Genetic divergence in pepper genotypes from southwest Goiás

Abstract

Knowledge on the genetic diversity in genebanks is important for germplasm conservation and use in breeding programs, where it can reduce time and costs of breeding of new genotypes. The purpose of this study was to evaluate the genetic divergence among 137 genotypes of Capsicum chinense Jacq. by morphological descriptors and multivariate techniques, with a view to the identification of groups for promising crosses for breeding programs. The experiment was conducted in a greenhouse, arranged in a randomized complete block design with four replications, where each plot consisted of a pot with one plant. The 20 descriptors recommended by the International Plant Genetic Resources Institute - IPGRI were considered for the morphological characterization. By analysis of variance, significant differences between genotypes were detected for the studied descriptors. Clustering by the Tocher optimization method formed five groups, and by the hierarchical clustering method UPGMA, 11 groups. Based on larger distances intergroup, crosses are recommended among genotypes of the groups II x V, II x IV, and I x V for the Tocher method, and by UPGMA among genotypes of the groups VI x XI, II x XI, IV x XI,. The cophenetic correlation coefficient for the hierarchical clustering method UPGMA was 0.797 (p <0.01). The traits that contributed most to the total genetic diversity were number of days to flowering and plant height.

Biochar on Soil Chemical Properties and Beak Pepper (<i>Capsicun chinense</i>) Production

“…The beak pepper (Capsicun chinense), belonging to the Solanaceae family and to the genus Capsicum, originates in the Western Hemisphere, having a triangular shape with a very pointed tip, forming a pout, with approximately 2.5 to 2.8 cm in length and 1.5 cm wide, due to great diversity, in terms of colors, with a predominance of red coloring [14]. This pepper quickly gained national expression for presenting extremely tasty and aromatic fruits, characterized mainly by its sweet and pungent flavor [15].…”

Research Article Genetic diversity among 16 genotypes of Coffea arabica in the Brazilian cerrado.

“…The knowledge and study of the genetic divergence of a species tend to provide parameters that are of great value in the selection of parents that, when crossed, will allow greater heterotic effects in the progeny, increasing the chances of obtaining superior genotypes in segregating generations (Alvares et al, 2012).…”

Genetic Diversity of Brazilian Pepper Based on Qualitative Reproductive Traits

“…The same results were obtained by Bento et al (2007), which grouped 19 of the 28 analyzed chili pepperaccessions equally. Tocher and UPGMA methods were also partially coincident in the separation of 137 pepper genotypes from SouthwesternGoiás (Alvares et al, 2012).…”