Water deficit stress tolerance assessment in barley cultivars using drought tolerance indices

Abstract Crop productivity is greatly affected by drought stress. Understanding the drought tolerance capability of the crop varieties available in a country is the foremost consideration for drought adaptation. The objective of this research work was to examine the drought tolerance potentiality of 5 cultivated barley varieties (BARI Barley5, BARI Barley6, BARI Barley7, BARI Barley8 and BARI Barley9) through calculating drought tolerance indices. A completely randomized design (CRD) with three replications was followed in the experiment, where crops were grown under control (80% of FC) and water deficit environment (50% of FC). Stress Tolerance (TOL), Mean Productivity (MP), Geometric Mean Productivity (GMP), Stress Susceptibility Index (SSI), Stress Tolerance Index (STI), Harmonic Mean (HAM), Yield Index (YI) and Yield Stability Index (YSI) were calculated based on grain yield under control and drought conditions. BARI Barley7 and BARI Barley8 were the most tolerant variety and BARI Barley9 considered as susceptible based on TOL and SSI. Drought tolerance indices like MP, HAM, GMP, TOL as well as STI were showed a high correlation with grain yield under both conditions and were recognized as appropriate indices to identify varieties with high grain yield and low sensitivity to drought stress.

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Evaluation and comparison of drought tolerance in some wild diploid populations, tetraploid and hexaploid cultivars of wheat using stress tolerance indices

Acta agriculturae Slovenica ◽

10.14720/aas.2020.115.1.1336 ◽

2020 ◽

Vol 115 (1) ◽

pp. 105

Author(s):

Sara KHOSRAVI ◽

Reza AZIZINEZHAD ◽

Amin BAGHIZADEH ◽

Mahmood MALEKI

Keyword(s):

Drought Stress ◽

Drought Tolerance ◽

Grain Yield ◽

Stress Tolerance ◽

Block Design ◽

Geometric Mean ◽

Tolerance Index ◽

Wheat Genotypes ◽

Drought Tolerance Indices ◽

Tolerance Indices

This study was carried out on grain yield in wheat genotypes with the aim of assessing genetic potential of drought tolerance. The experiment was performed as split plot in the form of randomized complete block design with three replications under normal and drought stress conditions with 32 genotypes. Based on grain yield, and under the condition of non-stress and drought stress, 5 drought tolerance indices are estimated including Tolerance Index (TOL), Stress Tolerance (STI), Mean Productivity (MP), Geometric Mean (GMP) and, Harmonic Mean (HM) for all kinds of genotypes. The analysis of yield correlation and drought tolerance indices in two environments indicated that STI, MP, GMP, HM indices were the most suitable parameters for screening wheat genotypes. Principal components analysis exhibited that the 83 % of first principal component and the 15 % of second one justified the variation of the initial data. Drawing bi-plot diagram declared that Sabalan, Shabrang, Aria, Azar, Azadi, and T2 genotypes were highly functional and resistant to drought stress.

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Evaluation of a Hexaploid Wheat Collection (Triticum aestivum L.) under Drought Stress Conditions Using Stress Tolerance Indices

Annual Research & Review in Biology ◽

10.9734/arrb/2019/v34i630168 ◽

2020 ◽

pp. 1-10

Author(s):

Alireza Daneshvar Hosseini ◽

Ali Dadkhodaie ◽

Bahram Heidari ◽

Seyed Abdolreza Kazemeini

Keyword(s):

Drought Stress ◽

Grain Yield ◽

Stress Tolerance ◽

Geometric Mean ◽

Triticum Aestivum L ◽

Stress Conditions ◽

Tolerance Index ◽

Highly Correlated ◽

Drought Tolerance Indices ◽

Tolerance Indices

Wheat is the most important crop in the world which faces the global problem of drought. Its production is affected by water deficit after pollination in arid and semi-arid regions. An experiment was conducted to assess tolerance of 39 bread wheat genotypes to end-season drought. The experimental design was Randomized Complete Block in three replications and the drought tolerance indices (SSI, STI, TOL, MP and GMP) were calculated for grain yield. The cultivar Cambin produced the highest grain yield under normal irrigation by 369.19 g m-2 while Arina had the highest yield (223.35 g m-2) under drought stress conditions. Stress tolerance (TOL) introduced Hindukesh, Iran2355 and Iran6476 as drought tolerant genotypes. Also, results showed that grain yield under stress and non-stress environments were highly correlated with the mean productivity (MP), the geometric mean productivity (GMP) and tolerance index (TOL). These genotypes could be further used in crosses for genetic studies and breeding programs for improvement tolerance to drought.

