Year: 2018 | Month: February | Volume 11 | Issue 1
Phenotyping for Grain Mineral Contents (Iron and Zinc) in PAU201 × Palman 579 F5 and BC1F4 Populations in Rice (Oryza sativa L.)
Abstract:
Rice (Oryza sativa L.) occupies an enviable prime place among the food crops cultivated around the world. Biofortification refers to the development of micronutrient-dense staple crops using the best traditional breeding practices and modern biotechnology. F5 (278) and BC1F4 (212) plants derived from the cross between PAU201 (high yielding) and Palman 579 (Iron rich) were phenotype during 2013-14 crop season. The results showed 17.14% plants in F5 and 5.60 % plants in BC1F4 populations perform higher than Palman 579 for zinc content. Likewise, 1.07% F5 and 31.30% BC1F4 populations performed higher than PAU201 for grain yield/plant and 17.14% F5 population and 61.21% BC1F4 population performed higher than PAU201 for 1000-grain weight. Plants showed large variation for various grain yield related traits for iron and zinc contents. Pearson’s correlation coefficients showed Iron, zinc content and grain yield/plant were positively correlated to all the studied traits in both the populations except plant height in BC1F4 population. 1000-grain weight showed significant positive correlation in both the population with panicle length, grain yield/plant, iron content and zinc content. Notably, one F5 plant (plant number 48-14-3-2) had exceptionally high iron content (296.5 μg/g). The distribution curves showed normal parabolic distribution for effective number of tillers/plant and zinc content. Frequency distribution curves for iron content were skewed towards Palman 579 in F5 and BC1F4 populations. This indicated that available populations is feasible to plan a breeding program to develop high-yielding, mineral rich rice genotypes and to identify genomic location for micronutrients content.
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