). In this sense, Nascimento et al (2009) stated that this method as well as the one proposed by Annichiarico (1992), are appropriate to run individually, due to their ease of use, application, and interpretation of genotypes adapted to favourable and unfavourable environments.…”

Section: Lin and Binns (1988)supporting

confidence: 90%

“…The presence of the GxE interaction makes it necessary to consider the adaptability and phenotypic stability of the evaluated genotypes. This is to carry out a rigorous and precise selection process when a new cultivar is being released commercially with general or specific adaptations to producing areas in the Colombian Caribbean (Nunes et al, 2014;Silva et al, 2016;Sousa et al, 2017;Melo et al (2018). The coefficient of variation that measures the experimental precision (Table 1) is considered of medium precision, for accusing a value between 10% and 20%, and agrees with values reported by Nunes et al (2014), Silva et al 2016, Sousa et al (2017) and Melo et al (2018).…”

Section: Contribution Of the Source Of Variation In Percentagementioning

confidence: 99%

“…Applying this methodology, Shiringani and Shimelis (2011), Nunes et al (2014), Silva et al (2016 and Melo et al (2018), found similar results related to the parameter Pi, which confirms that those with higher yields are also those with higher adaptability and stability. Nunes et al (2014), Sousa et al (2017) and Melo et al (2018) have applied this method in cowpea. This methodology breaks down the stability index to identify superior genotypes in favourable (Pif) and unfavourable (Pid) environments, using the same methodology of environmental classification by Eberhart and Russell (1966).…”

Section: Lin and Binns (1988)mentioning

confidence: 99%

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Adaptation and stability of cowpea (Vigna unguiculata (L.) Walp) bean cultivars in the tropical dry forest of Colombia

2019

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Cowpea (Vigna unguiculata (L.) Walp) is a source of low cost protein for food, and is currently used in family farming in northern Colombia. The aim of this study was to estimate the adaptability and phenotypic stability of the grain yield (per hectare) of nine advanced lines (plus control) of cowpea and a commercial control in eight contrasting environments of the tropical dry forest of the Colombian Caribbean region. We employed five analysis methods: Eberhart and Russell, Lin and Binns, Annichiarico, Carneiro, and Nascimento et al. A completely randomized block design was used with 9 genotypes +1 control and four repetitions per environment. The analysis of variance detected significant differences in environments, genotypes and in the genotype x environment interaction, confirming that the crops have become sensitive to differences of the environments. At the same time, we forced to consider adaptability and stability for the selection of the best genotype. The five methods of analysis coincided with identification of line L-019 as the best genotype due to its grain yield, adaptability and phenotypic stability. Therefore, L-019 is a new planting alternative for family agriculture of cowpea producers in the Colombian Caribbean.

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Section: Lin and Binns (1988)supporting

confidence: 90%

Section: Contribution Of the Source Of Variation In Percentagementioning

confidence: 99%

Section: Lin and Binns (1988)mentioning

confidence: 99%

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Adaptation and stability of cowpea (Vigna unguiculata (L.) Walp) bean cultivars in the tropical dry forest of Colombia

2019

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“…In the Cerrado region, producers have increased their interest in cowpea crop (Vigna unguiculata (L.) Walp. ), mainly in the second crop season, attracted by the very competitive cost (Melo et al, 2018) and supported by the recommendation of promising genotypes regarding grain yield and the possibility of adaptation to the farming systems (Sousa et al, 2017;Silva et al, 2017). However, the occurrence of climatic adversities has hampered the production and supply of high-quality products, endangering the opening of new markets for this crop (CONAB, 2019).…”

Section: Introductionmentioning

confidence: 99%

Biochemical quality of cowpea beans grown under water-deficit maintained with hydrogel

