Biometrical Evaluation and Yield Performance Assessment of Cowpea [Vigna unguiculata (L.) Walp] Landraces Grown under Lowland Tropical Conditions

Udensi, O.; Edu, E. A.; Ikpeme, E. V.; Ebiwgai, J. K.; Ekpe, D. E.

doi:10.3923/ijpbg.2012.47.53

Cited by 8 publications

(5 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…50% FLW ranged from 41 days to 57 days with an overall mean of 47.33±1.84 days. These results were in consonance with previous reports [15,16]. The erect and white-seeded Sampea-8 and Sampea-10 were significantly different (P = .05) in 50% FLW.…”

Section: Discussionsupporting

confidence: 93%

Lead Selection Traits Relationship in Cowpea (Vigna unguiculata (L.) Walp.): Is Grain Yield Still Key?

Abua¹,

Akpaniwo²,

Obok³

2014

AJEA

View full text Add to dashboard Cite

A field study was set to highlight the relationships and contributions of yield and yieldrelated traits to the choice of a superior cowpea variety. Five cowpea varieties, Sampea-7 (IAR 48), Sampea-8 (IAR 452-1), Sampea-10 (IAR 499-35), Sampea-11 (IAR 288) and Sampea-12 (IAR 391) were evaluated under normal growing conditions during the 2011/2012 growing season at the University of Calabar Teaching and Research Farm. The analysis of variance (ANOVA) for a randomized complete block design (RCBD) with three replications did show significant (P = .05) varietal differences for days to 50% flowering (50% FLW), days to 75% maturity (75% MTY), number of pods per plant (NPP), seed size (SDS), total plant biomass (TOB) and grain yield (GRY). The number of branches (NBR), pod length (PDL) and harvest index (HI) were not significantly different. The GRY had a positive correlation with all other yield-related traits except for the flowering traits and breeding for the former traits will be an indirect way to select for high grain yields. However, based on the weighted combined contributions of all the traits, the superiority of the varieties, Sampea-7 and Sampea-8, which were significantly different, followed an order different from their average grain yield order. Apparently, this re-ordered result highlights that the choice of a high performing cowpea variety could not be viewed as a function of high grain yield but a collective contribution of all other yield-related traits. These findings suggest that placing huge emphasis only on the economic yield (in this case, grain yield) as the main selection index could possibly fault the breeding and evaluation of superior cowpea varieties.

show abstract

Section: Discussionsupporting

confidence: 93%

Lead Selection Traits Relationship in Cowpea (Vigna unguiculata (L.) Walp.): Is Grain Yield Still Key?

Abua¹,

Akpaniwo²,

Obok³

2014

AJEA

View full text Add to dashboard Cite

show abstract

“…Owing to the inadequate supply, coupled with the high cost of protein rich foods of animal origin in the sub-Saharan African countries, exploration and exploitation of inexpensive and highly adapted alternative sources of protein of plant origin (Rajeev and Sridhar, 2008;Udensi et al, 2012a) becomes a sine qua non for increased life expectancy. According to Nielsen, (1991), Tharanathan and Mahadevamma (2003); Udensi et al (2011b), legumes are valuable sources of complex carbohydrates, protein and dietary fibers.…”

Section: Introductionmentioning

confidence: 99%

Radio-Sensitivity of Some Selected Landraces of Pulses to Gamma Irradiation: Indices for Use as Improvement and Preservation Techniques

Udensi¹,

Arong²,

Obu³

et al. 2012

AJEA

Self Cite

View full text Add to dashboard Cite

Aim: Effects of gamma irradiation on amino acid profile, proximate and anti-nutritional compositions of selected landraces of pulses were investigated. Methods: Seeds of Brown "Fiofio", White "Fiofio" (Cajanus cajan) and "Olaudi" (Vigna unguiculata) were exposed to gamma irradiation. Each variety was divided into five groups of fifty grams weight and was exposed to 200, 400, 600, 800Gray (Gy) doses of gamma irradiation from Cobalt 60 source while the fifth group served as control. Results: Our results revealed that the proximate, anti-nutritive factors and amino acid profile were significantly (P<0.05) reduced with increasing gamma irradiation dose. Though percentage germination was not significantly (P>0.05) affected, there was delayed germination and survival percentage became zero percent on exposure to 400Gy and above. "Olaudi" variety was less affected by the gamma rays exposure going by the result of the days to seedling emergence and percentage survival, making pigeon pea species more sensitive to the irradiation. Conclusion: Taking the results together, it does importantly suggest, however, that lower doses of gamma irradiation might be preferred for achieving the dual purpose of improvement and preservation but high enough to reduce the anti-nutritional factors.

show abstract

“…Dengan demikian, semua genotipe cabai yang digunakan memungkinkan untuk menuju tahapan seleksi selanjutnya. Udensi et al (2012) menyatakan bahwa karakter yang memiliki heritabilitas arti luas tinggi diduga memiliki nilai pemuliaan (breeding value) tinggi yang dipengaruhi oleh adanya genetik aditif. Gambar 3.…”

Section: Heritabilitas Tanaman Cabaiunclassified

Assembly of High Private Variety Children: Genetic Variability and Heritability Growth Character and Results

Fransisko¹

2020

Sinta. J. Sci. Tech. and Agric.

View full text Add to dashboard Cite

Limitations in obtaining superior varieties of red chili that are suitable to be planted in the highlands are one of the causes of the low yield of red chili in Rejang Lebong Regency. However, the availability of red chili germplasm as a genetic resource (SDG) in Rejang Lebong Regency is a good potential to be utilized to overcome problems in increasing the yield of red chili plants through the assembly of superior varieties. Assembling superior varieties of red chili has been done by researchers in order to get the desired plant character. This study aims to obtain information on the variability and heritability of growth character and yield of 18 red chili varieties in Rejang Lebong Regency. This research activity is the initial activity of developing the potential of germplasm that will be carried out so as to be able to overcome the problems in increasing the production of red chili in Rejang Lebong Regency. A series of research activities will produce superior varieties of red chili specifically for the highlands. The material used in this study was eighteen (18) varieties of chilli collections from various regions. The experimental design used was a Complete Randomized Block Design (RCBD) with a single factor, namely red chili plant varieties. The red chili varieties to be investigated for genetic variability and heritability in this study amounted to 18 and each treatment was repeated three times. The results showed that the highest estimated heritability was indicated by the leaf width variable at 96.69% and all observed variables had broad genotypic and phenotific variability.

show abstract

Biometrical Evaluation and Yield Performance Assessment of Cowpea [Vigna unguiculata (L.) Walp] Landraces Grown under Lowland Tropical Conditions

Cited by 8 publications

References 7 publications

Lead Selection Traits Relationship in Cowpea (Vigna unguiculata (L.) Walp.): Is Grain Yield Still Key?

Lead Selection Traits Relationship in Cowpea (Vigna unguiculata (L.) Walp.): Is Grain Yield Still Key?

Radio-Sensitivity of Some Selected Landraces of Pulses to Gamma Irradiation: Indices for Use as Improvement and Preservation Techniques

Assembly of High Private Variety Children: Genetic Variability and Heritability Growth Character and Results

Contact Info

Product

Resources

About