Genetic variability, association studies and genetic divergence in Indian fenugreek (Trigonella foenum- graecum L.) varieties

Abstract

Indian fenugreek (Trigonella foenum-graecum L.) varieties were biometrically studied for seed yield and yield contributing traits to assess genetic variability, character association and genetic divergence. Highly significant differences between varieties for all the studied traits were observed. Pooled results illustrated high estimates of PCV along with GCV for number of branches per plant, test weight, number of pods per plant, number of nodules per plant, plant height and seed yield per plant. High heritability along with genetic advance was recorded for plant height and test weight. Association studies showed highly significant positive correlation and high direct effect of test weight, plant height and number of pods per plant on seed yield. Diversity analysis grouped the set of 17 varieties into two clusters and there was lack of parallelism between genetic and geographic diversities. Intra cluster distance was the highest in cluster I than cluster II. Test weight (37.50%) contributed the maximum to total divergence, followed by plant height.

Designing Selection Criteria by Using Association Studies and Estimation of Genetic Diversity in Fenugreek (Trigonella foenum-graecum L.) Germplasm

“…The least inter cluster distance was observed in between cluster V and III (13.91). Similar findings of intra and inter cluster distances were observed by Kole and Goswami (2015), Wojo et al (2015), Tariyal et al (2017), Panwar et al (2018), Sindhu et al (2018) and Yadav et al (2018).…”

“…The character, pod length showed negligible contribution towards the genetic divergence (Table 7). Similarly, pod number, thousands seed weight and number of primary branches per plant by Mathur et al (1992), plant height by Jain et al (2006) and test weight by Panwar et al (2018) were reported as main contributing characters towards the total genetic divergence. The above obtained results provides clue about the presence of sufficient genetic diversity among the genotypes under investigation.…”

“…Cluster III, cluster V, cluster VI, cluster VII, cluster VIII and cluster IX, each had only one genotype. Similarly, the fenugreek genotypes were grouped into 9 clusters by Pathak et al (2014), 5 clusters by Kakani et al (2015), 6 clusters by Wojo et al (2015), 4 clusters by Tariyal et al (2017) and 2 clusters by Panwar et al (2018). Among eight clusters, maximum intra cluster distance (Table 6) was observed in cluster IV (21.07) followed by cluster II (17.54) and cluster I (15.64) while other clusters showed no intra cluster distances.…”

Characterization of morphological and yield variation of fenugreek (Trigonella foenum-graecum L.) genotypes

“…The examined fenugreek genotypes and controls had significant mean plant height (24.95-85.15 cm). The different fenugreek genotypes have been studied by many researchers to determine the plant height under different ecological conditions 68.57-91.33 cm (Gürbüz et al, 2000), 19.22-64.66 cm (Panwar et al, 2018), 32.42-46.58 cm (Senkal et al, 2018). The results of the present study with respect to the plant height were in agreement with the above-mentioned findings of researchers.…”

Genetic divergence landrace of langsat (Lansium parasiticum) from Siberut Island based on ITS and MatK markers

“…The different pattern revealed from other studies. According to Panwar et al, (2017), there was no relationship between genetic divergence and geographical divergence in Indian fenugreek (Trigonella foenum-graecum Sample 1 2 3 4 5 6 7 8 9 10 11 12 13 14 DT1 -0,000 0,000 0,000 0,000 0,000 0,000 0,001 0,001 0,001 0,000 0,000 0,000 0,000 DT2 0,001 -0,000 0,000 0,000 0,000 0,000 0,001 0,001 0,001 0,000 0,000 0,000 0,000 KP1 0,000 0,001 -0,000 0,000 0,000 0,000 0,001 0,001 0,001 0,000 0,000 0,000 0,000 KP2 0,001 0,000 0,001 -0,000 0,000 0,000 0,001 0,001 0,001 0,000 0,000 0,000 0,000 LS1 0,007 0,006 0,007 0,006 -0,000 0,000 0,001 0,001 0,001 0,000 0,000 0,000 0,000 LS 2 0,007 0,006 0,007 0,006 0,000 -0,000 0,001 0,001 0,001 0,000 0,000 0,000 0,000 LP 0,007 0,009 0,007 0,009 0,007 0,007 -0,001 0,001 0,001 0,000 0,000 0,000 0,000 SC 0,013 0,015 0,013 0,015 0,015 0,015 0,015 -0,002 0,002 0,001 0,001 0,001 0,001 SM 1 0,013 0,015 0,013 0,015 0,015 0,015 0,015 0,006 -0,000 0,001 0,001 0,001 0,001 SM 2 0,013 0,015 0,013 0,015 0,015 0,015 0,015 0,000 0,006 -0,001 0,001 0,001 0,001 AT 1 0,010 0,012 0,010 0,012 0,012 0,012 0,012 0,012 0,012 0,012 -0,000 0,000 0,000 AT 2 0,013 0,015 0,013 0,015 0,015 0,015 0,015 0,012 0,012 0,012 0,003 -0,000 0,000 EL 1 0,006 0,007 0,006 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 0,007 -0,000 EL 2 0,010 0,012 0,010 0,012 0,012 0,012 0,012 0,012 0,012 0,012 0,012 0,012 0,004 -L.). The similarity was indicated in groundnut (Arachis hy pogaea L. ) wer e gen eti c divergen ce wer e not concordance to its geographical distribution (Venkateswarlu et al, 2011).…”