Trait selection using procrustes analysis for the study of genetic diversity in Conilon coffee

Abstract

Trait selection is occasionally necessary to save money and time, as well as accelerate breeding program processes. This study aimed to propose two criteria to select traits based on a Procrustes analysis that are poorly explored in genetic breeding: Criterion 1 (backward algorithm) and Criterion 2 (exhaustive algorithm). Then, these two criteria were further compared with Jolliffe’s criterion, which has often been used to select traits in genetic diversity studies. Sixteen agronomic traits were considered, and 40 Conilon coffee (Coffea canephora) accessions were evaluated. This study showed that the flexibility in selecting traits by researcher preference, graphical visualization, and Procrustes statistic through criteria 1 and 2 is a fast and reliable alternative for decision-making. These decisions are based on the removal and addition of traits for phenotyping in studies of Conilon coffee diversity that can be applied to other crops. Other relevant aspects of selection traits criteria were also discussed.

Genetic and Genomic Characterization of a New Beef Cattle Composite Breed (Purunã) Developed for Production in Pasture-Based Systems

“…Genetic diversity studies are crucial in the initial phase, called pre-breeding, in which it is possible to regenerate, characterize, explore, and promote the conservation of variability of the population ( Pontes et al, 2020 ). The parameters estimated include inbreeding coefficients of the individual animals, the genetic relationship between animals, and overall levels of homozygous and heterozygous regions in the genome as well as their distribution along the chromosomes ( Biscarini et al, 2020 ).…”

Genetic variability of conilon coffee population from cultivar ‘ES8152’ based on morphoagronomic variables

“…Thus, reproduction by seeds results in a highly diverse population, in which each plant may differ from the others in terms of architecture, shape and size of grains and leaves, maturation pattern and susceptibility to biotic and abiotic stresses (Dubberstein et al, 2020). The genetic diversity existing among and within populations can be measured by the difference among the phenotypic values of their accessions and is obtained in field experiments using Coffee Science, 17:e171986, 2022 a considerable number of morphological, agronomic and other characteristics (Pontes et al, 2020).…”

Table2.XLSX

“…Genetic diversity studies are crucial in the initial phase, called prebreeding, in which it is possible to regenerate, characterize, explore, and promote the conservation of variability of the population (Pontes et al, 2020). The parameters estimated include inbreeding coefficients of the individual animals, the genetic relationship between animals, and overall levels of homozygous and heterozygous regions in the genome as well as their distribution along the chromosomes (Biscarini et al, 2020).…”