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Effects of salicylhydroxamic acid on relative levels of starch and total sugars in different grains growing in the same spikelet of wheat

The effects of salicylhydroxamic acid on relative levels of starch and total sugars were studied in different grains (bold and small) growing in the same spikelet of wheat (Triticum aestivum L. var. PBW-343). The plants were grown in a screen covered hall under otherwise natural conditions. A concentration of 10 ppm salicylhydroxamic acid was applied at anthesis stage with the help of cotton plugs, which remained on ears of mother shoots (MS) for 48 hours. Labeled spikes were sampled five times, seven-day intervals started from seventh day after anthesis (DAA) up to 28 DAA, and at maturity. The application of salicylhydroxamic acid presented the unique observations. The inhibitor behaved in an enigmatic way and proved to be a promoter when being assessed under the criterion of relative levels of starch and total sugars. The salient points emerging through the use of salicylhydroxamic acid were that (i) both bold and small grains showed an increase in relative levels of starch and total sugars from 14 and 28 DAA stages respectively (P<0.01) and (ii) in spite of aforementioned increment, they continued to exhibit the disparity between them and at maturity the smaller grains still showed lower starch and higher total sugars than the bolder grains. [Alireza Houshmandfar, Davood Eradatmand Asli. Effects of salicylhydroxamic acid on relative levels of starch and total sugars in different grains growing in the same spikelet of wheat. Journal of American Science 2011;7(6):1237-1243]. (ISSN: 1545-1003). http://www.americanscience.org.