Sulfur effects on sugar content, enzyme activity and seed yield of rapeseed (Brassica napus L.)

Abstract

A field experiment was conducted in a randomized complete block design with four sulfur levels, S0, S1, S2 and S3, including 0, 12, 24 and 36 kg ha-1 (respectively) along with 115 kg N ha-1, to evaluate the economic yield of the rapeseed variety (Hyola401) in Abandankash in the Central District of Sari County in Northern Iran. Parameters such as leaf nitrate reductase, root nitrate, leaf and root sugars, root peroxidase, leaf catalase, as well as seed yield were recorded. The results of the analysis of variance revealed that there were highly significant differences between characters for the majority of the traits such as leaf and root nitrate, leaf and root sugars, root peroxidase, leaf catalase, and seed yield. Due to significant positive correlations between root nitrate reductase and seed yield, increasing this enzyme in roots by sulfur application would have an accelerating effect on rapeseed seed yield. A highly significant positive correlation determined between leaf sugar content and seed yield (0.75**) indicated that increasing levels of sulfur had a direct effect on leaf sugar content, which had an accelerating effect on the weight of kernel yield. Sulfur application significantly increased seed yield compared to the control (S0 level), and it ranged from 2744 to 3215 kg ha-1 in S0 and S3.

Antioxidants enzyme activity in Brassica oleracea var. acephala under cadmium stress

“…Guaiacol is a non-cancerogenic substrate, which acts as a substrate for POX, where one mole of guaiacol is oxidized by one mole of hydrogen peroxide. The end product of this reaction is tetraguaiacol which is measured spectrophotometrically at 436 nm [43][44][45].…”

Effect of Nitrogen and Sulfur Fertilizers on Growth and Yield of Canola

“…And a group of vitamins, including vit Thiamin. This medicinal oil plant produces it in economic quantities, but its concentration in the canola plant can be affected by the levels of sulfur fertilizer addition [11][12][13] . [14] The experimental findings demonstrated that the utilization of 36 kg S ha -1 led to a significant increase in seed output, reaching a maximum of 3215 kg ha-1 compared to the control treatment (which yielded 2744 kg ha-1).…”