RT - Journal Article T1 - The Effect of Drought Stress on Soluble Sugar, Total Protein, Proline, Phenolic Compound, Chlorophyll Content and rate Reductase Activity in Soybean (Glycine max L.cv.Gorgan3) JF - jsci YR - 2006 JO - jsci VO - 18 IS - 56 UR - http://jsci.khu.ac.ir/article-1-1177-en.html SP - 537 EP - 550 K1 - Drought K1 - soybean K1 - sugar K1 - proline K1 - Protein K1 - phenolic compound K1 - Nitrate reductase K1 - chlorophyll AB - The mechanism of soybean(Glycine max L.cv.Gorgan 3) response to drought stress was evaluated. The plants were grown in pots under 23 ± 2°C temperature and 14000 lux light intensity and 14hr photoperiod. When first leaf appeard, three irrigation treatments occurred that consisted as one every day(control), once in three(mild stress) and in five days(sever stress).During 15 days the plants were irrigated an amount of 150 ml. The effect of irrigation treatment on the soluble sugar, total protein, proline, phenolic compound, chlorophyll content and nitrate reductase activity was studied.The results showed that in the root soluble sugar and proline content in mild and sever stress significantly increased while in the stem and the leaf these compound considarably increased under sever stress the total protein ,chlorophyll a,b and nitrate reductase activity in leaf especially decreased in sever stress. Also the decrease phenolic compound in leaf under this condition was significant LA eng UL http://jsci.khu.ac.ir/article-1-1177-en.html M3 ER -