Genetic divergence and seed vigour studies in fennel (Foeniculum vulgare Mill.)
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Date
2018
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CCSHAU
Abstract
The present investigation “Genetic divergence and seed vigour studies in fennel (Foeniculum vulgare Mill.)” evaluated that 50 genotypes of fennel to determine divergence for yield and its components traits. All the genotypes were also studied to know the seed vigour assessment. The study revealed that mean sum of squares due to genotypes was significant for all the quantitative characters indicating the presence of based on sufficient amount of variation. The analysis based on Mahalnobis D2 statistics the genotypes were grouped in to VIII clusters. Cluster I was having highest number of genotypes and it was followed by clusters IV, III and VI. Based on Tocher‟s method genotypes were grouped into VIII distinct clusters. The distances were significant difference which helps for maximum genetic segregation and genetic recombination for crosses as well as obtaining heterotic response in breeding program for improving yield and its related traits. The analysis of genotypic as well as phenotypic correlations revealed that, the seed yield had positive correlation with plant height, primary branches per plant, secondary branches per plant, umbels per plant, umbellates per umbel, seeds per umbellate, seeds per umbel, seed yield, harvest index, test weight, except days to 50% flowering. Thus selection for these traits should be worked to enhance the yield. Path coefficient analysis revealed high positive direct effect of seed yield per plant, umbels per plant, test weight, seeds per umbel, seeds per umbellate, umbellates per umbel, biological yield per plant and harvest index on seed yield. Therefore simultaneous selection for these traits is suggested for improvement of seed yield in fennel. Maximum vigour potential was shown by HF-171, genotype that showed superiority for almost all vigour parameters. Standard germination, vigour indices and accelerated ageing test were found to be the most suitable predictions for field establishment in fennel.
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