Effect of soil management practices on iron deficiency tolerance of aerobic rice

摘要: Aerobically grown rice cannot easily acquire iron from soil although it is abundant in due to the low solubility of oxidized ferric form aerobic environment. A more efficient solution this problem, thus, lies identification and use genotypes that can efficiently utilize iron. Eight genetically diverse varieties viz., ADT 38, 39, Pusa 33, MAS 26, 946-1, Basmati 370, IR 64 36 were raised on sufficient (100μM) deficient (1μM) Hoagland‟s nutrient culture ascertain variation deficiency tolerance measured basis various physiological parameters viz. shoot root mass, plant Fe content, leaf chlorophyll, recovery index release phytosiderophore (PS). Rice variety, 33 produced highest mass under both (Fe + ) - while 39 was most susceptible deficiency. Higher (384 μg per shoot), (37.7%), (0.86) (1.03 μmol -1 h -4 observed least values for all above attributes 39. The present study clearly showed has a distinct advantage condition higher phytosiderophores genotype could be exploited improving nutrition particularly condition.