Selection of coffee progenies for resistance to nematode Meloidogyne paranaensis in infested area

Abstract

The purpose of this study was to select Coffea arabica progenies for resistance to M. paranaensis in an infested coffee growing area using Henderson's mixed model methodology. Forty-one genotypes were selected at the Coffee Active Germplasm Bank of Minas Gerais, and evaluated in regard to stem diameter, number of plagiotropic branches, reaction to the nematode, and yield per plant. There was genetic variability among the genotypes studied for all the traits evaluated, and among the populations studied for yield and reaction to the nematode, indicating possibilities for obtaining genetic gains through selection in this population. There was high rate of genotypic association between all the traits studied. Coffee plants of Timor Hybrid UFV408-01 population, and F3 progenies derived from crossing Catuaí Vermelho and Amphillo MR 2161 were the most promising in the area infested by M. paranaensis.

IPR 100 - Rustic dwarf Arabica coffee cultivar with resistance to nematodes Meloidogyne paranaensis and M. incognita

“…Besides, 'IPR 100' presents good agronomic performance in comparison with susceptible controls Catuaí IAC 64 and Mundo Novo IAC 379/19 in areas infested with M. paranaensis in the state of Minas Gerais, Brazil (Salgado et al 2014).…”

Characterization of resistance response of Coffea canephora genotypes to Meloiddogyne incognita (Est I2) root-knot nematode

“…In coffee fields, the damage caused by Meloidogyne spp. vary according to the species, the population density and the susceptibility of the host cultivar (SALGADO et al, 2014;SILVA et al, 2007).…”

Large-scale, high-efficiency production of coffee somatic embryos

“…The vegetative propagation of coffee (Coffea arabica L.) via somatic embryogenesis facilitates the rapid evaluation of F1 hybrids and segregating genotypes in genetic breeding programs, allowing clonal varieties to be developed in only 10 years (Caixeta et al 2008, Salgado et al 2014. Large-scale multiplication via somatic embryogenesis has been used for the dissemination of F1 hybrids with high levels of heterosis in Central America ) and is becoming a reality in Mexico (Etienne et al 2013) and Brazil (Carvalho et al 2013), in part due to advances in the use of temporary immersion bioreactors for the production of pregerminated embryos (Ducos et al 2007b).…”