Identification of drought tolerant genotypes of barley (Hordeum vulgare L.) through stress tolerance indices.

Stress tolerance indices viz tolerance index (TOL), mean productivity (MP), stress susceptibility index (SSI), geometric mean productivity (GMP), stress tolerance index (STI), yield stability index (YSI), yield index (YI), etc., were used to evaluate genotypes with high yield and drought tolerance. The barley line B-09006 produced highest yield under irrigated conditions but could not perform well under drought stress conditions. The lines B-09008, B-09005, B-09003 and B-09023 gave comparable yield under irrigated conditions but highest yield under stress conditions. These have highest values of MP, GMP and STI so these lines have high stress tolerance and yield potential. The highest Ys, MP, GMP, YI and STI were recorded in B-09008 line, followed by B-09003. Yp had positive and significant correlation with MP, GMP and STI while Ys had significant and positive correlation with all stress indices except TOL and SSI. First principal component analysis (PCA) contributed 76.9% of the variation with Yp, Ys, MP, GMP, STI and YI. Thus the first component can be named as the yield potential and drought tolerance while second PCA explained 22.8% of the total variability. B-09008, B-09003, B09005 and B-09026 were more suitable and stable genotypes for irrigated and drought stress conditions.

[1]  J. Ajalli,et al.  Evaluation of Drought Stress Indices in barley (Hordeum vulgare L.) , 2013 .

[2]  M. Zare.  Evaluation of drought tolerance indices for the selection of Iranian barley (Hordeum vulgare) cultivars , 2012 .

[3]  I. Travlos,et al.  Screening of Greek wheat landraces for their yield responses under arid conditions , 2012 .

[4]  Bahri Dağdaş.  EVALUATING OF DROUGHT STRESS TOLERANCE BASED ON SELECTION INDICES IN TURKISH BREAD WHEAT LANDRACES , 2011 .

[5]  Qiang Yu,et al.  Climate change effects on wheat yield and water use in oasis cropland , 2011 .

[6]  X. Mo,et al.  Responses of crop yield and water use efficiency to climate change in the North China Plain , 2010 .

[7]  H. Pakniyat,et al.  Assessment of drought tolerance in barley genotypes. , 2010 .

[8]  H. Kilic,et al.  Evaluation of grain yield and quality of barley varieties under rainfed conditions , 2010 .

[9]  S. Ciulca,et al.  Assessment of drought tolerance in some barley genotypes cultivated in West part of Romania , 2010 .

[10]  A. Amri,et al.  Efficiency of screening techniques for evaluating durum wheat genotypes under mild drought conditions. , 2010 .

[11]  M. Ashraf,et al.  Inducing drought tolerance in plants: recent advances. , 2010, Biotechnology advances.

[12]  A. Arzani,et al.  Assessment of Drought Tolerance in Segregating Populations in Durum Wheat , 2006 .

[13]  J. Kelly,et al.  Traits related to drought resistance in common bean , 1998, Euphytica.

[14]  N. Fonzo,et al.  Identification of bread wheat, durum wheat and barley cultivars adapted to dry areas of Southern Italy , 2004, Euphytica.

[15]  M. Labuschagne,et al.  Expression of drought tolerance in F1 hybrids of a diallel cross of durum wheat (Triticum turgidum var. durum L.) , 2003 .

[16]  E. Farshadfar,et al.  Screening drought tolerance criteria in maize , 2002 .

[17]  Y. Kaya,et al.  Additive Main Effects and Multiplicative Interactions Analysis of Yield Performances in Bread Wheat Genotypes across Environments , 2002 .

[18]  O. P. Yadav,et al.  Evaluation of indices for identification of pearl millet cultivars adapted to stress and non-stress conditions , 2001 .

[19]  J. Mitra.  Genetics and genetic improvement of drought resistance in crop plants , 2001 .

[20]  R. Campanile,et al.  Evaluation of field and laboratory predictors of drought and heat tolerance in winter cereals , 1997 .

[21]  J. Clarke,et al.  Evaluation of methods for quantification of drought tolerance in wheat , 1992 .

[22]  G. Fernandez.  Effective selection criteria for assessing plant stress tolerance , 1992 .

[23]  G. M. Paulsen,et al.  Desiccation Tolerance and Its Relationship to Assimilate Partitioning in Winter Wheat , 1990 .

[24]  J. T. Musick,et al.  Evaluation of Screening Techniques for Breeding Drought-Resistanct Winter Wheat , 1988 .

[25]  P. Bruckner,et al.  Stress tolerance and adaptation in spring wheat , 1987 .

[26]  W. Schapaugh,et al.  Stress Tolerance in Soybeans. I. Evaluation of Three Screening Techniques for Heat and Drought Tolerance 1 , 1984 .

[27]  A. Rosielle,et al.  Theoretical Aspects of Selection for Yield in Stress and Non-Stress Environment 1 , 1981 .

[28]  James H. Torrie,et al.  Principles and procedures of statistics: a biometrical approach (2nd ed) , 1980 .

[29]  R. Fischer,et al.  Drought resistance in spring wheat cultivars, 1. Grain yield responses. , 1978 .