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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 6
First page : (1249) Last page : (1253)
Article doi: : http://dx.doi.org/10.18782/2320-7051.7143

Genetic Variability Analysis of Rice Genotypes Contrasting in Iron Content under Aerobic Condition

Nisarga, K. N.* and Aftab Hussain, I. S.

Department of Crop Physiology, UAS, GKVK, Bengaluru-560 065
*Corresponding Author E-mail: nishukgowda@gmail.com
Received: 2.11.2018  |  Revised: 11.12.2018   |  Accepted: 19.12.2018  

 ABSTRACT

Growing rice in non-puddled, well-drained and non-saturated soils, saves water and is the best cultivation practice under conditions of low water availability. But this method of rice cultivation has inherent problem of micronutrient deficiency, especially iron. Under non-saturated soil conditions, the availability of iron decreases, leading to reduced plant growth and yield. The present study aims to identify the traits which would help in enhancing the iron utilization and increase the yield under such conditions. Field trial was conducted in Kharif 2014 with twenty-four rice genotypes contrasting in leaf and grain iron content under aerobic condition. Iron content in leaf, root, shoot and in the grains was measured. Root biomass and grain yield were also recorded along with iron use efficiency and partitioning efficiency. Genetic variability analysis was done to estimate the genotypic, phenotypic and environmental variability of the measured traits. A path analysis was carried out to estimate the direct and indirect effect of the measured traits on the yield. These analyses revealed the existence of high genotypic variability in the measured traits. Iron use efficiency and partition efficiency had high and positive direct effect on grain yield. We conclude that, grain iron and root iron contents can be used as target traits to select rice genotypes with enhanced iron use efficiency and high yield under aerobic condition.

Key words: Aerobic rice, Genetic variability and Iron content.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Nisarga, K.N. and Aftab Hussain, I.S., Genetic Variability Analysis of Rice Genotypes Contrasting in Iron Content under Aerobic Condition, Int. J. Pure App. Biosci.6(6): 1249-1253 (2018). doi: http://dx.doi.org/10.18782/2320-7051.7143