Vol. 11, Issue 11 (2022)

Author(s):
Bijjam Chandra Reddy, Beena M Nair, Shilpa Rananaware, Shailendra Sagar Prajapati, Mahesh Gujar, Arpita Mate and Jyoti Shinde

Abstract:
176 genotypes along with two check varieties (PKV NL 260, TL 99) were evaluated in augmented block design for eleven quantitative characters viz., days to 50 % flowering (on plot basis), days to maturity (on plot basis), plant height (cm), number of primary branches plant^-1, number of capsule plant^-1, seed yield plant^-1 (g), 1000 seed weight (g), % bud fly infestation, % alternaria blight infestation, powdery mildew (score), flower size (mm). At AICRP on Linseed and Mustard farm, College of Agriculture, Nagpur. Mahalanobis D² statistics were used for genetic diversity of eleven quantitative characters to identify potential parents for linseed programme aimed for yield improvement. The analysis of dispersion for eleven characters using Wilk's criterion, revealed highly significant difference between genotypes for all eleven characters. The 178 genotypes were grouped into thirteen clusters by Tocher's method. The maximum inter cluster distance was recorded between cluster XII and XIII (D²=40.20) and in between cluster VII and XII (D²=37.76) whereas minimum inter cluster distance was found in between cluster V and cluster VI (D²=7.39). The canonical analysis revealed that differentiation for eleven characters among 178 genotypes was completed in five phases indicated the importance of number of capsule plant^-1, days to 50% flowering, seed yield plant^-1 for selecting parents. The canonical analysis and cluster means studied together revealed the importance of bud fly infestation%, number of capsule plant^-1, seed yield plant^-1, as an important contributing character towards the total divergence. The parents EC0041764, EC0041726, EC0001465, EC0001403, EC0541211, EC0541224, EC0041598, EC54225, EC41562, EC004140 can be used for further hybridization programme. These genotypes on hybridization with the existing check varieties may also be used for their improvement.