Vol. 11, Issue 2 (2022)

Author(s):
Arvind Kumar, CP Sachan, Rishabh Singh, Kuldeep Yadav and Rohit Kumar

Abstract:
An experiment was conducted at the laboratories of the Department of Seed Science and Technology, CSAU, Kanpur, during 2018-19 and 2019-20 to assess the seed vigour of twenty One Indian mustard varieties/genotypes. The freshly harvested seed of all the varieties variety/genotypes was assessed for seed vigour parameters viz., Test weight (g), Germination percentage, Seedling length (cm), Seedling dry weight (mg), Vigour index-I, Vigour index-II, Accelerated ageing test, Electrical conductivity test (μS cm-1 g -1), and Tetrazolium test percentage. The pooled data of both the years revealed that the highest test weight (6.73) was recorded in the variety Anmol, Pusa Bold, Bullet, while the highest germination percentage (94.72), seedling length (12.64), seedling dry weight (2.39), vigour index-I (1282.13), vigour index-II (243.84), and tetrazolium test percentage (96.54) was recorded in the Jagay Mani-1(96.54) followed by RH-30 (96.27), Giridhar (95.02), Prerna (94.52) and Dangi (89.36) The lowest electrical conductivity was also recorded in the variety Tanru-M (22.06) followed by Sitaram Rai (20.98), Anmol (20.52), Bathani (20.50) and Purni (18.52). Among all the twenty One Indian mustard varieties, the varieties Jagay Mani-1, RH30, Giridhar, Prerna, PM-25, PM-27,Dangi, and Araak showed superiority for almost all viability and vigour parameters. and Accelerated ageing test was also recorded in the variety The stress condition provided by the artificial ageing for 72 h in accelerated ageing chamber showed that the varieties Jagay Mani-1(78.90), PM-27 (76.44), RH-30 (76.16), PM-25 (74.35) and Kali (74.22) and had higher stress bearing capacity because these showed higher germination percentage even after the artificial ageing. On the contrary, the genotype Potni (62.34), Batani (62.42), Pomi (62.53), Tanru-M (62.94) and Giridhar (69.05) showed reduction in germination percentage after stress. The range varied from 62.34 to 78.90 with a general mean of 71.01 (Table 4.5). The comparison among the mean values showed 13 varieties were superior where as Eight varieties were inferior.