P. LATHA*, K.V. NAGA MADHURI, A.R. NIRMAL KUMAR, P. SUDHAKAR, R.P. VASANTHI AND K. JOHN
Institute of Frontier Technology, RARS, ANGRAU, Tirupati- 517 502, Andhra Pradesh, India.
A pot culture experiment was conducted to screen 20 groundnut genotypes for high root mining ability under phosphorus (P) deficient conditions. Significant genotypic variation was observed among genotypes under both P sufficient and P deficient treatments. The results of the study revealed that the mean shoot length and pod weight recorded high in P sufficient soils compared to P deficient soils whereas the mean anthocyanins, root length, root weight and shoot weight recorded high in P deficient soils compared to P sufficient soils. There were no significant differences among the genotypes for number of lateral roots. Anthocyanins recorded high in 1157A and 1398 and recorded low in TCGS 1275 and 1273. The genotypes TCGS 1398, 1275 and 1273 recorded high shoot length, number of lateral roots, and shoot weight. Root length recorded high in TCGS 1330 and 1157. Root weight recorded high in 1398 and 1273. Pod weight recorded high in TCGS 1073, 1350 and 1273. Hence it can be concluded that, TCGS 1273 can be identified as P efficient line based on high root mining traits, and pod yield whereas TCGS 1398, 1275 and 1330 can be identified as P efficient lines based on their high root mining traits, and moderate pod yields.
Groundnut genotypes, P efficiency, anthocyanins, root traits, shoot biomass