1Department of Genetics and Plant Breeding, University of Agricultural Sciences, G.K.V.K, Bengaluru-560 065, Karnataka, India
2University of Horticultural Sciences, Bagalkot-587 104, Karnataka, India
*Corresponding Author: C. Nandini, Department of Genetics and Plant Breeding, University of Agricultural Sciences, G.K.V.K, Bengaluru-560 065, Karnataka, India, Email: nandini.vinutha@gmail.com
Online published on 20 July, 2020.
Groundnut is world important oilseed crop; productivity is low in the semi-arid regions due to frequent occurrence of drought. Identification of genotypes that have a greater ability to use limited available water is important to enhance productivity of the crop. Water Use Efficiency (WUE) is one such important trait, which increases yield under drought situation. Low level of DNA polymorphism has been detected in most of the laboratories due to allotetraploid nature. In the present study two parental lines of Recombinant Inbred line population NRCG12568 and NRCG12326 diverse for WUE related trait, such as Carbon Isotopic Discrimination (δ13C), Specific Leaf Area (SLA) and SPAD chlorophyll meter reading were studied for polymorphism using 350 simple sequence repeat (SSR) markers. Out of these, only 119 (34%) markers showed polymorphism in NRCG12568 and NRCG12326. Detection of polymorphism opens up the possibility of use of these markers for QTL map development for δ13C in groundnut.
Carbon Isotopic Discrimination (δ13C), DNA polymorphism, Recombinant Inbred line population (RIL)
