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Grain iron and zinc association studies in rice (Oryza sativa L.) F1 progenies | Abstract
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Abstract

Grain iron and zinc association studies in rice (Oryza sativa L.) F1 progenies

Author(s): Nagesh, V. Ravindrababu, G. Usharani, T. Dayakar Reddy

Rice is grown in many different environments, can be a short, medium or long grain size. It can also be waxy (sticky) or non-waxy. Iron and zinc deficiencies have been reported to be a foodrelated primary health problem affecting nearly two billion people worldwide. The brown and red rice genotypes have high grain iron and zinc content and attempt was made to study the association between these mineral content with grain yield. A field experiment was conducted during kharif 2010 involving forty eight hybrids developed through hand emasculation followed by pollination. These hybrids were tested to estimate phenotypic and genotypic association among grain iron, zinc, yield attributes and grain yield. It was observed that grain yield was positively correlated with number of productive tiller per plant, test weight and number of grains per panicle. A positive correlation between iron and zinc content was observed while there is no correlation between grain iron and zinc content with grain yield. Path analysis revealed the highest direct effect of test weight on grain yield followed by number of productive tillers per plant and iron content.