Keywords:
Bast fibre crop, Genetic parameters, Multivariate analysis, Variability
Assessment of genetic diversity within the advanced breeding population helps in parents’ diversification and identification of trait-specific genotype. In the present study, an intraspecific hybrid breeding involving five crosses, HS-7910 × AMV-4, GR-27 × JRR-07, AMV-5 × GR-27, GR-27 × HS-7910 and AHS-160 × NONBRIS-4 followed by pedigree selection, resulted in isolation of 75 advance breeding lines. These lines along with two commercial varieties were evaluated for fibre yield and associated traits. A significant genetic diversity was observed among the lines, distributed in 3 broad clusters. Of these, cluster I was the biggest with 38 genotypes trailed by cluster III with 36 genotypes and cluster II harboring only three genotypes. Plant height and green biomass yield are the two traits contributing maximum to the total divergence. Promising roselle genotypes were identified for each trait can be successfully utilized in future breeding program for the development of high fibre yielding cultivar.
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Authors are thankful to Director ICAR-CRIJAF and Head, Crop Improvement Division for providing resources and facilities for conducting the experiment.