Grain Legumes of the Lowland Tropics

Rachie, K. O.; Roberts, Lewis M.

doi:10.1016/s0065-2113(08)60869-x

Cited by 156 publications

(79 citation statements)

References 125 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Taking together, it therefore possible to breed cowpeas that combine large seed size with high yield, although seed size recorded negative correlations with seeds per pods but not with seeds per plants (Ogunbodede 1989; Table 3 this data). Rachie and Roberts (1974) and Drabo et al (1985) reported similar negative correlations between seed size and seeds per pod. While large seeds could be constrained by seed per pods (negative correlation), improvement for combining high yield and large seed could be achieved through breeding for increased number of pods per plant.…”

Section: Discussionmentioning

confidence: 57%

Phenotypic Analysis of Seed Yield and Yield Components in Cowpea (Vigna unguiculata L., Walp)

Aliyu¹,

Makinde²

2016

Plant Breed. Biotech.

View full text Add to dashboard Cite

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. ABSTRACT Poor seed yield remains a great challenge for cowpea production in sub-Sahara Africa and continuous evaluation of available genetic resource to develop high and stable yielding varieties is the panacea to this regional food security conundrum. In this study, 21 cowpea breeding lines were evaluated for phenotypic analysis of seed yield components for two years in a randomized complete block design of 3 replications. All the yield components exhibited significant genotypic variation, while flowering, pod maturity and seed yield traits recorded significant variation for years and its interactions. These cowpeas, which are predominantly early-medium maturing biotypes, exhibited relative phenotypic stability for the yield components across years (seasons) except seed yield, being a final product of complex physiological process. Relationships between flowering/pod maturity and seed size were positive and significant. By contrast, pods/plant, seeds/plant and total seed yield recorded negative correlations with pod maturity. However, seeds/plant and pods/plant are the most contributory components to seed-yield with correlation coefficients of r=0.95, 0.89, respectively. Although seed size had negative correlation with seeds/pod, but strong linkage between seed number (seeds/pod, seeds/plant) and seed yield; and additive gene nature of seed size, suggest a weak size-number trade-off in cowpea. Genetic variance components indicates high genetic contributions over non-genetic to plant phenotypic variability with high heritability values (0.75-0.91). Six cowpea lines (IT10K-837-1, IT07K-299-6, IT10K-815-5, IT10K-817-7, IT08K-150-24, and IT11K-61-82) with multiple quality yield traits could be selected for immediate farmers use and future genetic improvement.

show abstract

Section: Discussionmentioning

confidence: 57%

Phenotypic Analysis of Seed Yield and Yield Components in Cowpea (Vigna unguiculata L., Walp)

Aliyu¹,

Makinde²

2016

Plant Breed. Biotech.

View full text Add to dashboard Cite

show abstract

“…Canapu was the only cultivar that presented differences in root:hypocotyl ratio, at 10mol m -3 NaCl, comparing to controls (Table 5). Cowpea has been reported to have a good tolerance to heat, drought and salt stress (Rachie & Roberts, 1974;West & Francoise, 1982;Maas, 1986;Maas & Poss, 1989), responding positively to irrigation but will also produce well under dryland conditions (Davis et al, 2003). Drought resistance is one reason that cowpea is such an important crop in northeastern region of Brazil along with, many other underdeveloped parts of the world (Queiroz et al, 2004).…”

