6336

5924

كارشناسي ارشد

زراعت

اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي

1390

دوازده،131ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

مرتضي زاهدي

احمد ارزاني

14/8/90

محمدرضا سبز عليان، علي اكبر رامين

مهندسي كشاورزي

ID5924

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

The Effects of Mycorrhizal Symbiosis on Morphological and Physiological Characteristics of Safflower Genotypes under Salinity Hamed Mokhtari Hamed mokhtari@ymail com April 5 2011 College of Agriculture Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor s M Zahedi E mail address mzahedi@cc iut ac ir Abstract An experiment was conducted at the Isfahan University of Technology Iran Isfahan 40 85 N 77 83 W during September to November 2009 in order to evaluate the effects of mycorrhizal symbiosis on the response of safflower genotypes to saliniy The pot experiment was laid out using a factorial arrangement in a randomized complete block design with four replications In this experiment the inoculated and uninoculated plants of four safflower genotypes Kermanshah 47 Hamadan 17 Dincer PI536636 were tested at four salinity levels 0 50 100 and 150 mM of NaCl Plant height number of leaves per plant leaf area per plant plant dry matter chlorophyll content chlorophyll florescence net Co2 assimilation stomata conductance the concentration of sodium potassium and phosphorus in roots and leaves were measured With an increase in salinity level plant height leaf number leaf area plant dry matter chlorophyll content photochemical efficiency Fv Fm net Co2 assimilation stomata conductance the concentration of potassium and phosphorus in roots and leaves were reduced and the concentration of sodium in plant tissues was increased The interaction between salinity levels and genotype was significant on plant height and leaf area per plant but it was insignificant on plant dry matter The effect of salinity was not significant on the ratio of shoot root dry weight The inoculation of plant roots with mycorrhiza led to an increase in the number of leaves per plant leaf area per plant plant dry matter chlorophyll content photochemical efficiency net Co2 assimilation stomata conductance the concentration of phosphorus in plant tissues Mycorrhizal inoculation had no significant effect on the ratio of shoot root dry weight The interaction between salinity levels and mycorrhizal inoculation was significant on the concentration of sodium in the roots potassium sodium ratio in roots and leaves photochemical efficiency the content of chlorophyll A plant height number of leaves per plant leaf area per plant and leaf dry weight As the salinity level was increased up to 50 100 and 150 mM leaf dry weights of inoculated plants were decreased about 12 25 and 24 percent respectively These decreases were about 13 27 and 57 percent for uninoculated plants The results from this experiment show that salinity can negatively affects different growth parameters of safflower genotypes and these effects can be mitigated with mycorrhizal inoculation Keywords Safflower Genotype Salinity Mycorrhiza

مرتضي زاهدي

احمد ارزاني

محمدرضا سبز عليان، علي اكبر رامين