Effect of SO2 the endogenous hormone synthesis wheat seeds

II SUMMARY Mastar Thesis EFFECT Of SQ2 Of* THE ENDOGENOUS HORMONE SYNTHESİS IN WHEAT (TRSTICUm AESJ1VÜM L.) SEEDS. Yaşar KIRAN Fırat Una varsity Graduate School Of Natural And Applied Sciences Department Of Biology 1SS5, Page:1S In the nassarch woifc. the affects of S02. an tnporiant air poöutant. on tha endoganous hormona synthase in mıhsat (Triücum asstiaum L) seeds. M irst, aarying cones niraiions of S03 *\ere appEad to Iha germination medium of trchast seeds, and tha concentration which mhh'iBÛ the germination completely i^ss determined ss bang 40 ppm. Lalar, homıone effraction in&a dona from tha seeds of which tha germination was complstery mhfciad by S02 treatment as companad to tha untraatsd seeds. The rssuis shored that an inhMon of GAg synihesk abng wan & decrease of ÎAA synthesis was caused by the treafen ant where as ABA synthesis was remarkably increased. The fsndin-g that tha inhibitory effects of 802 on the abous-mentioned phenomena was persistent euan aflar û was ramowad from tha germination medium mphj that SQ2 interferes directly or indirectly wöh hormone synthesis mechankm. KEYWORDS: S02. Plant. Hormone.