Effect of sprinkling of wheat seeds with ethylene chlorol in raising the tolerance of plants to 1- the effect of the elimination of some phenotypes

Abstract

Seeds of Triticum aestivum L. (Abu-Greab-3-cultivar) were used to indicate the possibility of spraying of wheat seedlings with ethylene glycol (EG) (an antifreeze substance) to increase the freezing tolerance ofwheat plants .The study was catTied out during the winter of 2003-2004 as factorial experiment ( 4x4) according to randomize complete block design (RCBD) with three replicates .The first factor comprised four levels of EG(0,5,10,20%.v/v) ,while the second factor comprised four periods of exposure to -5°c (0 ,6 , 12 and 24 hrs ).Different concentrations ofEG showed significant increase at 0.05 level of significance in: percent of survival plants , main stem height, no. of tillers/plant and amourit of chlorophyll a and b fresh and dry weights of first ,second and third leaves and complete plant .The increase in freezing periods showed significant decrease at 0.05 level of significance in all mentioned parameters .The interactions between the tow factors were also significant indicating that the presence of EG eliminated the bad effects of freezing on plants ;and the results indicated that 10% of EG was better that other concentrations used.

Keywords

• wheat seeds
• ethylene chlorol
• phenotypes