Cowpea

Boukar, Ousmane; Bhattacharjee, Ranjana; Fatokun, Christian; Kumar, Pawan; Guèye, Badara

doi:10.1016/b978-0-12-397935-3.00006-2

Cited by 26 publications

(14 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This contradicted Omo-Ikerodah et al (2009) findings where reciprocal differences were important in conditioning resistance to flower thrips among cowpea genotypes. However, the occurrence of significant reciprocal by location interaction effects (Table 5) between the reciprocal families indicated that the expression of the cytoplasmic factors on thrips damage scores depended on the environmental factors as well as in the case of the nuclear genes (Boukar et al, 2013;Bett et al, 2017;Oladejo et al, 2017). Consequently, the use of the resistant genotype as female parent could confer superior resistance on the F2s in different locations.…”

Section: Discussionmentioning

confidence: 99%

Inheritance of cowpea resistance to flower thrips in Uganda germplasm

Agbahoungba¹,

Karungi²,

Badji³

et al. 2018

J. Plant Breed. Crop Sci.

View full text Add to dashboard Cite

Flower thrips [Megalurothrips sjostedti (Trybom)] is the most damaging insect pest on cowpea. However, information regarding the nature of gene action governing the inheritance of resistance to thrips is not available for cowpea genotypes in Uganda. This study was carried out to determine the inheritance pattern of cowpea resistance to flower thrips. Five resistant cowpea genotypes and three susceptible genotypes were crossed in full diallel mating design. F2 progenies were evaluated along with the parents in alpha lattice design with two replications under natural thrips infestation at Kabanyolo, Arua and Serere in Uganda. Combining ability analysis was performed using method one and model one of diallel analysis. The results showed that the environmental effects were highly significant (P<0.001). Additive, dominance and epistasis effects had major contributions. The broad sense heritability varied from 18 to 42% for thrips damage scores and from 0 to 6% for thrips counts. The estimates of narrow sense heritability were low for thrips damage score (2 to 18%) and thrips counts (0 to 9%). Genotypes TVU-1471 and TVU-1509 were identified as good transmitters of resistance to flower thrips. Crosses TVU-1509 x NE5, TVU-473 x Sanzi, TVU-123 x Sanzi, TVU-123 x TVU-473, and TVU-473 x TVU-1509 presented significant (P<0.05) and negative SCA effects for thrips damage scores and thrips counts and would be the most useful in breeding as some of their progenies would have high resistance to flower thrips. This study provides the basis of an efficient breeding program of cowpea for flower thrips resistance.

show abstract

Section: Discussionmentioning

confidence: 99%

Inheritance of cowpea resistance to flower thrips in Uganda germplasm

Agbahoungba¹,

Karungi²,

Badji³

et al. 2018

J. Plant Breed. Crop Sci.

View full text Add to dashboard Cite

show abstract

“…spontanea (formerly var. dekindtiana) is believed to be the progenitor of cowpea and it has been found in all low lying areas of Sub Saharan Africa (SSA) (Boukar, 2013). Padulosi and Ng (1997) reported Southern Africa as centre of origin for wild cowpea.…”

Section: Introductionmentioning

confidence: 99%

Cowpea genetic resources and its utilization: Indian perspective – A review

Tripathi

Gore

Ahlawat

et al. 2019

View full text Add to dashboard Cite

Cowpea is a multipurpose food legume of the tropics and is a crucial source of nutrition for rural and tribal communities in Africa and Asia. High protein content, nitrogen-fixing ability, drought tolerance and adaptability to challenging environment make cowpea, a promising climate resilient food legume of 21st century. This crop is grown as sole or mix-crop and in agro-forestry combinations for diverse uses as pulse, vegetable and fodder. Although cowpea has been used by indigenous people for centuries, its full potential has never been realized. Its production did not increase over the years due to narrow genetic base, biotic and abiotic stresses and non-adaptation to changing climate. Ultimate solution lies in its genetic resource which are the reservoir of useful genes. Lack of information on germplasm characterization and evaluation restricts the effective use of germplasm stored in the genebanks. Introgression of genes from closely related Vigna species and application of modern molecular tools may facilitate broadening the genetic base of cowpea.

show abstract

“…In Africa, cowpea is part of the traditional cropping systems and it is considered as a strategic crop because of its multiple uses as human food, animal feed, source of nitrogen for soil restoration and income for resource‐poor farmers as well as small‐scale processors (Abtew et al, ; Boukar, Fatokun, Huynh, Roberts, & Close, ; Isubikalu, Erbaugh, Semana, & Adipala, ). Cowpea grains represent a major source of protein (20%–32%), minerals and vitamins in the diet of majority of rural and semi‐urban communities (Boukar, Bhattacharjee, Fatokun, Kumar, & Gueye, ; Egho, ; Palanga et al, ; Singh, ). The tender leaves, soft stems and green pods are also eaten as vegetables in Asian and East African communities (Abudulai, Salifu, & Haruna, ).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of cowpea mini core accessions for resistance to flower bud thrips Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae)

Togola

Boukar

Chamarthi

et al. 2019

J Applied Entomology

Self Cite

View full text Add to dashboard Cite

The flower bud thrips, Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae), is an economically important pest of cowpea in sub‐Saharan Africa. Varietal resistance is the most preferred, environmentally friendly, cost‐effective and sustainable option for controlling this pest. The objective of this study was to identify sources of resistance to M. sjostedti among mini core accessions from the largest world cowpea germplasm collection maintained at the International Institute of Tropical Agriculture (IITA). The study was conducted during the 2015 and 2016 cropping seasons where 365 accessions were screened under field conditions. Each accession was rated visually for thrips damage score, flower abortion rate, number of pods per plant and number of thrips per flower. The resistance levels observed in genotypes TVu8631, TVu16368, TVu8671 and TVu7325 were similar to that of the resistant check “Sanzisabinli” (called Sanzi) during both seasons. In addition, 56 mini core genotypes showed moderate resistance to thrips damage. High heritability values were associated with thrips damage scores at 65 days after planting (0.60), percentage of effective peduncles (0.59), flower bud abortion rate (0.59), number of pods per plant (0.51) and number of peduncles with pods (0.5). The accessions identified with good levels of resistance to flower bud thrips will be used in cowpea breeding programs to develop improved resistant varieties.

show abstract

Cowpea

Cited by 26 publications

References 66 publications

Inheritance of cowpea resistance to flower thrips in Uganda germplasm

Inheritance of cowpea resistance to flower thrips in Uganda germplasm

Cowpea genetic resources and its utilization: Indian perspective – A review

Evaluation of cowpea mini core accessions for resistance to flower bud thrips Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae)

Contact Info

Product

Resources

About