Drought resilient Flemingia semialata Roxb. for improving lac productivity in drought prone ecologies

J. Ghosh; V. D. Lohot; S. Ghosal; V. Singhal; N. K. Sinha

J. Ghosh ICAR-Indian Institute of Natural Resins and Gums, Ranchi
V. D. Lohot ICAR-Indian Institute of Natural Resins and Gums, Ranchi
S. Ghosal ICAR-Soil and Water Conservation Research and Training Centre, Dehradun
V. Singhal ICAR-Soil and Water Conservation Research and Training Centre, Dehradun
N. K. Sinha ICAR-Indian Institute of Agricultural Biotechnology, Ranchi

Keywords: Drought resilience, Flemingia semialata, lac productivity

Abstract

A drought tolerant line of Flemingia semialata (FS-S) has been identified from natural population as a better host plant for kusmi lac production and summer sustainability. FS-S had significantly higher fresh biomass, dry matter, broodlac and scraplac than local line (FS-L). Photosynthetic rate and stomatal conductance were also higher in FS-S line and it was fertilizer responsive too. It is more efficient in starch degradation than the local line which ultimately supports lac insect development. The high level of total sugar maintained by FS-S line is due to high chlorophyll content including carotenoid. Ascorbate peroxide and catalase (biochemical indicators for draught tolerance) was also higher in selected line.