Effect of aerobic cultivation on yield, biochemical and physiological characters of selected rice genotypes
2010
Reddy, A Meghanatha | Shankhdhar, Deepti | Shankhdhar, S.C. | Mani, S.C.
A field experiment was conducted during wet seasons of 2004 and 2005 to find out the suitability of rice genotypes for higher evaluating zinc and iron content under aerobic cultivation. The maximum photosynthetic efficiency (Fv/Fm) was in Kasturi at flowering stage and BPT-5204 at grain filling stage. Most of the genotypes had higher zinc content under irrigated condition as compared to aerobic rice cultivation. Amongst the genotypes studied BPT-5204 had higher zinc content in shoots and DRRH-1 in grains under irrigated condition. Under aerobic cultivation Jaya had higher zinc content in shoots and Kasturi in grains. IR72176-307-4-2-23, DRRH-1 and BPT-5204 had higher iron content (794.30–992.60) in shoots under aerobic condition while Jaya, Pant Dhan 4 and Kasturi under irrigated condition. Most of the genotypes showed higher iron contents in grains under normal condition as compared to alternate wetting and drying. In general zinc content increased while iron content decreased under aerobic cultivation. The total chlorophyll content decreased 6% in DRRH1 and 24.4% in BPT5204 under aerobic cultivation. Higher chlorophyll stability index was found in Pant Dhan 4 at vegetative and flowering stages and Jaya at grain filling stage.
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