Identification of Superior Segregants for Drought Tolerance and Productivity Traits in Backcross Inbred Lines (BILs) Derived from NERICA Introgression under Rainfed Ecosystem  

E. A  Sangodele 1 , R. R.  Hanchinal 1 , N. G Hanamaratti 1 , V. V Shenoy 2 , H. L Nadaf 1
1. Department of Genetics and Plant Breeding, University of Agricultural Sciences, Dharwad, Karnataka State, India;
2. Barwale Foundation, Hyderabad, AP, India
Author    Correspondence author
Rice Genomics and Genetics, 2013, Vol. 4, No. 3   doi: 10.5376/rgg.2013.04.0003
Received: 05 Feb., 2013    Accepted: 15 Mar., 2013    Published: 08 May, 2013
© 2013 BioPublisher Publishing Platform
This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Preferred citation for this article:
Sangodele et al., 2013, Identification of Superior Segregants for Drought Tolerance and Productivity Traits in Backcross Inbred Lines (BILs) Derived from NERICA Introgression under Rainfed Ecosystem, Rice Genomics and Genetics, Vol.04, No.2 9-13 (doi: 10.5376/rgg.2013.04.0003)
Abstract

The aim of this study was to identify promising genotypes for upland rice ecosystem especially in drought prone areas. Backcross inbred line (BC1F6) developed from inter varietal cross of Swarna X NERICA were evaluated under water stressed environment for physiological and productivity related traits in the pot experiment. The result showed a clear expression of donor (NERICA) genome on the background of the recurrent parent (Swarna) in the BILs evaluated. Performance of BILs is generally lower under water stressed treatment when compared with non-stressed treatment for all the traits studied except leaf temperature which was higher under water stressed condition. Except for traits like leaf area and plant height, percentage reduction in performance of BILs for physiological and productivity component traits under water stress treatment are generally lower than the recurrent parent Swarna indicating their superiority over recurrent parent for drought tolerance.

Keywords
Rice; Backcross inbred line; Drought tolerance; Poductivity; Rainfed ecosystem
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