Abstract
Abstract: In the northern Minas region, the dry-warm climate predisposes coffee plants to the occurrence of leaf miners, mites, cercosporiosis, and leaf scald. Aiming for the development of a cultivar adapted to these conditions, Coffea canephora Pierre ex A. Froehner clones were selected through genetic parameters under an irrigated system, without agrochemicals. Eighteen agronomic traits were evaluated. The survival rate, number of nodes per plagiotropic branch, leaf miner infestation and cercosporiosis incidence were chosen as characteristics for selection of Vitoria Incaper 8142 , once they have shown superiority of the genetic parameters. The survival rate variable was used to rank the EMCAPA 8141 Robustao Capixaba clones. Clones V2, V4, V6, V13, RC7, and RC9 were selected as more tolerant to pests and diseases and can provide genetic improvements in conilon breeding program for region. The genetic dissimilarity identified between clones allowed suitable clone combinations to be proposed for use in future crosses.
Highlights
Coffee is one of the commodities most exchanged in international markets, with an annual world production of 158 million 60kg bags of coffee beans
The conilon coffee cultivation has been considered as an alternative to agriculture in the Northern Region of Minas Gerais, due to its characteristics of high productive potential, and large rusticity
Aiming to the development of a cultivar adapted to these conditions, we selected conilon clones according to genetic parameters for tolerance to pests and diseases under irrigated systems and without the use of pesticides
Summary
Coffee is one of the commodities most exchanged in international markets, with an annual world production of 158 million 60kg bags of coffee beans. The extensive use of pesticides in agricultural practices has been associated with human health problems and environmental contamination (Queiroz et al 2018) In this context, an expressed demand exists for technologies that should be implemented to improve crop sustainability, especially regarding the availability of cultivars tolerant to diseases and pests. The conilon coffee cultivation has been considered as an alternative to agriculture in the Northern Region of Minas Gerais, due to its characteristics of high productive potential, and large rusticity It has market potential, as a result of the growing world demand in blends with arabica coffee, soluble and espresso and other modern forms of consumption. Aiming to the development of a cultivar adapted to these conditions, we selected conilon clones according to genetic parameters for tolerance to pests and diseases under irrigated systems and without the use of pesticides
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