Journal of Proteomics & Bioinformatics
Open Access
ISSN: 0974-276X
+44 1223 790975
ISSN: 0974-276X
+44 1223 790975
D L Savithramma, Madhu S V, Mallikarjun K and Vinutha D N
University of Agricultural Sciences, India
Scientific Tracks Abstracts: J Proteomics Bioinform
Plant root is one of the major organs for water and nutrient uptake from soil. Root development and amount of water absorption from the soil are closely related. Under drought condition, the success of crop plants often depends on growth of roots. In the present study, gravimetric experiment was conducted to evaluate the yield potential of released and pre-released groundnut genotypes. Root growth parameters such as root length, shoot length, shoot weight, leaf length, root volume and dry root weight were recorded in five genotypes viz., KCG-2, TMV-2, GKVK-5, GKVK-3 and GKVK-13 under controlled and water stress conditions in pot experiment at University of Agricultural Sciences, Bangalore, India. Stress was imposed for 20 days during flowering stage by balancing the amount of water applied to make it 50% stress. Analysis of variance revealed highly significant differences for the traits observed indicating the existence of variability in the material selected. In controlled condition all the root traits exhibited higher mean values over stress condition in the genotypes studied except in GKVK-5 for root dry weight. In stress treatment GKVK-5, GKVK-3 and GKVK-13 genotypes exhibited higher mean values for root volume, root dry weight and root length. Genotypes GKVK-5, TMV-2 and KCG-2 recorded higher mean for shoot weight and leaf length. Among all genotypes GKVK-5 was identified as high yielding with 2.8 to 3.0 t/ ha, with low to moderate �?�?13C (17.53) and high �?´18O (31.24) and low specific leaf area (107.76 cm2/g) and was found to have higher water use efficiency or to be drought tolerant genotype indicating effective partitioning of the accumulated biomass towards root and shoot, while diverting relatively lesser towards shoot biomass. Hence, breeding for root development proved to be effective in increasing crop water use efficiency and drought tolerance.
D L Savithramma has completed her PhD from University of Agricultural Sciences, Bangalore, India and Postdoctoral studies as a Biotechnology National Associate from Indian Institute Science, Bangalore, India. She is a Professor of Genetics and Plant Breeding at University of Agricultural Sciences, Bangalore, India, one of the premier Agricultural Universities in India. She has published more than 70 papers in reputed journals and has released seven varieties in vegetable cowpea, seed cowpea, peanut and Chrysanthemum.
Email: nesarns@gmail.com