Maturity, protein content and yield stability of cowpea in Uganda

Ddamulira, G.; Santos, Carlos Af; Alanyo, Mildred; Ramathani, Idd; Maphosa, Mcebisi

doi:10.1080/02571862.2016.1274919

Cited by 6 publications

(3 citation statements)

References 14 publications

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“…Only two genotypes did not differ statistically for protein content between the environments (MNC00-303-09E and Azulão). Ddamulira et al (2017), found three genotypes with a more stable protein content among the 28 evaluated in the three environments under test.…”

Section: Resultsmentioning

confidence: 87%

Influence of the environment and production components on the protein content of green cowpea grain

Araújo

Neto²,

Bertini³

et al. 2021

Revista Ciência Agronômica

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The protein content of the cowpea has proved to be very variable, especially of the green grain. The aim of this study, therefore, was to obtain information on the influence of the environment and genetic variability on the total protein content (TPC) of green cowpea grain, as well as to evaluate the effects of production components on this variable. Sixteen cowpea genotypes were evaluated in two environments (Pentecoste and Acaraú) in the state of Ceará, in a simple factorial scheme (16 x 2) for eight production components and protein content. The grain was collected while still green (after filling was complete -stage R5) and protein quantification was carried out using the Bradford method. Path analysis was performed in order to identify possible relationships between the agronomic variables and the protein content. There was a different response from the genotypes for each environment and in the interaction between genotype and environment. In Pentecoste, the MNC00-303-09E strain was highlighted, with a TPC of 6.602%, while in Acaraú, the Paulistinha cultivar stood out with a TPC content of 15.154%. For the genotypes under evaluation, selection for total protein content should be made in Acaraú via direct selection of the green-pod-grain weight, 100-grain weight and green-pod weight, and in Pentecoste, via indirect selection of the green-pod weight and green-grain yield.

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Section: Resultsmentioning

confidence: 87%

Influence of the environment and production components on the protein content of green cowpea grain

Araújo

Neto²,

Bertini³

et al. 2021

Revista Ciência Agronômica

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“…The average mean values recorded for the number of days to 50% flowering of 52 and 58 days during seasons 1 and 2 suggested that the genotypes were predominantly early to medium maturing. Low mean values for the number of days to 50% flowering are advantageous for the identification of early maturing varieties (Ddamulira et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Response of cowpea germplasm to bacterial blight in Uganda

Nantale

Wasswa²,

Tusiime³

et al. 2023

J Sci Agri

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Cowpea (Vigna unguiculata (L.) walp) is a legume crop mainly grown on small scale in low–input farming systems in Uganda. Cowpea bacterial blight (CoBB) disease caused by Xanthomonas axonopodis pv. vignicola (Burkh.) Dye is increasingly becoming a major hindrance to cowpea productivity. Sixty-four cowpea genotypes were evaluated for their response to bacterial blight disease (CoBB). Field experiments were carried out during the first and second rainy seasons using alpha lattice design with three replications. Data on disease incidence and severity, grain yield, days to 50% flowering, number of seeds per pod, pod length, number of peduncles per plant, and number of branches per plant were collected. Disease severity and incidence data was used to determine relative Area Under Disease Progress Curve (rAUDPC). Results showed significant differences (P ≤ 0.001) among the genotypes for rAUDPC in each season. The rAUDPC across the seasons indicated that genotypes NE 32, WC 32A, WC 26 and NE 44 with rAUDPC values ranging from 0.22 to 0.26 were resistant to CoBB whereas genotypes NE 31 and NE 40 with rAUDPC values 0.44 and 0.46 respectively were susceptible. The rAUDPC did not show any significant correlation with days to 50% flowering, yield and its components. This study suggested that the genotypes NE 32, WC 32A, NE 44, and WC 26 be used as prospective parents in breeding initiatives to develop bacterial blight-resistant varieties due to their high yields and resistance to CoBB.

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“…Pulses are crops cultivated for their dry seeds and they have much protein than cereals [1]. Cowpea (Vigna unguiculata (L.) Walp) is an important staple legume crop of African origin that is grown worldwide [2][3][4]. This legume provides an important source of protein, soluble sugar, amino acids, vitamins and minerals for human consumption and animal feeding especially in the lower income countries [2,4,5].…”

Section: Introductionmentioning

confidence: 99%

Influence of Different Cowpea (<i>Vigna unguiculata</i> (L.) Walp.) Genotypes from Burkina Faso on Proteases Inhibition

Sombié

Coulibaly

Hilou

et al. 2019

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Cowpea is an important protein crop widespread in Africa. The purpose of this research was to determine the content of trypsin and chymotrypsin inhibitors in different genotypes of cowpea seeds. Trypsin percentage inhibition showed about 13.5-fold variation (5.12% ± 1.47 to 70.52% ± 6.58) between the cowpea genotypes respectively for KVx 421-2J and Kondèsyoungo local. The chymotrypsin inhibitory activity varies among cowpea genotypes from 21.19 to 76.94%. The highest percent inhibitory activity was exhibited by KVx 396-4-5-2D on chymotrypsin. This study also showed significant correlations between type of cowpea genotype and trypsin inhibition potential and also between colour and chymotrypsin inhibition potential of cowpea seeds. Kondèsyoungo local, a landraceae genotype exhibited the high potential to inhibit the trypsin enzyme. Coloured seeds of cowpea genotypes possess higher percentage inhibition of chymotrypsin than the colourless ones (p < 0.05). The calculated mean of trypsin and chymotrypsin inhibition activities showed that Labagela local genotype possess the highest inhibition activity of both protease enzymes. The PCA components analysis and the dendrogram performed basis on the protease inhibitory activities divided the thirty-one genotypes of cowpea used in this study into three classes. The results presented in this work can contribute greatly to the planning of a cowpea breeding program aimed at reducing the content of proteases inhibitors in order to improve the nutritional value of seeds or to increase PI content for tolerance to stored grain pests.

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Maturity, protein content and yield stability of cowpea in Uganda

Cited by 6 publications

References 14 publications

Influence of the environment and production components on the protein content of green cowpea grain

Influence of the environment and production components on the protein content of green cowpea grain

Response of cowpea germplasm to bacterial blight in Uganda

Influence of Different Cowpea (<i>Vigna unguiculata</i> (L.) Walp.) Genotypes from Burkina Faso on Proteases Inhibition

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Maturity, protein content and yield stability of cowpea in Uganda

Cited by 6 publications

References 14 publications

Influence of the environment and production components on the protein content of green cowpea grain

Influence of the environment and production components on the protein content of green cowpea grain

Response of cowpea germplasm to bacterial blight in Uganda

Influence of Different Cowpea (&lt;i&gt;Vigna unguiculata&lt;/i&gt; (L.) Walp.) Genotypes from Burkina Faso on Proteases Inhibition

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Influence of Different Cowpea (<i>Vigna unguiculata</i> (L.) Walp.) Genotypes from Burkina Faso on Proteases Inhibition