Fidélis

Silva²,

Rauber

et al. 2020

rcia

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Investigations related to the effects of the hydrogel use in a water-deficit conditions on the biochemical composition of the harvested products are scarce. The aim of this study was to verify the influence of hydrogel on the biochemical response of cowpea beans produced under water-deficit in southern Tocantins. The experiment was a randomized complete block design with four replications. The treatments were obtained in a 2x5 factorial scheme, being: two sources of hydrogel (Hydroplan-EB HyC and Polim-Agri PP) and five concentrations (0, 5, 10, 15, and 20kg ha-1). After harvesting, the grains of cowpea, BRS Vinagre cultivar, were ground and chemically analyzed. The oil content of the seeds agreed with the reference values. The use of Polim-Agri PP promoted the best levels of amino acids (0.38mg g-1) and proteins (243.22mg g-1) of the grains. The carbohydrate content of them (Ȳ= 81.44mg g-1) was better using Hydroplan-EB HyC, regardless of the concentration applied. The application of 6.28kg ha-1 of Polim-Agri PP provided the highest starch content (842g mg-1). The use of hydrogel improves the biochemical quality of cowpea beans produced under water deficit in southern Tocantins.

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“…In Brazil, cowpea is cropped historically in family-based systems in the north and northeast (Freire Filho 2011), with low technology. In the last few years, Brazilian production of cowpea has increased in the Midwest region, in large farms with high technological input, following the soybean growing season, when high yields are needed (Bandeira e Sousa et al 2017). To increase the yields in the poorest cowpea-producing regions, the development of agricultural practices is needed.…”

Section: Introductionmentioning

confidence: 99%

Are Cowpea-Nodulating Bradyrhizobial Communities Influenced by Biochar Amendments in Soils? Genetic Diversity and Symbiotic Effectiveness Assessment of Two Agricultural Soils of Brazilian Drylands

Oliveira

Sena

Nascimento

et al. 2019

J Soil Sci Plant Nutr

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The objective of this study was to evaluate the influence of biochar amendment on the bacterial genetic diversity and symbiosis in cowpea-nodulating rhizobial communities in two agricultural soils of Brazilian drylands. Vertisol and Ultisol surface layer soil samples were collected in the Brazilian semiarid region. The soils were mixed with biochar and cowpea seeds (BRS Marataoã) and sown in pots. Forty-five days after plant emergence, the nodule bacteria were isolated. The genetic variability of the nodule bacteria was evaluated by means of restriction fragment length polymorphism of 16S-23S rRNA intergenic spacer region (IGS-RFLP), and those that shared identical IGS-RFLP profiles were fingerprinted by BOX-PCR. By selecting of representative isolates in the genetic clusters, 27 bacteria were identified by 16S-23S IGS sequencing and symbiotically assessed. The IGS-RFLP dendrogram of the 73 isolates had 20 clusters; the multivariate correspondence analysis grouped both Vertisol treatments, and the Ultisol treatments were placed far away in the biplot. Ultisol showed higher bradyrhizobial diversity than the Vertisol. The fingerprinting indicated the presence of only three clonal colonies, showing high intraspecific diversity. The 16S-23S IGS sequences indicated the prevalence of bacteria related to Bradyrhizobium guangxiense in the Vertisol and Bradyrhizobium zhanjiangense in the Ultisol, in addition to the presence of three putative Microvirga spp. in the Ultisol. The symbiotic efficiency of 22 out of 27 bacteria was comparable with that of the inoculant strain Bradyrhizobium yuanmingense BR 3267. The genetic diversity of the cowpea-nodulating bradyrhizobia was not primarily affected by the biochar application in two agricultural soils of Brazilian drylands. Both soils harbored symbiotically efficient bacteria, without the influence of biochar amendment .

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Adaptability and yield stability of cowpea elite lines of semi-prostrate growth habit in the cerrado biome

Cited by 4 publications

References 0 publications

Adaptation and stability of cowpea (Vigna unguiculata (L.) Walp) bean cultivars in the tropical dry forest of Colombia

Adaptation and stability of cowpea (Vigna unguiculata (L.) Walp) bean cultivars in the tropical dry forest of Colombia

Biochemical quality of cowpea beans grown under water-deficit maintained with hydrogel

Are Cowpea-Nodulating Bradyrhizobial Communities Influenced by Biochar Amendments in Soils? Genetic Diversity and Symbiotic Effectiveness Assessment of Two Agricultural Soils of Brazilian Drylands

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