Germplasm A and B Genomic Composition Differentially Affects Their Susceptibility to Banana Bunchy Top Virus and Its Aphid Vector, .
Sergine Ngatat, Rachid Hanna, Jules Lienou, Richard T Ghogomu, Sidonie Prisca K Nguidang, Aime C Enoh, Bertrand Ndemba, Sam Korie, Apollin Fotso Kuate, Samuel Nanga Nanga, Komi K M Fiaboe, P Lava Kumar
Author Information
Sergine Ngatat: International Institute of Tropical Agriculture (IITA), Messa-Yaound�� P.O. Box 2008, Cameroon.
Rachid Hanna: International Institute of Tropical Agriculture (IITA), Messa-Yaound�� P.O. Box 2008, Cameroon. ORCID
Jules Lienou: International Institute of Tropical Agriculture (IITA), Messa-Yaound�� P.O. Box 2008, Cameroon.
Richard T Ghogomu: Department of Plant Protection, University of Dschang, Dschang P.O. Box 96, Cameroon.
Sidonie Prisca K Nguidang: International Institute of Tropical Agriculture (IITA), Messa-Yaound�� P.O. Box 2008, Cameroon.
Aime C Enoh: International Institute of Tropical Agriculture (IITA), Messa-Yaound�� P.O. Box 2008, Cameroon. ORCID
Bertrand Ndemba: National Program of Fruit Crops (NPFC), Ministry of Agriculture and Rural Development (MINADER), Yaound�� P.O. Box 57, Cameroon.
Sam Korie: IITA, PMB 5320 Oyo Road, Ibadan 200285, Nigeria.
Apollin Fotso Kuate: International Institute of Tropical Agriculture (IITA), Messa-Yaound�� P.O. Box 2008, Cameroon. ORCID
Samuel Nanga Nanga: International Institute of Tropical Agriculture (IITA), Messa-Yaound�� P.O. Box 2008, Cameroon. ORCID
Komi K M Fiaboe: International Institute of Tropical Agriculture (IITA), Messa-Yaound�� P.O. Box 2008, Cameroon. ORCID
P Lava Kumar: IITA, PMB 5320 Oyo Road, Ibadan 200285, Nigeria. ORCID
Banana bunchy top disease (BBTD), caused by the banana bunchy top virus (BBTV, genus ), is the most destructive viral disease of banana and plantain ( spp.). The virus is transmitted persistently by the banana aphid, Coquerel (Hemiptera: Aphididae). While research efforts have focused on screening genotypes for BBTD resistance, comparatively little work has been carried out to identify resistance to banana aphids. This study assessed 44 germplasm of different A and B genome composition for the performance of banana aphids under semicontrolled environmental screenhouse conditions and in a field trial established in a BBTD endemic location. In the screenhouse, the AA diploid Calcutta 4 had the lowest apterous aphid density per plant (9.7 �� 4.6) compared with AAB triploid Waema, which had the highest aphid densities (395.6 �� 20.8). In the field, the highest apterous aphid density per plant (29.2 �� 6.7) occurred on the AAB triploid Batard and the lowest (0.4 �� 0.2) on the AA diploid Pisang Tongat. The AA diploid Tapo was highly susceptible to BBTD (100% infection) compared with the genotypes Balonkawe (ABB), PITA 21 (AAB), Calcutta 4 (AA), and Balbisiana Los Banos (BB), which remained uninfected. The genotypes with apparent resistance to BBTD and least susceptibility to aphid population growth provide options for considering aphid and BBTD resistance in banana and plantain breeding programs.
