Vol. 8, Special Issue 1, Part D (2024)

Abstract: The present investigation was carried out to understand effect of soil application of silica on biochemical parameters in relation to lodging tolerance in oat. Initially, two each lodging and non-lodging type oat cultivars were compared based on biochemical parameters in the pot culture experiment. The guaiacol peroxidase activity, polyphenols, lignin, potassium and silica were found higher in non-lodging than lodging type cultivars, whereas malondialdehyde content was found higher in lodging type cultivars. The effect of silica application @ 200 kg ha^-1 and @ 400 kg ha^-1 on biochemical parameters was recorded in 12 different oat genotypes under the field condition. With the increase in silica application from 200 to 400 kg ha^-1, the activity of guaiacol peroxidase enzyme, total polyphenols, lignin, potassium and silica contents were increased, while malondialdehyde content was decreased over the control in all oat genotypes. Among the twelve oat genotypes, JO-03-91, RO-11-1-4, UPO-212 and JO-2 were found promising genotypes for lodging tolerance.