KIRAN*, M. C. KAMBOJ, SOMVEER NIMBAL AND DEEPAK KUMAR
Department of Genetics and Plant breeding,
CCS Haryana Agricultural University, Hisar-125 004 (Haryana), India
*(e-mail : email@example.com)
(Received : 5 July 2022; Accepted : 24 July 2022)
The field experiment was conducted at CCS HAU Regional Research Station, Karnal using 20 maize hybrids and 40 maize inbred lines sown with two replications during spring 2021-22 conditions. Analysis of seed vigour parameters was carried out at laboratory of department Seed Science and Technology, CCS HAU, Hisar. Seed vigour parameters namely standard germination (SG) (%), seedling
length (SL) (cm), seedling dry weight (SDW) (g), 100- seed grain weight (HGW) (g), seedling vigour index I (SVI) and seedling vigour index II (SVII) and grain yield per plot (GY/P) (g) were analyzed. Analysis of variance revealed significant variations among the genotypes for different traits under study. In inbred lines sixteen genotypes showed >90% of standard germination (SG) and only three genotypes reported <80% SG. Whereas, in case of hybrids out of 20 genotypes only one showed >90% SG, fourteen genotypes reported 85-90% and only five genotypes reported SG between 80-85 %. All the traits showed high heritability with high genetic advance (%) except grain yield per plot which showed moderately high heritability with moderate genetic advance (%). Correlation analysis revealed the positive and significant association among all the seed vigour parameters. Path analysis coefficient revealed positive direct effect of SG, SDW, SVI and HGW with grain yield per plot.
Key words: Spring maize, seed vigour, grain yield