The experiment was conducted with an objective to identify the extent of transgressive segregation in F2 population of three different crosses of bread wheat for yield and yield contributing traits. The plants raised from three crosses showed transgressive segregation for all the characters under study. In most of the transgressive segregants, in each of the three crosses, better parent yield was transgressed with transgression of one or several other characters. The highest frequency of transgressive segregants for grain yield per plant has been observed in cross 2 (111) followed by cross 1 (107) and cross 3 (66). It was interesting to note that the transgression of grain yield per plant in association with the productive tillers per plant, length of spike, spikelets per spike, number of grains per spike and 1000 grain weight were observed more frequently. The most promising transgressive segregants observed in F2 generation of cross 1 were plant number 18, 105 and 109. In cross 2 were plant number 43, 47, 56, 66, 96, 100 and 153. Whereas, in case of cross 3 plant number 46, 136, 144, 196 and 238

Transgressive segregation, Association, Yield, Transgression, Wheat

Among all the three crosses under investigation the highest proportion of transgressive segregants were observed for number of grains per spike (16.83 to 44.13 %) followed by 1000 grain weight (30.79 to 38.41 %), grain yield per plant (20.95 to 35.24 %), length of spike (11.75 to 38.73 %), productive tillers per plant (21.59 to 33.97 %), days to maturity (15.24 to 27.62 %), days to 50 per cent flowering (10.79 to 16.83 %) and plant height (7.94 to 12.70 %). Based on performance of transgressive segregants, it is concluded that, when the desired intensity of a character is not available in the parents, transgressive segregation approach can be successfully used to extend the limit of expression of character. This could be possible by accumulation of favourable or plus genes, in hybrid derivatives from both parents involved in hybridization due to segregation and recombination

Yogesh V. Lokhande, Adhir R. Aher, Bhagyashri R. Bhosale and Sampada S. Bhopale (2024). Identification of Transgressive Segregants in F2 Generation of Bread Wheat (Triticum aestivum L.). Biological Forum – An International Journal, 16(9): 46-48