Genetic diversity in Capsicum and Solanum genotypes based on morphoagronomic characters

Nascimento, Moysés; Araújo, Fernanda Ferreira de; Santos, Rusthon Magno Cortez dos; Finger, Fernando L.; Bruckner, Cláudio Horst

doi:10.5039/agraria.v16i4a1168

Cited by 1 publication

(1 citation statement)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the heritability of SD was only 68%, indicating low genetic variance for this trait, which can hinder the selection process due to the influence of the environment (Table 4). Heritability indicates how much of the genetic proportion of each individual can be transmitted to the next generation (Nascimento et al, 2021). The heritability of a trait is considered to be high when the parameter is equal to or greater than 70% (Cruz;Regazzi;Carneiro, 2012).…”

Section: Quantitative Characteristics Of Fruits and Seedsmentioning

confidence: 99%

The role of the genetic diversity of Capsicum spp. in the conservation of the species: Qualitative and quantitative characterization

et al. 2023

View full text Add to dashboard Cite

Peppers need to be characterized for the in situ conservation of species that might be important for breeding purposes. In this study, we characterized the diversity of 23 pepper genotypes through eight qualitative and 12 quantitative descriptors. The pepper samples were collected from the city of Manaus and in the municipalities of Rio Preto da Eva and Iranduba in the state of Amazonas. We performed descriptive analysis, analysis of variance, Pearson’s correlation analysis, and principal component analysis (PCA) and used the unweighted pair group method with arithmetic mean (UPGMA) to analyze the data. The differences between the genotypes for all descriptors evaluated were significant. Among the genotypes collected, four pepper species were identified, including Capsicum chinense (14 genotypes), Capsicum frutescens (two genotypes), Capsicum baccatum (one genotype), and Capsicum annuum (four genotypes), and two other genotypes were obtained with unidentified species. The PCA and UPGMA clustering methods could be used to efficiently differentiate between the genotypes by applying quantitative and qualitative descriptors of fruits and seeds. These methods helped to identify different genotypes (G1 and G15) and separate them into distinct groups associated with the distribution of species based on quantitative data only. Overall, our findings suggested that the genetic variability in Capsicum available in the State of Amazonas might be useful in breeding programs.

show abstract