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Screening groundnut genotypes using TIR (Temperature Induction Response) technique for thermotolerance

OAR@ICRISAT

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Relation http://oar.icrisat.org/10713/
 
Title Screening groundnut genotypes using TIR (Temperature Induction Response) technique for thermotolerance
 
Creator Rekha Rani, K
Latha, P
Sujatha, K
Vasanthi, R P
Janila, P
Usha, R
 
Subject Abiotic Stress
Groundnut
Genetics and Genomics
 
Description Heat is one of the major abiotic stresses that adversely affect
crop production worldwide at different stages of development.
Groundnut is a major crop cultivated in tropical and sub-tropical
regions where high temperature stress is a serious constraint
for its production. In the present study, temperature induction
response (TIR) was conducted for screening the tolerant genotypes,
where the seedlings were exposed to sublethal temperature
from 34ºC-54ºC for 4 hours 30 minutes followed by lethal
temperature at 58ºC for 3 hours. From the 100 diverse genotypes
screened, 24 showed tolerance to high temperature with mean
percent seedling survival of 92%, 30 showed moderate tolerance
and 46 were identified as temperature susceptible compared
with checks (100% survival). Results suggested that TIR is used
to identify stable thermotolerant genotypes and could be explored
as donor source useful in breeding programmes. Further
work will be focused on the physiological and molecular basis of
thermotolerance in selected tolerant and susceptible genotypes
for the identification of heat stress tolerant genes which could
be useful for engineering plants with improved heat tolerance.
 
Date 2017-02
 
Type Conference or Workshop Item
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/10713/1/Screening%20groundnut%20genotypes%20using%20TIR%20%28Temperature%20Induction%20Response%29.pdf
Rekha Rani, K and Latha, P and Sujatha, K and Vasanthi, R P and Janila, P and Usha, R (2017) Screening groundnut genotypes using TIR (Temperature Induction Response) technique for thermotolerance. In: InterDrought-V, February 21-25, 2017, Hyderabad, India.