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Evaluation of drought tolerance in corn (Zea mays L.) new hybrids with using stress tolerance indices

European Journal of Sustainable Development ◽

10.14207/ejsd.2012.v1n3p543 ◽

2012 ◽

Vol 1 (3) ◽

pp. 543 ◽

Cited By ~ 4

Author(s):

H. Moradi ◽

G A. Akbari ◽

S. Khavari Khorasani ◽

H A. Ramshini

Keyword(s):

Drought Stress ◽

Drought Tolerance ◽

Stress Tolerance ◽

Block Design ◽

Geometric Mean ◽

Weather Condition ◽

Tolerance Index ◽

Drought Tolerance Indices ◽

Stress Susceptibility ◽

Tolerance Indices

In order to study the effect of drought stress on morphophysiologic characteristics,yield and yield components of 8 new hybrids of corn (Zea maize L.) and KSC704commercial hybrid as control resistant to drought and warm (which were bred andscreened in Khozestan province condition), an experiment was conducted in aRandomized Complete Block Design (RCBD) with three replications underdrought stress and normal irrigation at Khorasan-Razavi Agriculture ResearchCenter, Mashhad, Iran on June 10, 2011. The results of analyze variance showedthat under normal irrigation and drought condition, there was a significantdifference (p<0.01) between the hybrids. Mean comparison of hybrids revealedthat in normal irrigation H6 and in drought stress H8 hybrid had the maximumgrain yield (12.85 and 6.75 ton/ha, respectively). Based on the grain yields ofstudied hybrids, stress tolerance index (STI), stress susceptibility index (SSI),tolerance index (TOI), mean productivity (MP), geometric mean productivity(GMP), harmonic mean (HM) and golden mean (GM) were estimated. Resultsshowed that among drought tolerance indices, MP, GMP, STI and HM were thebest indices for corn and KSC704 hybrid and H4 had the highest tolerance todrought in Mashhad weather condition.

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Discrimination of drought tolerance in a worldwide collection of safflower (Carthamus tinctorius L.) genotypes based on selection indices

Acta agriculturae Slovenica ◽

10.14720/aas.2021.117.1.1656 ◽

2021 ◽

Vol 117 (1) ◽

pp. 1

Author(s):

Pooran GOLKAR ◽

Esmaeil HAMZEH ◽

Seyed Ali Mohammad MIRMOHAMMADY MAIBODY

Keyword(s):

Drought Stress ◽

Drought Tolerance ◽

Geometric Mean ◽

Resistance Index ◽

Stability Index ◽

Carthamus Tinctorius ◽

Tolerance Index ◽

Breeding Programs ◽

Drought Tolerance Indices ◽

Tolerance Indices

Improvement of elite safflower genotypes for drought-tolerance is hampered by a deficiency of effective selection criteria. The present study evaluated 100 genotypes of safflower in terms of their drought tolerance over a period of three years (2016–2018) under both non-stress and drought-stress conditions. The eight drought-tolerance indices of tolerance index (TOL), mean productivity (MP), geometric mean productivity (GMP), stress susceptibility index (SSI), stress tolerance index (STI), yield stability index (YSI), drought resistance index (DI), and harmonic mean (HARM) were calculated based on seed yield under drought (Ys) and non-drought (Yp) conditions. A high genetic variation was found in drought tolerance among the genotypes studied. The MP, GMP, and STI indices were able to discriminate between tolerant and drought-sensitive genotypes. Plots of the first and second principal components identified drought-tolerant genotypes averaged over the three study years. Cluster analysis divided the genotypes into three distinct groups using the drought tolerance indices. Ultimately, eight genotypes (namely, G3, G11, G13, G24, G33, G47, G58, and G61) from different origins were detected as more tolerant to drought stress suitable for use in safflower breeding programs in drought-affected areas. The most tolerant and susceptible genotypes could be exploited to produce mapping populations for drought tolerance breeding programs in safflower.

