Screening of Groundnut genotypes for cultivation under moisture stress condition
1S. Udhaya bharathi, *1K. Suseendran, 1S. Jawahar and 2M.V. Sriramachandrasekharan
1Department of Agronomy, 2Department of Soil Science and Agricultural Chemistry, Faculty of Agriculture, Annamalai University, Annamalai Nagar - 608002 (India) Corresponding Author* : lenasusee@gmail.com
ABSTRACT
Moisture stress is the most significant factor, which limits production of groundnut. The moisture stress affects the crop at different growth stages during growing season. In groundnut moisture stress during flowering and pod filling stage is critical for yield. In the present study the response of 10 released groundnut varieties (VRI 2, VRI 6, VRI 8, TMV 7, TMV 13, TMV 14, K 6, JL 24, DHARANI, CO 3) and three cultures (VG 19721, VG 18089, VG 17008) were investigated to screen the groundnut genotypes for cultivation under moisture stress condition in pot experiment conducted at Sananandal village of Thiruvannamalai district (March to June 2020). The moisture stress was imposed by withholding the irrigation from flowering to pod initiation stage for stressed pot and regular irrigation was given for non stressed pots. Observation were recorded for pod yield (g plant-1) and kernel yield (g plant-1). The data were subjected to drought tolerance parameter viz., Drought tolerance index (DTI) and drought susceptibility index (DSI) for pod yield (g plant-1). Among the genotypes TMV 7 is found highly tolerant to moisture stress based on drought tolerant index and drought susceptibility index. Groundnut genotype CO 3 were found to more sensitive to moisture stress when compared to rest of genotypes.