Evaluation of groundnut genotypes for late season drought tolerance 

DOI: 10.18805/lr.v38i6.6721    | Article Id: LR-3156 | Page : 763-766
Citation :- Evaluation of groundnut genotypes for late season drought tolerance .Legume Research-An International Journal.2015.(38):763-766

S. Pavithradevi, N. Manivannan*, P. Vindhiya Varman and K. Ganesamurthy

nmvannan@gmail.com
Address :

Department of Oilseeds, Tamil Nadu Agricultural University, Coimbatore-641 003, India.

Abstract

Fifty  genotypes  of  groundnut  including  released  varieties  and  advanced  breeding  lines were  used  to  assess  the  drought  tolerance. These  genotypes  were  evaluated  both  in  managed  drought  stress  (DS)  and  non  stress (NS) situations during post rainy season (Jan- April), 2011 at Oilseeds Farm, Tamil  Nadu  Agricultural  University,  Coimbatore,  Tamil  Nadu,  India. The  drought  stress  was imposed  by  withholding  irrigation  after  60  days  after  sowing  for  the  drought  stress  trial. Observations  were recorded  for  pod  yield  per  plant  and  kernel  yield  per  plant  on  randomly  chosen  five  plants  per entry per replication.  The data were subjected to ANOVA and drought tolerance parameter viz., drought susceptibility index (DSI) for pod yield per plant and kernel yield per plant.  The results indicated  that  genotypes  differed  significantly  for  pod  and  kernel  yield  per  plant. Among the genotypes, 7 and 6 genotypes were observed as highly drought tolerant based on pod and kernel yield per plant respectively. A  total  of  6  and  9  genotypes  recorded  as  highly susceptible to drought for pod and kernel yield per plant respectively.  Among these genotypes, each  three  drought  tolerant  (ICGV  91114,  K1375  and  ICGV  02125)  and  drought  susceptible (ICGV  01279,  ICGV  98170  and  ICGV  98175)  genotypes  were  selected  for  hybridization programme to develop mapping populations.

Keywords

Groundnut Drought susceptibility index Pod yield Kernel yield.

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