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Physiological Screening for Drought Tolerance Traits in Vegetable Amaranth (Amaranthus tricolor) Germplasm

Agriculture ◽

10.3390/agriculture11100994 ◽

2021 ◽

Vol 11 (10) ◽

pp. 994

Author(s):

Norain Jamalluddin ◽

Festo J. Massawe ◽

Sean Mayes ◽

Wai Kuan Ho ◽

Ajit Singh ◽

...

Keyword(s):

Drought Stress ◽

Drought Tolerance ◽

Geometric Mean ◽

Tolerance Index ◽

Genotypic Differences ◽

Amaranthus Tricolor ◽

Drought Tolerant ◽

Drought Tolerance Indices ◽

Tolerance Indices ◽

Screening Trials

Amaranth (Amaranthus tricolor), an underutilized climate smart crop, is highly nutritious and possesses diverse drought tolerance traits, making it an ideal crop to thrive in a rapidly changing climate. Despite considerable studies on the growth and physiology of plants subjected to drought stress, a precise trait phenotyping strategy for drought tolerance in vegetable amaranth is still not well documented. In this study, two drought screening trials were carried out on 44 A. tricolor accessions in order to identify potential drought-tolerant A. tricolor germplasm and to discern their physiological responses to drought stress. The findings revealed that a change in stem biomass was most likely the main mechanism of drought adaptation for stress recovery, and dark-adapted quantum yield (Fv/Fm) could be a useful parameter for identifying drought tolerance in amaranth. Three drought tolerance indices: geometric mean productivity (GMP), mean productivity (MP) and stress tolerance index (STI) identified eight drought-tolerant accessions with stable performance across the two screening trials. The highly significant genotypic differences observed in several physiological traits among the amaranth accessions indicate that the amaranth panel used in this study could be a rich source of genetic diversity for breeding purposes for drought tolerance traits.

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Evaluation of durum wheat genotypes based on drought tolerance indices under different levels of drought stress

Journal of Agricultural Sciences Belgrade ◽

10.2298/jas1701001m ◽

2017 ◽

Vol 62 (1) ◽

pp. 1-14 ◽

Cited By ~ 1

Author(s):

Reza Mohammadi ◽

Abdolvahab Abdulahi

Keyword(s):

Drought Stress ◽

Drought Tolerance ◽

Durum Wheat ◽

Geometric Mean ◽

Tolerance Index ◽

Wheat Genotypes ◽

Drought Conditions ◽

Drought Tolerance Indices ◽

Tolerance Indices ◽

Different Levels

Objectives of this study were to assess durum wheat genotypes for drought tolerance and to study relationships among different drought tolerance indices under different drought stress conditions. The total of twenty-two durum wheat lines was evaluated in a RCBD experiment with three replications for three cropping seasons (2008-2009; 2009-2010 and 2010-2011). Different drought indices such as tolerance (TOL), mean productivity (MP), mean relative performance (MRP), stress susceptibility index (SSI), modified severity stress index (SSSI), geometric mean productivity (GMP), stress tolerance index (STI), yield stability index (YSI), relative efficiency index (REI) and drought response index (DRI) were determined based on yields under drought and non-drought conditions. The studied genotypes showed considerable variation in performance and tolerated various drought conditions that could be exploited in the durum wheat breeding program. The screening of genotypes for drought tolerance in environments with a greater value of stress intensity (SI) will be more efficient in the grouping of indices and genotype selection. The indices were classified into groups (G1 and G2). The group G1, which consisted of the indices REI, STI, MRP, GMP, DRI and YSI, distinguished genotypes with higher yield in different levels of drought stress. The durum breeding line nos. 1, 11, 10, 13, 8, 9, and 12 were superior based on the group G1 and could be regarded for further evaluation in drought-prone environments.

