N'zi Jean-Claude, Koné Issouf, M'bo Kacou Alban Antoine, Koné Siaka, Kouamé Christophe
World Agroforestry (ICRAF), 08 BP 2823, Abidjan 08, Côte d'Ivoire.
UPR de Génétique, UFR Biosciences, Université Félix Houphouët-Boigny, 22 BP 582 Abidjan 22, Côte d'Ivoire.
Heliyon. 2023 Jul 29;9(8):e18732. doi: 10.1016/j.heliyon.2023.e18732. eCollection 2023 Aug.
Côte d'Ivoire, the world's largest cocoa producer, faces numerous challenges because the yield of orchards is low due to several factors including the non-use of improved plant materials. This work is part of ICRAF's Vision for Change (V4C) project, which aimed at contributing to the regeneration of cocoa farms by making effective plant materials available to small cocoa producers. It essentially consisted in evaluating the effect of the age of the rootstock on the success of grafting to obtain a satisfactory quantity of improved plants in the nursery. The study was carried out in Adiopodoumé at the National Agronomic Research Center (CNRA). Ten elite cocoa clones from the "Vision for Change" project were used as scions. Top grafting was performed on seedlings of 2, 3- and 4-months used as rootstocks. The experimental design was a randomized complete block design with 3 replications. Data collection was focused on the grafting success rate and morphological parameters. The results showed that the grafting success rate is proportional to the rootstock age. Two months after grafting, the success rate was low. This indicates that grafting should eventually start at 3 months. This period could therefore represent a good stage to successfully graft and replant cocoa seedlings.
科特迪瓦是世界上最大的可可生产国，由于包括未使用改良种植材料在内的多种因素导致果园产量低下，该国面临诸多挑战。这项工作是国际热带农业中心（ICRAF）“变革愿景”（V4C）项目的一部分，该项目旨在通过向小型可可生产者提供有效的种植材料，为可可农场的再生做出贡献。其主要内容是评估砧木年龄对嫁接成功率的影响，以便在苗圃中获得数量可观的改良植株。该研究在阿迪奥波杜梅的国家农业研究中心（CNRA）开展。来自“变革愿景”项目的10个优良可可克隆品种用作接穗。将顶接嫁接到用作砧木的2个月、3个月和4个月大的幼苗上。试验设计为随机完全区组设计，重复3次。数据收集集中在嫁接成功率和形态参数上。结果表明，嫁接成功率与砧木年龄成正比。嫁接两个月后，成功率较低。这表明嫁接最终应从3个月大时开始。因此，这个时期可能是成功嫁接和重新种植可可幼苗的良好阶段。
