Characterization and genetic variability analysis in Capsicum annuum L. germplasm

Abstract

Fifty three genotypes of Capsicum annuum L. collected from different parts of the West Bengal, India were characterized for 23 characters namely, stem colour, plant growth habit, branching habit, leaf size, leaf shape, leaf margin, leaf colour, leaf pubescence, pigment at node, flower per axil, corolla colour, anther colour, calyx margin, mature fruit colour at intermediate stage, fruit shape, fruit position, fruit adherence to the calyx, fruit shape at pedicel attachment, blossom end fruit shape, ascorbic acid content of the fruit, capsaicin in red fruit and colour value of the ripe fruit. These genotypes upon cataloguing showed distinct variations with respect to vegetative, inflorescence, fruit and quality characters. A wide range of variation was also observed among the genotypes for several morphological, fruit and quality characters. Among the different characters, white corolla colour showed 100 % frequency and higher frequency was also recorded in single flower per axil (86.79 %), number pigmentation at node (83.02 %) and green fruit colour (69.81%) at intermediate stage. Predominance of single descriptor state was found in more than 50 % genotypes for 15 characters. Based on the D2 value 53 genotypes were grouped into 17 clusters and results indicated that Cluster I and Cluster VII comprised with 29 and 9 genotypes respectively. Rest of clusters consisted of one genotype in each case. Variability studies revealed that there was a wide range of variability for all the characters studied. High heritability along with higher genetic advance (as a %age of mean) was found in capsaicin content in fruit, number of fruits per plant, yield per plant and primary branches per plant. These characters may be considered as reliable selection indices as they are possibly governed by additive gene effect. DOI: http://dx.doi.org/10.3329/sja.v11i1.18387 SAARC J. Agri., 11(1): 91-103 (2013)

Performance Evaluation and Variability Studies in F2 Progenies of Hot Pepper (Capsicum annuum L. annuum)

“…These results are in agreement with the findings of Shirshat et al, (2007), Bhojaraja Naik (2009), Chattopadhyay et al, (2011), Datta and Das (2013) and Pandit and Adhikary (2014).…”

Genetic variability and agronomic performance studies in chilli (Capsicum annum L.)

“…This suggested the scope for improvement of these characters through selection. High GCV and PCV for flowers per branch, clusters per plant, fruits per branch, stem diameter and fruits per plant were earlier reported by several workers (Dutta and Das, 2013). The values were especially high for flowers per branch, clusters per plant, fruits per plant and stem diameter.…”

Phylogenetic Analysis and Molecular Diversity of Capsicum Based on rDNA-ITS Region

“…In the C. annuum clade, dentate calyx margin was a trait distinct from the C. chinense and C. frutescens clades (Figure 3, Table S1). However, dentate calyx margin cannot be used as a characteristic trait because there were some lines in C. annuum that had smooth or intermediate calyx margin [49]. All C. frutescens accessions had erect flower position and growth habit, but these traits cannot distinguish C. frutescens from C. annuum and C. chinense (Figure 3, Table S1).…”