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Assessing Genetic Diversity of Rice Varieties under Drought Stress Conditions

Notulae Scientia Biologicae ◽

10.15835/nsb315618 ◽

2011 ◽

Vol 3 (1) ◽

pp. 114-123 ◽

Cited By ~ 11

Author(s):

Mina ABARSHAHR ◽

Babak RABIEI ◽

Habibollah SAMIZADEH LAHIGI

Keyword(s):

Drought Stress ◽

Grain Yield ◽

Stress Tolerance ◽

Geometric Mean ◽

Minimum Variance ◽

Stress Conditions ◽

Productivity Index ◽

Stress Index ◽

Tolerance Index ◽

Rice Varieties

In order to compare different rice genotypes grown under drought stress conditions a field experiment was conducted. In this study thirty different genotypes of native, breeded and upland cultivars were evaluated. Analysis of variance showed significant differences among genotypes in respect of all vegetative and morphological traits. Genotypes were devided into three groups by cluster analysis based on all studied traits with minimum variance method (Wards Method). The total average indicates significant differences among groups in respect of all morphological and physiological characteristics. In addition, eight drought stress tolerance indices including: sensitivity to stress index (SSI), drought response index (DRI), relative drought index (RDI), tolerance index (TOL), mean productivity index (MP), stress tolerance index (STI), geometric mean productivity index (GMP) and harmonic mean index (HM) were calculated according to their grain yield under drought stress and normal conditions. In general, results of this experimnet revealed that, among rice cultivars Domsephid, Deylamany, Hasansaraei, Sadri, Anbarboo and Domsiah had the highest sensitivity referring to drought stress and produced the lowest grain yield. Also, genotypes of IR24 (breeded of IRRI), Nemat, Sephidroud, Kadoos and Bejar (breeded of Iran) and Vandana, upland cultivar (originally from India) had the highest tolerance to drought stress and produced the highest grain yield. In conclusion, it was suggested that, these cultivars are suitable for drought stress conditions and are appropriate for hybridization with the aim of increasing drought tolerance.

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Evaluation of Barley Genotypes (Hordeum vulgar l.) by drought tolerance indices and Multivariate analysis

Journal of Bio-Science ◽

10.3329/jbs.v21i0.22525 ◽

2015 ◽

Vol 21 ◽

pp. 109-122 ◽

Cited By ~ 2

Author(s):

Soran Sharafi ◽

Kazem Ghassemi Golezani ◽

Soleyman Mohammadi ◽

Shahram Lak ◽

Behzad Sorkhy

Keyword(s):

Cluster Analysis ◽

Drought Stress ◽

Drought Tolerance ◽

Water Deficit ◽

Seed Yield ◽

Correlation Coefficients ◽

Components Analysis ◽

Drought Tolerance Indices ◽

Tolerance Indices ◽

Barley Genotypes

Context: Evaluation of tolerance of different barley genotypes to drought stress, an experiment carried out in randomized block design (RCBD) with three replication during 2009-2010 growing seasons and 20 barley genotypes were studied in normal and water deficit in post anthesis stage conditions at the Saatloo Research Farm Azerbaiejan, Iran. Results: The result of variance analysis showed that there were highly significant differences between genotypes in all of the studied traits, also it was cleared that all of traits except spike length reduced in water deficit condition as compared to normal condition and seed yield, biomass and 1000 seed weight traits had the most reduction (31, 25 and 20 percent, respectively). To identify of tolerance barley genotypes to drought stress, drought tolerance indices (STI, TOL, SSI, MP, HM and GMP), correlation coefficients, principal components analysis and cluster analysis were used. The result of correlation coefficients indicated that there were significant and positive correlation between seed yield in normal and stress conditions and drought tolerance indices. Also the result of principal components analysis showed that two components justified 99% of total variations. MP, GMP, STI and HM indices and TOL and SSI indices had the most coefficients in the first and second component, respectively, so are named tolerance and sensitivity component, respectively. Conclusion: MP, HM, STI and GMP indices were appropriate indices to select of drought tolerance barley genotypes. On the other hand, the result of cluster analysis showed that 13, 14 and 7 genotypes and 18, 1 and 2 genotypes were tolerance and sensitivity genotypes to water deficit at post anthesis stage. DOI: http://dx.doi.org/10.3329/jbs.v21i0.22525 J. bio-sci. 21: 109-122, 2013

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Evaluation of Drought Tolerance Indices and Nitrogen Fertilization for Some Groundnut (Arachis Hypogaea L.) Genotypes

Agricultural Science ◽

10.30560/as.v1n1p18 ◽

2019 ◽

Vol 1 (1) ◽

pp. p18

Author(s):

Iancu Paula ◽

Păniță Ovidiu ◽

Soare Marin

Keyword(s):

