Effectiveness of drought tolerance indices to identify tolerant genotypes in bread wheat (Triticum aestivum L.)

被引：7

作者：

El-Rawy M.A. ^{[1
]}

Hassan M.I. ^{[1
]}

机构：

[1] Department of Genetics, Faculty of Agriculture, Assiut University, Assiut

来源：

Journal of Crop Science and Biotechnology | 2014年 / 17卷 / 4期

关键词：

bread wheat; cluster analysis; correlation; drought tolerance; selection indices;

D O I：

10.1007/s12892-014-0080-7

中图分类号：

学科分类号：

摘要：

In order to assess efficiency of drought tolerance indices, 50 bread wheat genotypes were evaluated under three environments: normal (clay fertile soil, E1), 100% (E2), and 50% (E3) field water capacity in sandy calcareous soil. A total of 14 drought tolerance indices including grain yield/plant, grain yield/spike, 1000-kernel weight, spike length, no. of tillers, plant height, flowering time, stomata frequency, stomata width, stomata length, drought susceptibility index (DSI), stress tolerance index (STI), yield stability index (YSI), and harmonic mean (HM) were estimated. A moderate to high broad-sense heritability was obtained for 1000-kernel weight (0.47), spike length (0.38), plant height (0.54), flowering time (0.73), stomata frequency (0.59), and stomata length (0.54). Grain yield/plant was strongly positively correlated with grain yield/spike, no. of tillers, plant height, flowering time, stomata length, STI, YSI, and HM, while negatively correlated with stomata frequency and DSI in E2 and E3, respectively. Thus, highly heritable traits strongly correlated with grain yield under stress conditions especially stomata frequency and length could be used as reliable indices for selecting high-yielding genotypes tolerant to drought stress. Cluster analysis based on morpho-physiological traits suggested the group 3 genotypes in E2 as the most tolerant genotypes to be used for developing improved varieties. © 2014 Korean Society of Crop Science and Springer Science+Business Media Dordrecht.

引用

页码：255 / 266

页数：11

共 50 条

[1]

Ahsan M., Hader M.Z., Saleem M., Aslam M., Contribution of various leaf morpho-physiological parameterstowards grain yield in maize, Int. J. Agr. Biol., 10, pp. 546-550, (2008)

[2]

Akcura M., Partigoc F., Kaya Y., Evaluating of drought stress tolerance based on selection indices in Turkish bread wheat landraces, J. Anim. Plant Sci., 21, pp. 700-709, (2011)

[3]

Badieh M.M.S., Farshadfar E., Haghparast R., Rajabi R., Zarei L., Evaluation of gene actions of some traits contributing in drought tolerance in bread wheat utilizing diallel analysis, Ann. Biol. Res., 3, pp. 3591-3596, (2012)

[4]

Barker T.C., Campos H., Cooper M., Dolan D., Edmeades G.O., Habben J., Schussler J., Wright D., Zinselmeier C., Improving drought tolerance in maize, Plant Breed. Rev., 25, pp. 173-253, (2005)

[5]

Bhargava S., Sawant K., Drought stress adaptation: Metabolic adjustment and regulation of gene expression, Plant Breed., 132, pp. 21-32, (2013)

[6]

Bkagwat S.G., Bhatia C.R., Selection for flag leaf stomata frequency in bread wheat, Plant Breed., 110, pp. 129-136, (1993)

[7]

Blake N.K., Lanning S.P., Martin J.M., Sherman J.D., Talbert L.E., Relationship of flag leaf characteristics to economically important traits in two spring wheat crosses, Crop Sci., 47, pp. 491-494, (2007)

[8]

Bouslama M., Schapaugh W.T., Stress tolerance in soybean. Part 1: Evaluation of three screening techniques for heat and drought tolerance, Crop Sci., 24, pp. 933-937, (1984)

[9]

Campos H., Cooper M., Habben J.E., Edmeades G.O., Schussler J.R., Improving drought tolerance in maize: A view from industry, Field Crops Res., 90, pp. 19-34, (2004)

[10]

Clarke J.M., DePauw R.M., Townley-Smith T.F., Evaluation of methods for quantification of drought tolerance in wheat, Crop Sci., 32, pp. 728-732, (1992)

← 1 2 3 4 5 →