Genetic progress with selection of Coffea canephora clones of superior processed coffee yield

Abstract

The aim of this study was to select Coffea canephora clones of superior processed coffee productivity based on the estimates of the genetic parameters and of genetic progress with the plant selection. For this, the production of processed coffee from 130 clones was evaluated from 2014 to 2016 in a clonal test, installed in randomized complete blocks with four plants per plot and six replications, spaced 3 × 2m at the experiment station Embrapa Rondônia in the municipality of Ouro Preto do Oeste - RO. The estimation of genetic parameters and prediction of genotypic values were performed using REML/BLUP procedure (Restricted Maximum Likelihood/Best Unbiased Linear Prediction). Estimates of the genetic parameters confirmed the predominance of the genetic component in the expression of this trait, indicating the possibility of obtaining gains with the plant selection. Genetic progress of processed coffee productivity from the selection of 10% of the best clones was 49.88%, which is equivalent to an increase in average productivity from 42.57 bags.ha-1 to 66.95 bags.ha-1. The use of the harmonic mean of the genetic values helped to identify the clones of superior performance, with higher adaptability and stability for the northern region of Brazil.

Adaptability and stability of Coffea canephora Pierre ex Froehner genotypes in the Western Amazon

“…In the same state, FERRÃO et al (2008) also reported estimates higher than 0.8. RAMALHO et al (2016), SILVA et al (2018), and TEIXEIRA et al (2017 observed heritability values of 0.94, 0.84, and 0.79, respectively, in experiments conducted in the state of Rondônia.…”

Environmental stratification and performance of Coffea canephora clones grown in the Western Amazon

“…Heritability estimates ranging from 0.80 to 0.90 realized in this study were also observed by Resende et al (2001) in evaluation of Coffea arabica cultivars in the Southeast region of Brazil. Ferrão et al (2008), Ramalho et al (2016), andSilva et al (2018) also observed heritability estimates for yield higher than 0.80 in evaluation of C. canephora genotypes in the states of Espírito Santo and Rondônia in Brazil. In field trials evaluated in Ghana, Akpertey, Anim-Kwapong and Ofori (2018) observed that heritability estimates are higher at early years of production.…”

Yield, maturation cycle, and estimates of genetic parameters of Robusta coffee genotypes under irrigation in the Cerrado

“…From the harvest data of the 2011/12, 2012/13, and 2013/14 crop years, 85 materials were selected with minimum production of seven liters per plant in each of the three years and production variation lower than 25%. According to Silva et al (2018), lower biannual variation is as important as yield potential for the selection of clones with higher yield stability that maintain their superiority overtime.…”