Selection indices to identify drought-tolerant grain sorghum cultivars

Menezes, C. B. de; Ticona-Benavente, César Augusto; Tardin, F. D.; Cardoso, M. J.; Bastos, E. A.; Nogueira, Douglas Willian; Portugal, Arley Figueiredo; Santos, C. V. dos; Schaffert, R. E.

doi:10.4238/2014.november.27.9

Cited by 32 publications

(25 citation statements)

References 22 publications

(7 reference statements)

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“…In the sensitive group the genotypes had high SSI values, demonstrating their susceptibility to salt and aptness only under normal conditions (Ashraf et al, 2015;Menezes et al, 2014). The results obtained through cluster analysis were confirmed by three-dimensional plots and Principle component analysis, which shows that the models describe the clustering data very well.…”

Section: Value Followed By Different Letter(s) Differs Significantlysupporting

confidence: 53%

Salt tolerance assessment of barley (Hordeum vulgare L.) genotypes at germination stage by tolerance indices

et al. 2016

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Abstract:This study was performed to assess several indices for identifying genotypes at germination stage with the best performance in salinity conditions. In order to evaluate the seed germination of barley genotypes in different levels of salt conditions, an experiment was conducted as factorial arrangement with a completely randomized design with 3 replications. The effect of salinity treatments was studied through an analysis of the germination, yielding results that show significant differences among genotypes. Stress tolerance index, stress tolerance, stress susceptibility index, germination reduction ratio, mean productivity and geometric mean productivity were used. The majority of used indices indicated that ESBYTM8910, 4 Shori and MBS8715 were the best barley genotypes showing the highest stress resistance for the greatest NaCl concentration. This result was similar to those obtained from the analysis of variance and statistical comparison of means of genotypes germination percentages. There were positive and strong correlations of germination percentage in normal and stress condition with STI in high levels of salinity. Thus, this correlation seems to be a useful indicator of tolerant genotypes at this stage.

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Section: Value Followed By Different Letter(s) Differs Significantlysupporting

confidence: 53%

Salt tolerance assessment of barley (Hordeum vulgare L.) genotypes at germination stage by tolerance indices

et al. 2016

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“…Manjarrez-Sandoval et al (1989) found that drought stress during anthesis caused a 31% reduction in grain number per head while grain size remained constant, so the loss in grain yield per panicle was about 36%. Menezes et al (2014) found that drought stress significantly affected the yield of sorghum lines, causing a reduction of 43% compared to the full-irrigation condition.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of grain yield in sorghum hybrids under water stress

et al. 2015

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ABSTRACT. Sorghum grain yield can be significantly affected by climatic changes, especially drought and high temperature. The purpose of this study was to evaluate hybrids of grain sorghum grown under normal irrigation conditions or water stress in order to select those likely to be more tolerant of drought. Forty-nine hybrids were grown in a randomized block design experiment, with three replications. The plots consisted of four rows of 5 m length. Grain yield, weight of 1000 grains, harvest index, days to flowering, and plant height were measured. All of these characteristics were affected by water stress; however, grain yield showed the largest relative reduction. Comparison of the various genotypes showed that some hybrids had an acceptable grain yield under water stress, and maintained a high average yield compared to growth without stress. Several hybrids gave better grain yield than commercial check

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“…Genotypes Identification for water stress tolerance at grain filling stage for higher production is very necessary for crop breeding (Menezes et al, 2014). Various previous investigations revealed that, the advantage of these indices for classified genotypes with more stable of productivity under water-limited conditions (Golabadi et al, 2006).…”

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confidence: 99%

Evaluation of maize hybrids to terminal drought stress tolerance by defining drought indices

Barutçular¹,

Sabagh²,

Konuşkan³

et al. 2016

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Terminal drought stress is one of the most important environmental stress factors which can cause a significant reduction in maize productivity. Therefore, to identify the best selection indices for drought tolerance in maize under terminal drought conditions, this research was conducted in two field experiments with some maize hybrids in two cropping seasons (2014 and 2015) under two moisture levels (normal irrigation and water deficit-water stress) at grain filling stage. Results of study revealed that, yield and major yield traits of hybrids adversely affected due to terminal drought stress, it also causing a reduction in productivity with compare normal irrigation conditions. Water stress significantly affected on maize hybrids and there were high variation among hybrids, which could be befits for screening the genotypes. The special attention was paid to hybrids 71May69, Aaccel and Calgary were showed less reduction of grain yield under terminal drought stress. Concerning the genotypes with high stress susceptibility index (SSI) and tolerance index (TOL) were considered as high susceptible to drought and only suitable for irrigated conditions. Accordingly, the positive relationship between stress indices, drought resistance index (DRI) , geometric mean productivity (GMP) , harmonic mean (HM), mean production (MP), stress tolerance index (STI) and Yield index (YI) , and grain yield could be used as the best selection indices for identifying the tolerant hybrids under terminal drought stress.

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Selection indices to identify drought-tolerant grain sorghum cultivars

Cited by 32 publications

References 22 publications

Salt tolerance assessment of barley (Hordeum vulgare L.) genotypes at germination stage by tolerance indices

Salt tolerance assessment of barley (Hordeum vulgare L.) genotypes at germination stage by tolerance indices

Evaluation of grain yield in sorghum hybrids under water stress

Evaluation of maize hybrids to terminal drought stress tolerance by defining drought indices

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