Abstract:
Five genotypes belonging to three different species of wheat were evaluated for their response to 3 different doses of fertilizers. Highly significant differences were revealed among the genotypes, fertilizers, and the interaction of genotypes and fertilizers for all the characters brought under study except the spike weight where the differences were only significant. No lodging occurred under control and at the minimum dose of fertilizers in all the genotypes. The tall genotypes namely C-591 and T. durum recorded a large proportion of lodged plants under the influence of moderate and high doses of fertilizers whereas Pak-81 showed the least susceptibility even at the maximum dose. The tall forms showed positive response in grain yield at the minimum level of fertilizers while the dwarf forms (Pak-81, Khyber-79 and T. sphaerococcum) registered their maximum increase at the maximum dose of fertilizers. The addition of fertilizers also caused a simultaneous addition in weight of spike almost up to the maximum dose in case of dwarf forms while the tall genotypes were nearly static. The addition of fertilizers favoured spike length and number of spikelets per spike in all the genotypes while 1000-grain weight was favoured only in the modern cultivars (Pak-81 and Khyber-79). High positive correlations were observed between the spike weight with spike length (0.857), number of spikelets/spike (0.612) and 1000-grain weight (0.587); between spike length with number of spikelets/spike (0.652) and 1000-grain weight (0.656); between number of spikelets/spike with 1000-grain weight (0.679); and between yield plot with spike length (0.504) and 1000-grain weight (0.502) the lodging gave either negative or very poor positive correlation with yield and yield components.
Page(s):
365-373
DOI:
DOI not available
Published:
Journal: Sarhad Journal of Agriculture, Volume: 3, Issue: 3, Year: 1987