پديد آورنده :
دانش بخش، بهاره
عنوان :
مقايسه پاسخ تعدادي از ارقام گندم متفاوت از لحاظ روي كارايي به تنش هاي شوري و كمبود روي
مقطع تحصيلي :
كارشناسي ارشد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان،دانشكده كشاورزي
صفحه شمار :
چهارده،156ص.:مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
امير حسين خوش گفتارمنش،حسين شريعتمداري
استاد مشاور :
مجيد افيوني،اسماعيل كك مك
توصيفگر ها :
فيتو سيدروفور , نشت
تاريخ نمايه سازي :
15/1/1389
استاد داور :
مژگان سپهري،بهرام باني نسب
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
Comparing Response of Some Wheat Genotypes with Different Zinc Efficiency to Salinity and Zinc Deficiency Stresses Bahareh daneshbakhsh Email address daneshbakhsh@yahoo com Date of submission 3 11 2009 Department of soil Science Isfahan University of Technology Isfahan 84156 83111 IranDegree M ScSupervisor Assoc Prof Amirhossein Khoshgoftarmanesh amirhkhosh@cc iut ac ir AbstractSalinity and zinc Zn deficiency are two growth and yield limiting factors in most arable landsin Iran This hydroponics study was conducted to investigate the response of bread wheatgenotypes Triticum aestivum L cvs Kavir Rushan and Cross to oxidative stress induced by Zndeficiency and salinity at three salinity levels 0 60 and 120 mM NaCl and two levels of Zn 0and 1 M in the form of ZnSO4 During the plant growth the phytosiderophore released by theroots was collected and measured using the method of Cu mobilization from the resin The rootleakage was collected and K Fe Zn and Mn concentrations of the leakage were measured Afterplant harvesting shoot and root dry matter yield as well as root and shoot concentrations of K Na Ca Mg P Fe Zn Mn and Cu were measured In addition root cell membrane permeabilityand reactive sulfhydryl groups concentrations were determined Zinc application significantlydecreased the root dry matter yield whereas it had no effect on the shoot dry matter weight Salinity had negative effect on the shoot and root dry matter yield Zinc deficiency had no effecton the root membrane permeability and concentration of reactive sulfhydryl groups in all wheatgenotypes By increasing salinity the root membrane permeability and the concentration ofreactive sulfhydryl groups significantly increased in all wheat genotypes The Fe concentrationin the root leakage decreased by Zn application in the Kavir plants In contrast salinity increasedconcentrations of K Fe Zn and Mn in the root leakage in all wheat genotypes The 120 mMNaCl treatment increased significantly the concentrations of reactive sulfhydryl groups Zincnutrition increased the root and shoot Na Mg and Zn concentrations whereas it reduced the rootand shoot concentrations of Fe The root concentrations of K and Mg and the shootconcentrations of Ca and Mg decreased by increasing salinity while shoot K Na P Fe Zn andMn concentrations and root Ca Cu Na P Fe Zn and Mn increased by salinity In all wheatgenotypes Zn application increased the Na Mg and Zn concentrations while decreased the Feconcentration in the root and shoot The effect of Zn deficiency and salinity on thephytosiderophore release varied among wheat genotypes Zinc application increasedphytosiderophore release in the Rushan plants while it had no significant effect on thephytosiderophore release in the Kavir and Cross genotypes Both in the Rushan and Kavirgenotypes salinity increased the phytosiderophore exudation whereas the Cross genotypereleased less amount of phytosiderophore under saline conditions Key words Salinity Phytosiderophore Zinc efficiency Leakage
استاد راهنما :
امير حسين خوش گفتارمنش،حسين شريعتمداري
استاد مشاور :
مجيد افيوني،اسماعيل كك مك
استاد داور :
مژگان سپهري،بهرام باني نسب
