Assessment of genetic parameters of fenugreek (Trigonella foenum-graecum L.) through morphological andtraceutical traits
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Date
2019-08
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
The present investigation was conducted at Pantnagar Centre for Plant Genetic Resources (PCPGR) of the G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand during Rabi season of the year 2016-17 and 2017-18. The experimental material comprised of thirty seven genotypes of fenugreek including one check variety (Pusa Early Bunching). The accessions were evaluated in Randomized Block Design to study the genetic parameters through morphological and nutraceutical traits. Observations were recorded for 16 quantitative traits viz., number of primary branches per plant, number of leaves per plant at 30, 45 &60 days after sowing, plant height, days to first flowering, node of first flowering, days to 50 % flowering, days to seed maturity, number of pods/plant, pod length, pod width, number of seeds/pod, 1000-seed weight, green leaf yield/plant and seed yield/plant as well as for 9 nutraceutical traits viz., phosphorus, potassium, iron, copper, manganese, zinc, ash, protein and diosgenin content. Analysis of variance revealed significant differences among genotypes for all traits. The estimates of PCV were found higher than the corresponding GCV for all traits. The genotypes namely, PCPGR-GP-2011-572, PFG-9, PCPGR-5984 and PFG-42 found promising genotypes for seed yield per plant while PCPGR-GP-2011-248 and PCPGR-5984 found desirable for green leaf yield per plant. Among nutraceutical traits, for phosphorus content PCPGR-GP-2011-196, for potassium content PCPGR-GP-2011-158, for iron content PFG-16, for copper and manganese content PFG-18, for zinc content PCPGR-7928, for ash content PCPGR-GP-2011-285, for protein content PCPGR-7368 and for diosgenin content PCPGR-GP-2011-248 found best genotypes. High heritability coupled with0high genetic advance as per cent of mean was recorded for primary branches/plant, number of leaves /plant at 30, 45 & 60 DAS, plant height, node of first flowering, number of pods/plant, 1000-seed weight, leaf yield/plant, seed yield/plant, potassium, iron, copper, manganese, zinc, ash, protein and diosgenin content. Number of pods/plant, 1000-seed weight, green leaf yield/plant, pod width and plant height showed highly significant positive correlation as well as positive direct effect on seed yield/plant. Genetic diversity analysis using D2 statistics classified 37 genotypes into nine clusters. The traits like, number of pods/plant, number of leaves/plant at 60 DAS, days to first flowering, plant height, seed yield/plant, 1000-seed weight, green leaf yield/plant and number of seeds/pod showed maximum contribution towards genetic divergence. Thus, significant genetic variability and considerable amount of genetic diversity is present among the fenugreek genotypes under study and selection of the genotypes on the basis of these characters will be highly rewarding.
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