Hadley, P., E.H. Roberts, R.J. Summerfield, & F.R. Cowpea (Vigna unguiculata) is an annual leguminous crop which is grown for its seeds and leaves, and its residues can used as livestock fodder.It can withstand drought, short growing period and its multi-purpose use makes it an attractive alternative for farmers in marginal, drought-prone areas with low rainfall. Singh, 2003. A farmer can expect a yield of 9 to 12 quintal per hectare and green fodder yield of 165 to 192 quintal per hectare. Trop Agric (Trinidad) 48: 277–282. CB27 began flowering 44 days after planting, while IT97K‐556‐6 delayed flowering until after 70 days. Mol Gen Genet 229: 57–66. Sheppard (Ed. Google Scholar. Article  This will result in 26 days gain in time to flowering with 5% selection intensity from the F2 to F3 generation. © 2021 Springer Nature Switzerland AG. & T.T. II. A new gene affecting the time of flowering in soyabeans. Chang, 1985. Summary Other designations. ), Practical Genetics, pp. DTF varied from 22 days (for the genotype BB10–4–2-5) to 59 days (Kapita black) (Table 2). Here, we report quantitative trait locus (QTL) analysis of the days to flowering (DTF) and plant height (PH) using a dense SNP linkage map recently developed from a … University of Reading U.K. Ishiyaku, M.F. (adsbygoogle=window.adsbygoogle||[]).push({}); Use this article as a guide for your own research paper (if properly cited). Euphytica This is a preview of subscription content, log in to check access. Voldeng, 1980. & Craufurd, P.Q. A narrow sense heritability of 86% was estimated for this trait. volume 142, pages291–300(2005)Cite this article. Cowpea breeding. Ehlers, J.D. In West and Central Africa, photoperiod is the most important environmental variable affecting time to flowering in cowpea. F.), Assessment of Morphological, Nutritional and Cytological Characteristics of Some Nigerian Cucurbita Species, Simple Sequence Repeat (SSR) Genetic Analysis of Cassava Mosaic Disease Resistance in Selected F1 Populations Of Cassava, In-Vitro Morphogenic Performance of Ginger (Zingiber Officinale) as Influenced by Media Variations, Effects of Plants Spacing and Organic Manure Rates on Yield and Nutrient Composition of Waterleaf (Talinum Triangulare). Fortunately the first mild one we used worked and we haven’t sprayed a second time and the cowpeas are close to maturity. If there are several buds left after defoliation, the plant will regenerate. Twenty-nine diverse genotypes of cowpea (Vigna unguiculata) were grown in approximately 30 photothermal environments in Nigeria and Niger, with mean temperatures ranging from 19° to 30°C, photoperiods from 10 to 16 h d −1 and saturation deficits from 0.5 to 3.1 kPa.Twelve of these genotypes were insensitive to photoperiod. Wiley, New York. & C. Dean, 1998. Levy, Y.Y. Plant Cell 10: 1973–1989. Frequency distribution of the trait in the various populations indicated quantitative inheritance. pp. Sufficient seed of F1, F2, F3 and backcross populations were generated. Yeates, 1994. Evidence of Maternal Effect on the Inheritance of Flowering Time in Cowpea (Vigna unguiculata (L.) Walp.) Mean performance of cowpea genotypes. A genetic study of pod and seed characters in Vigna. A genetic and physiological analysis of late-flowering mutants in Arabidopsis thaliana. & R.L. Time to flowering and maturity is an important adaptive feature in annual crops, including cowpeas (Vigna unguiculata (L.) Walp.). & R.H. Matson, 1964. Determinisme genetique de la precocite’ chez Vigna unguiculata (L.) Walp Agron Trop 22: 309–318. An analysis of linkage in quantitative genetics. Ray, J.D., K. Hinson, J.E.B. Genetics of flowering response in mungbean. J Hered 78: 160–162. Ph D. Thesis. A quantitative model of reproductive development in cowpea [Vigna unguiculata (L.) Walp] in relation to photoperiod and temperature and implications for screening germplasm. A Novel Gene ef1-h Conferring an Extremely Long Basic Vegetative Growth Period in Rice. ), Advances in Legume Science, pp. Seventeen photoperiod-sensitive genotypes of cowpea ( Vigna unguiculata) were grown in approximately 30 photothermal environments in Nigeria. 4th ed. We are here to answer your questions. Cowpea aphid‐borne mosaic virus (CABMV) is a major virus disease that causes substantial cowpea yield loss. & A.E. Studies on Fertilizer Nitrogen and Cutting Management of Sown Grass and Legume Pastures in Pure and Mixed Swards. Cowpea [Vigna unguiculata (L.) Walp.]. The crop comes to harvest by 60 to 70 days. Subscription will auto renew annually. Crop Sci 42: 348–354. Philippine Agriculturist 33: 263–277. Crop Science project topics Australian Journal of Plant Physiology 24(2): 151–158. 405–417. 2005). pp. The induction and maintenance of flowering in Impatiens. The mean days to flowering of the test genotypes was 41 days. Google Scholar. Principles of Plant Breeding, pp. ), an annual legume, is also commonly referred to as southern pea, blackeye pea, crowder pea, lubia, niebe, coupe or frijole. Jinks, 1973. Development in Cowpea (Vigna unguiculata). CAS  - 176.9.79.208. and for leaf growth 20 °C. pp. Crop Sci 35: 1001–1006. Plant Cell 5: 1147–1155, Article  The separation of epistatic from additive and dominance variation in generation means Heredity 12: 173–196. Inheritance of flowering and length of blooming period in Phaseolus vulgaris L. J Ame Soc Hort Sci 85: 366–373. Leyna, H.K., S.S. Korban & D.P. Genotype ZM2960 was relatively early maturing with 60 days to maturity. Soyabean Genet Newsl 7: 26–29. Wiley, New York. Ishiyaku, M.F., 1997. Even in early flowering varieties, the flowering period can more depend on warm and moist conditions, leading to asynchronous maturity. Aitken, Y., 1974. The inheritance of time from sowing to flowering (f) in cowpeas was studied by crossing a photoperiod-sensitive genotype Kanannnado to a photoperiod-insensitive variety IT97D-941-1. Cowpea originated in Africa and is widely grown in Africa, Latin America, Southeast Asia and in the southern United States. 15–78. Pouteau, S., D. Nicholls, F. Tooke, E. Coen & N. Battey, 1997. Minchin, 1983. The mean DTM of test genotypes was 74 days. after flowering (FAO, 2012). Lawn, R.J. Summerfield, A. Qi, E.H. Roberts, P.M. Chay, J.B. Bouwer, J.L. Inheritance of flowering date in cowpeas [Vigna unguiculata (L.) Walp.]. IITA Publication. The parental lines differed significantly (P<0.05) in days to flowering, pod and grain yields. Allard, R.W., 1967. 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