Barbosa D H G S, Rodrigues W P, Vieira H D, Partelli F L, Viana A P
Embrapa Mandioca e Fruticultura, Núcleo de Recursos Genéticos e Desenvolvimento de Variedades, Cruz das Almas, BA, Brasil.
Centro de Ciências e Tecnologias Agropecuárias, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, Brasil
Genet Mol Res. 2014 Sep 26;13(3):7879-88. doi: 10.4238/2014.September.26.26.
In view of the predicted models of global climate change and differences in prices and production costs, there is increased interest in Coffea canephora cultivation in areas of high altitude. However, this species is sensitive to low temperatures, where genotypes vary regarding adaptation/tolerance mechanisms, demonstrating genotype x environment interaction. The aim of this study was to evaluate the stability and adaptability of C. canephora varieties in high-altitude areas. The experiments were carried out in February 2004, in Bom Jesus do Itabapoana, Rio de Janeiro State, Brazil, at an altitude of 725 m. Four clonal varieties (EMCAPA 8111, EMCAPA 8121, EMCAPA 8131, and EMCAPA 8151) and five harvests (2006 to 2010) were used. The experimental design was randomized blocks with four treatments and six plots, with 12 plants in each plot and spaced 2.5 x 1.2 m. Adaptability and stability parameters were determined using methods based on nonparametric analysis and analysis of variance. The results showed that the EMCAPA 8131 had the best performance according to stability and adaptability parameters and may be promising for high-altitude regions.
鉴于全球气候变化的预测模型以及价格和生产成本的差异，人们对在高海拔地区种植卡内弗拉咖啡的兴趣日益浓厚。然而，该物种对低温敏感，其基因型在适应/耐受机制方面存在差异，表现出基因型与环境的相互作用。本研究的目的是评估卡内弗拉咖啡品种在高海拔地区的稳定性和适应性。实验于2004年2月在巴西里约热内卢州伊塔巴波阿纳的博姆热苏斯进行，海拔725米。使用了四个克隆品种（EMCAPA 8111、EMCAPA 8121、EMCAPA 8131和EMCAPA 8151）以及五个收获期（2006年至2010年）。实验设计为随机区组，有四个处理和六个小区，每个小区有12株植株，间距为2.5×1.2米。使用基于非参数分析和方差分析的方法确定适应性和稳定性参数。结果表明，根据稳定性和适应性参数，EMCAPA 8131表现最佳，可能在高海拔地区具有潜力。
