MORPHOLOGICAL AND BIOCHEMICAL CHARACTERISATION STUDIES IN FENUGREEK (Trigonella foenum-graceum L.) GENOTYPES
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Date
2019-11-05
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K.R.C COLLEGE OF HORTICULTURE, ARABHAVI (UNIVERSITY OF HORTICULTURAL SCIENCES, BAGALKOT)
Abstract
The investigation on “morphological and biochemical characterization studies in fenugreek genotypes” was conducted in the field of Vegetable Science of Kittur Rani Channamma College of Horticulture, Arabhavi. Seven genotypes collected from AICRPS Centre, Jobner, two genotypes from AICRPS, HRS, Lam, Guntur and thirteen genotypes from different parts of Karnataka were evaluated in randomized block design with two replications during Rabi 2018.
The analysis of variance revealed highly significant (both at P=0.01 and P=0.05) difference among the genotypes for all the characters studied indicating the higher magnitude of variability in the germplasm except for days to 50% flowering, number of leaves (90 DAS), number of primary branches (30 DAS), number of secondary branches (30 and 90 DAS) and carbohydrate content in the seeds.
The very high estimates of heritability coupled with high values of genetic advance over per cent mean (GAM) were observed for traits such as number of secondary branches (30 DAS), chlorophyll content in the leaves, dry matter content per plant, petiole length, seed size and number of pods per plant which indicates predominance of additive components for these traits and hence direct selection would be more effective in improving these traits.
The results on correlation and path analysis revealed high positive and significant association of seed yield per plant with characters Viz., dry matter content per plant, pod width, number of pods per plant, secondary branches at 30 DAS, herbage yield per square meter area and these characters also had high direct and indirect effect on seed yield per plant. Hence direct selection for these traits would be more useful in the improvement of yield per plant.
Based on Mahalonobi’s D2 analysis, 22 genotypes were grouped into 6 clusters. The cluster I showed maximum intra-cluster distance (D2 = 72.13), whereas, the maximum inter cluster distance was observed between cluster IV and VI (D2 =618.48). Among the 17 characters studied, seed yield per plant (29.00%) contributing maximum to genetic diversity. Top five genotypes viz., RMt-303, HUB-12, HUB-2, RMt-1 and RMt-305 recorded high foliage yield per plant, whereas, genotypes viz., HUB-5, HUB-4, HUB-3, HUB-1 and HUB-2 recorded high seed yield while the genotypes RMt-303, RMt-143,LS-2, HUB-12 and HUB-2 possessed dual purpose character and therefore, these genotypes can be further assessed for their stability.
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