TY - JOUR JF - JSTNAR JO - jwss VL - 15 IS - 57 PY - 2011 Y1 - 2011/10/01 TI - Response to Iron and Zinc Deficiency of Four Corn Hybrids in the Nutrient Solution, I: Growth and Fluorescence Parameters of Leaf Chlorophyll TT - پاسخ چهار دورگه ذرت به کمبود آهن و روی در محلول غذایی در شرایط کشت بدون خاک، I:‌ رشد گیاه و ویژگی‌های فلورسانس کلروفیل برگ N2 - The growth and fluorescence parameters of chlorophyll in four corn hybrids including two sweet (K.S.C. 403 and K.S.C. 404) and two grain hybrids (S.C. 500 and S.C. 700) were evaluated in response to Fe and Zn nutrition in a nutrient solution culture. This study was conducted in a randomized complete block design with a factorial arrangement with three replications at the Soilless Culture Research Center (SCRC). Corn hybrids were exposed to two Fe levels (5 and 50 µM Fe in the form of FeEDTA) and two Zn levels (0 and 2 µM Zn in the form of ZnSO4). Increasing Fe concentration in the nutrient solution increased F0, Fm, and Fv/Fm values by 48, 96, and 123%, respectively. The fluorescence parameters of chlorophyll were affected by corn hybrid and there were significant differences in F0 and Fv/Fm at 1% level and Fm at 5% probability level among the studied hybrids. Iron deficiency significantly (P SP - 159 EP - 168 AU - H.R. Eshghizade, AU - A.H. Khoshgoftarmanesh, AU - P. Ehsanzadeh, AU - M. Kafi, AD - KW - Chlorophyll fluorescence KW - Corn hybrids KW - Zinc KW - Iron; Nutrient solution. UR - http://jstnar.iut.ac.ir/article-1-1866-en.html ER -