Section: Resultsmentioning

confidence: 99%

Physiological response of cowpea seeds to salinity stress

Dantas

Ribeiro

Aragão

2005

Rev. bras. sementes

View full text Add to dashboard Cite

ABSTRACT-This work aimed to evoluate physiological response of cowpea (Vigna unguiculata L. Walp) seeds submitted to salt stress. Seeds of cultivars 'Epace-10'; 'Canapu' and 'Pitiúba' of cowpea, were submitted to germination test in germinator at 25 0 C, in "germitest" papers imbibed in distilled water or in 0, 10, 50, 100 and 200mol m -3 NaCl solutions. At the first and second counting of the germination test, normal seedlings were accounted, weighted and dried, obtaining data for vigor, total germination, fresh matter weight and dry matter weight. The seedlings hypocotyls, root and total length were measured total proteins content in cotyledons were obtained from germinating seeds. The presence of salt at concentrations higher than 50mol m -3 NaCl affect the germination, seedlings growth and cotyledons total protein synthesis of all cowpea cultivars. The seeds of cultivar pitiúba were is more tolerant to salinity, than the cultivars Canapu and Epace-10. . Na primeira e segunda contagem do teste de germinação, as plântulas normais foram contadas, pesadas e secadas, obtendo-se dados de vigor, germinação, massa de matéria fresca e massa de matéria seca. O comprimento do hipocótilo, raiz e total foram medidos e o teor de proteínas totais nos cotilédones foi obtido em plântulas de 3, 5 e 8 dias. As concentrações de NaCl acima da 50mol m -3 afetam a germinação e o vigor das sementes, crescimento de plântulas, bem como a síntese de proteínas totais. As sementes da cultivar Pitiúba são mais tolerantes à salinidade do que as cultivares Canapu e Epace-10.Termos para indexação: Vigna unguiculata, cloreto de sódio, germinação,vigor.

show abstract

“…Pulses are important legume crops which are generally grown without fertilizer since they can meet their nitrogen requirement by symbiotic fixation of atmospheric nitrogen in the soil (Islam, 1991;Zapata et al, 1987;Fried and Middleboe, 1977). Nevertheless, pulses supply a substantial amount of nitrogen to the succeeding nonlegume crops grown in rice based cropping system (Rachie and Roberts, 1974;Ahlawat et al, 1981;Kurtz et al, 1984;Sharma and Prasad, 1999). Potential adoption of mustard, mungbean and potato in T.aman-Fallow-Boro-Fallow cropping system would generate employment and additional income for the rural poor and producing more of these crops utilizing fallow and under utilize lands in the country.…”

Section: Introductionmentioning

confidence: 99%

Crop sequences for increasing cropping intensity and productivity

et al. 2015

View full text Add to dashboard Cite

Field experiments were conducted at the Central Research Station of Bangladesh Agricultural Research Institute (BARI) for three consecutive years (2011-12, 2012-13 and 2013-14) to study the comparative agronomic performance and economic return of different cropping sequences for increasing cropping intensity and productivity. Three cropping patterns (CP1 - Transplanted Aman rice (var:Binadhan-7) Mustard (var:BARISarisha-14) Boro rice (var:BRRIdhan-28) Transplanted Aus rice (var:Parija), CP2 - T. aman rice Potato (var:Diamont) Boro rice T. aus rice and CP3 - T. aman rice Mustard (var:BARISarisha-15) Mungbean (var:BARIMung-6) T. aus rice) are based on four crops; and one cropping pattern (CP4 = T. aman rice Fallow Boro rice Fallow) with two rice crops as control were tested. Four crops can be grown successfully one after another in sequence in all the three cropping patterns tested. On an average organic matter 3.56, 4.70, 3.58 and 2 t ha-1 were added to soil in CP1, CP2, CP3 and CP4 by incorporation of biomass of respective crops. The highest rice equivalent yield (REY) 34.10, 34.02 and 33.36 t ha-1 was obtained from the cropping pattern CP2 in 2011-12, 2012-13 and 2013-14, respectively and it was followed by CP1 and CP3. The highest average gross return (Tk.5,00,469 ha-1) and net return (Tk. 2,63,773 ha-1) were obtained from CP2 and it was followed by CP3 but the highest average B:C ratio (2.89) was obtained from the cropping pattern CP3 followed by CP2 (2.11) due to lower cost of production than in the former one. Four crops based patterns can be recommended for higher productivity, soil enrichment & economic benefit besides creating more employment opportunity.SAARC J. Agri., 13(1): 135-147 (2015)

show abstract

Grain Legumes of the Lowland Tropics

Cited by 156 publications

References 125 publications

Phenotypic Analysis of Seed Yield and Yield Components in Cowpea (Vigna unguiculata L., Walp)

Phenotypic Analysis of Seed Yield and Yield Components in Cowpea (Vigna unguiculata L., Walp)

Physiological response of cowpea seeds to salinity stress

Crop sequences for increasing cropping intensity and productivity

Contact Info

Product

Resources

About