TY - JOUR
T1 - Flower bud thrips (Megalurothrips sjostedti Trybom) population diversity and sources of resistance among Benin cowpea germplasm
AU - Agbahoungba, Symphorien
AU - Datinon, Benjamin
AU - Billah, Maxwell
AU - Tossou, Hospice Tamegnon
AU - Agoyi, Eric Etchikinto
AU - Kpoviessi, Akovognon Dieudonne
AU - Assogbadjo, Achille Ephrem
AU - Sinsin, Brice
N1 - Publisher Copyright:
© 2021 Association of Applied Biologists.
PY - 2021/11
Y1 - 2021/11
N2 - Cowpea [Vigna unguiculata (L.) Walp.] is a main legume food cultivated for its leaves and grains in Benin. However, cowpea production is limited by insect pests with flower bud thrips being the most damaging and can cause up to 100% yield loss. Host plant resistance is the best strategy to control the pest. This study aimed to screen Benin cowpea germplasm for resistance to flower bud thrips. Forty-eight accessions were evaluated under greenhouse conditions with reared flower bud thrips. Data were collected on thrips damage (score = 1–9), larvae and adults thrips counts in flowers, on yield and yield components. Data were subjected to analysis of variance, Pearson correlation and multiple linear regression analyses. Results showed that two thrips species (Megalurothrips sjostedti and Sericothrips occipitalis) attacked cowpea with M. sjostedti being the most dominant. The different collected populations of M. sjostedti caused similar damage to cowpea. Significant differences were observed among accessions for thrips damage, for yield and yield components. The accessions IT07K-243-1-10, Nontchè-Wagbèhamin, Kplobè-Wewe, Kpegnikoun, Kpodjiguegue, Moussa, IT86D-888, Sanzibanili and Sèwé were highly resistant to flower bud thrips by presenting low thrips damage and very few thrips counts in flower while Tiligré, IT83S-742-2 and IT84S-2246-4 were tolerant to thrips by presenting low thrips damage despite the presence of many thrips counts in flowers. These accessions could serve as resistance sources in breeding programs on cowpea in Benin.
AB - Cowpea [Vigna unguiculata (L.) Walp.] is a main legume food cultivated for its leaves and grains in Benin. However, cowpea production is limited by insect pests with flower bud thrips being the most damaging and can cause up to 100% yield loss. Host plant resistance is the best strategy to control the pest. This study aimed to screen Benin cowpea germplasm for resistance to flower bud thrips. Forty-eight accessions were evaluated under greenhouse conditions with reared flower bud thrips. Data were collected on thrips damage (score = 1–9), larvae and adults thrips counts in flowers, on yield and yield components. Data were subjected to analysis of variance, Pearson correlation and multiple linear regression analyses. Results showed that two thrips species (Megalurothrips sjostedti and Sericothrips occipitalis) attacked cowpea with M. sjostedti being the most dominant. The different collected populations of M. sjostedti caused similar damage to cowpea. Significant differences were observed among accessions for thrips damage, for yield and yield components. The accessions IT07K-243-1-10, Nontchè-Wagbèhamin, Kplobè-Wewe, Kpegnikoun, Kpodjiguegue, Moussa, IT86D-888, Sanzibanili and Sèwé were highly resistant to flower bud thrips by presenting low thrips damage and very few thrips counts in flower while Tiligré, IT83S-742-2 and IT84S-2246-4 were tolerant to thrips by presenting low thrips damage despite the presence of many thrips counts in flowers. These accessions could serve as resistance sources in breeding programs on cowpea in Benin.
KW - Benin
KW - Megalurothrips sjostedti
KW - cowpea
KW - host plant resistance
KW - yield loss
UR - http://www.scopus.com/inward/record.url?scp=85110934767&partnerID=8YFLogxK
U2 - 10.1111/aab.12713
DO - 10.1111/aab.12713
M3 - Article
AN - SCOPUS:85110934767
SN - 0003-4746
VL - 179
SP - 395
EP - 404
JO - Annals of Applied Biology
JF - Annals of Applied Biology
IS - 3
ER -