Ngatat Sergine, Hanna Rachid, Lienou Jules, Ghogomu Richard T, Nguidang Sidonie Prisca K, Enoh Aime C, Ndemba Bertrand, Korie Sam, Fotso Kuate Apollin, Nanga Nanga Samuel, Fiaboe Komi K M, Kumar P Lava
International Institute of Tropical Agriculture (IITA), Messa-Yaoundé P.O. Box 2008, Cameroon.
Department of Plant Protection, University of Dschang, Dschang P.O. Box 96, Cameroon.
Plants (Basel). 2022 Apr 29;11(9):1206. doi: 10.3390/plants11091206.
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.
香蕉束顶病（BBTD）由香蕉束顶病毒（BBTV， 属）引起，是香蕉和大蕉（ 属）最具毁灭性的病毒病。该病毒通过香蕉蚜， 科克雷尔（半翅目：蚜科）持久传播。虽然研究工作主要集中在筛选对BBTD具有抗性的基因型，但在鉴定对香蕉蚜的抗性方面开展的工作相对较少。本研究在半控制环境的温室条件下以及在一个BBTD流行地区建立的田间试验中，评估了44份不同A和B基因组组成的 种质对香蕉蚜的抗性表现。在温室中，AA二倍体加尔各答4号每株无翅蚜密度最低（9.7±4.6），而AAB三倍体韦马的蚜密度最高（395.6±20.8）。在田间，AAB三倍体巴塔尔德每株无翅蚜密度最高（29.2±6.7），而AA二倍体贡蕉每株无翅蚜密度最低（0.4±0.2）。与未感染的基因型巴隆卡韦（ABB）、皮塔21（AAB）、加尔各答4号（AA）和洛斯巴尼奥斯的野蕉（BB）相比，AA二倍体塔波对BBTD高度敏感（100%感染）。对BBTD具有明显抗性且对蚜虫种群增长最不敏感的基因型，为香蕉和大蕉育种计划中考虑蚜虫和BBTD抗性提供了选择。
