relation: http://oar.icrisat.org/10706/
title: Determining transpiration efficiency of bmr sorghum genotypes for progressive drought tolerance
creator: Romana, K K
creator: Kunapareddy, A
creator: Gupta, R
creator: Ashok Kumar, A
subject: Abiotic Stress
subject: Crop Improvement
subject: Sorghum
subject: Genetics and Genomics
description: Food and energy security are fundamental to the economic development  of nations and considering environmental issues, biomass-based  energy is a promising option in India through lingo-cellulosic  (2G) biofuel production. High biomass sorghum  is a promising feedstock for 2G biofuels production. However,  higher lignin content of the biomass and water-deficit stress  are major issues in enhancing biomass sorghum based biofuels  production. In sorghum, brown midrib (bmr) mutants with reduced  lignin content were developed.The present glass house  study summarizes a screening experiment of 14 bmr sorghum  lines (Atlas, Atlas bmr-12, Early hegarisart, IS 18542, Kanas collier,  N 592, N 593, N 594, N 595, N 596, N 597, N 598, Roxorange  and R-16) for progressive drought tolerance. The results  showed that among the various bmr lines tested, N 593 had  the highest transpiration efficiency in water-stressed conditions,  whereas N 592 had the highest in well-watered conditions.  The lowest transpiration efficiency was observed in N  597 under water stressed treatment. However, for well watered  treatments the lowest was observed in N 596. The genotypes  having higher transpiration efficiency has more water holding  capacity for longer time under water stressed conditions. This  preliminary study helps to identify genotypes with more water-holding  capacity to adapt well in drought conditions. The  bmr genotypes used here showed reduced lignin content vis-à-  vis white midrib sorghums. The identified lines with low-lignin,  high biomass and higher water holding capacity can be used as  feedstocks in 2G Biofuels production after appropriate testing  in target environments.
date: 2017-02
type: Conference or Workshop Item
type: PeerReviewed
format: application/pdf
language: en
identifier: http://oar.icrisat.org/10706/1/216.pdf
identifier:   Romana, K K and Kunapareddy, A and Gupta, R and Ashok Kumar, A  (2017) Determining transpiration efficiency of bmr sorghum genotypes for progressive drought tolerance.  In: InterDrought-V, February 21-25, 2017, Hyderabad, India.