Effect of ethylene gas and Tryptophan amino acid in two oat varieties under soil stress conditions

Abstract

A field experiment was conducted at the Research Station, Agriculture Faculty, Al-Muthanna University. The investigation was applied using the split-plot design, according to RCBD, with three replicates, varieties occupied the main plots, amino acid tryptophan occupied the sub-plots, and ethylene levels occupied the sub-sub-plot. The results showed that Shifaa Variety was distinguished in the harvest index. Results showed its distinction in the characteristic of the Panicle number. The interaction between the varieties and the amino acids showed increased grain yield percentage and the Panicle numbers when the amino acid was added. The exchange of cultivars with ethylene showed a decrease in plant height at 250 ppm and an increase in the Panicle numbers, the tiller numbers and the number of grains Panicle -1. As for the interaction of amino acid with ethylene, the treatment of adding acid and concentration of 250 ppm was superior with increasing some traits, including the number of grains Panicle -1, grain yield tons ha-1 and biological yield. While in the triple interaction, the treatment of (oat 11 × amino acid × the addition of Ethylene 250 ppm) was superior on some traits, including the increase in, the Panicle numbers and 1000 grain weight. Keywords: ethylene gas, Tryptophan amino acid, oat, soil stress conditions