Drought Tolerance ◽

Seed Yield ◽

Block Design ◽

Geometric Mean ◽

Influence Factors ◽

Stability Index ◽

Tolerance Index ◽

Active Nitrogen ◽

Drought Tolerance Indices ◽

Tolerance Indices

Water is essential to maximize crop yield and quality. This natural resource has assumed huge importance, especially in the warmest areas, where drought and environmental degradation has affected agricultural production. In order to identify drought tolerance of some groundnut genotypes and to investigate the relationships between seed yield, quality and drought tolerance indices a study was made using 10 promising genotypes. The experiment was carried out during 2014-2017 and sowed under randomized block design with four replicates. It included three factors: two levels of irrigation (a1 – non - irrigated and a2 - irrigated), two levels of fertilization (b1 – non-fertilized and b2 - 100 active Nitrogen/ha) and genotype (C1-C10). Seed yield depending on the influence of the factor, varied from 535.95 Kg/ha (non-irrigated) to 2020.95 Kg/ha (irrigated); from 1055.30 Kg/ha (non-fertilized) to 1501 Kg/ha (fertilized) and from 1111.30 Kg/ha to 1388 Kg/ha depending on genotype. Same influence factors for protein content varied from 25.65% (irrigated) to 28.61% (non-irrigated); from 26.33% (non-fertilized) to 27.93% (fertilized) and from 25.59% to 28.52% depending on genotype. Stress susceptibility index (SSI) varied from 0.964 to 1.040; Stress Tolerance Index (STI) from 0.138 to 0.435; Mean Productivity (MP) from 883.5 to 1616.0; Geometric Mean Productivity (GMP) from 750.3 to 1332.7; Tolerance index (TOL) from 933.0 to 1844.0; Harmonic Mean (HM) from 637.2 to 1099.0; Yield Index (YI) 0.777 to 1.308 and Yield Stability Index (YSI) from 0.236 to 0.309. High values of SSI, STI, YI, DI, RDI and SSPI indicate drought tolerance and those variants present high stability.

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Evaluation of Drought Tolerance Indices for Screening Some of Corn (Zea mays L.) Cultivars under Environmental Conditions

Notulae Scientia Biologicae ◽

10.15835/nsb539049 ◽

2013 ◽

Vol 5 (3) ◽

pp. 388-393 ◽

Cited By ~ 20

Author(s):

Mohhamad Reza NAGHAVI ◽

Alireza POUR ABOUGHADAREH ◽

Marouf KHALILI

Keyword(s):

Zea Mays ◽

Drought Tolerance ◽

Stress Tolerance ◽

Zea Mays L ◽

Stress Conditions ◽

Tolerance Index ◽

Drought Tolerant ◽

Drought Tolerance Indices ◽

Stress Susceptibility ◽

Tolerance Indices

In order to study the effect of drought stress on eight cultivars corn (Zea mays L.), an experiment was conducted in a factorial experimental on the basis of randomized complete block design under two irrigated conditions during 2010-2011 cropping season. Twelve drought tolerance/resistance indices including stress tolerance index (STI), stress susceptibility index (SSI), tolerance index (TOL), geometric mean production (GMP), mean production (MP), yield index (YI), yield stability index (YSI), drought resistance index (DI), relative drought index (RDI), stress susceptibility percentage index (SSPI) and modified stress tolerance (K1STI and K2STI) were calculated based on grain yield under drought and irrigated conditions. Yield in stress and non-stress conditions were significantly and positively correlated with STI, GMP, MP, YI, TOL, DI, RDI, YSI, SSPI, K1STI, and K2STI and negatively correlated with SSI. Yield in stress and non-stress conditions were significantly and positively correlated with STI, GMP, MP, YI, TOL, DI, RDI, YSI, SSPI, K1STI, and K2STI and negatively correlated with SSI. Screening drought tolerant cultivars using ranking method, three dimensional plots discriminated cultivars ‘KSC720’, KSC 710GT and ‘KSC 700’ as the most drought tolerant. Cluster analysis classified the cultivars into three groups i.e., tolerant, susceptible and semi-susceptible to drought conditions. In general, Results of this study showed that among drought tolerance indices STI, YI, SSPI, K1STI, and K2STI can be used as the most suitable indicators for screening drought tolerant cultivars and ‘KSC720’, KSC 710 GT and ‘KSC 700’ had the highest tolerance to drought in our studies condition.

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