HARSH CHAURASIA, RAJESH KUMAR ARYA*, RAJAT SHARMA, AMIT, ANKIT DHILLON AND DILBAGH
Department of Genetics and Plant Breeding,
CCS Haryana Agricultural University, Hisar-125 004 (Haryana), India
*(e-mail : rakarayogi@gmail.com)
(Received : 5 March 2022; Accepted : 28 March 2022)
SUMMARY
To estimate the extent of genetic diversity of 53faba bean genotypes for 17 morphobiochemical characters, an experiment was carried out based at Research Farm of MAP Crop Section, Department of Genetics & Plant Breeding, CCS HAU, Hisar in rabi2019-20. The principal component analysis developed 17 principal components. Out of seventeen, only six PCs (PC1, PC2, PC3, PC4, PC5, and PC6) exhibited eigen value greater than one viz. 4.31, 2.11, 1.86, 1.61, 1.21 and 1.09, respectively. A total of 71.7% variation was explained by first six PCs. Maximum variation was explained by PC1 (25.36%) followed by PC2 (12.42%), PC3 (10.95%), PC4 (9.48%), PC5 (7.12%) and PC6 (6.42%). PC1 was the most informative PC as it explained 25.36% of total variation and positive correlation with seed yield, pod yield per plant, number of pods per plant, biological yield and number of clusters per plant. PC2 added 12.42% of total variation and was mostly correlated to pod length and number of seed per pod. PC3 was dominated by phenological traits viz. days to 50% flowering and days to maturity whereas PC4 was explained positively by seed protein content and 100 seeds weight. Trait biplot ordination of 17 traits in faba bean genotypes on principal component axes indicated positive association of seed yield with harvest index, number of branches per plant,
100 seeds weight, weight per pod, number of seeds per pod, pod yield per plant and biological yield, because the vectors of these attributes intersected at an acute angle. These findings can be used in breeding strategies for future hybridization programs for yield improvement and are appropriate for classification of diversity among faba bean germplasm
Key words: Eigen value,Faba bean, Principal Component and Variation