Study of Drought Tolerance of Some Durum Wheat (Triticum durum Desf.) Genotypes Growing under Semi-arid Conditions in Algeria

The aim of this study was to test the behavior of 5 genotypes cultivated in normal and irrigated conditions with regard to drought stress. We used seven indices of tolerance and resistance to drought stress. Analyze of variance showed that the geometric mean productivity, mean productivity, stress tolerance index, yield stability index, stress sensitivity tolerance and tolerance intensity were effective in judging tolerance to water stress, Boussellem and Oum Rabie was the best at water stress resistance genotypes. Correlation analysis showed that GMP is both an indicator of high performance under both conditions and of resistance to stress (r=0.56* in a stress state and r=0.82*** in a non-stress state) . Boussellem and Oum Rabie were the strongest in yield and the most adapted to water stress thanks to their values for this index (8.84 and 9.06 respectively). SSI testified to the high yield in non-stress condition (r=0.82***), therefore Ofanto was a good cultivar in non-stess condition. PCA classified the genotypes Bousselem and Oum Rabie on the first component which combined the performance in yield under both conditions with the mean productivity, geometric mean productivity, and stress tolerance index. In conclusion, the Oum Rabie and Bousselem genotypes were the best performing under both conditions and the best adapted to drought stress, while Ofanto was a good cultivar in non-stress conditions. MP, GMP and STI indices was the best to judge the adaptability of our genotypes to drought stress.

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Evaluation of Some Sugar Beet Genotypes Under Drought Stress Based on Selection Indices

Journal of Agronomy Research ◽

10.14302/issn.2639-3166.jar-18-2083 ◽

2018 ◽

Vol 1 (1) ◽

pp. 34-48 ◽

Cited By ~ 1

Author(s):

Salah A. Okasha ◽

Mohamed H. Mubarak

Keyword(s):

Water Stress ◽

Drought Stress ◽

Sugar Beet ◽

Stress Tolerance ◽

Drought Index ◽

Block Design ◽

Geometric Mean ◽

P Value ◽

Tolerance Index ◽

Sensitivity Index

This study was conducted to determine drought tolerant indices of some sugar beet genotypes under water stress and non-stress conditions. Nine sugar beet (Beta Vulgaris L.) genotypes were tested in a Split-plot experiment based on a randomized complete block design in three replications under three levels of water stress 100%, 75% and 50% from plant requirements at the experimental farm Faculty of Agriculture, Suez Canal University, Ismailia, Egypt during 2015/ 2016 and 2016 / 2017 seasons. Twelve drought tolerance indices were used in this study, stress sensitivity index (SSI), stress tolerance (TOL), mean productivity (MP), geometric mean (GMP), harmonic mean (HM),yield stability index (YSI), yield index (YI), stress tolerance index (STI), sensitivity drought index (SDI), relative drought index (RDI), drought response index (DI) and stress susceptibility percentage index (SSPI). GMP, MP and STI were more informative towards classification of better or superior genotypes with respect to tolerant and sensitive groups. The results showed that the genotypes with high STI, GMP and MP values were suitable for cultivation under drought stress and non-stress environments. Both Yp and Ys of root yield in the control-50% analysis had significantly positive correlated (P value<0.05) with MP, GMP, YI, HM and DI, This indicates that these indices were more effective in identifying high yielding genotypes under drought stress as well as non-stress conditions.Principal components analysis showed that the first two components in the control-50% analysis, genotype Bts 1237 and Temar were identified as the most stable high yielding genotypes in both environments

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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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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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Yield and yield traits of durum wheat (Triticum durum desf.) and bread wheat (Triticum aestivum L.) genotypes under drought stress

Genetika ◽

10.2298/gensr1602717a ◽

2016 ◽

Vol 48 (2) ◽

pp. 717-727

Author(s):

Tofig Allahverdiyev

Keyword(s):

Water Stress ◽

Drought Stress ◽

Durum Wheat ◽

Bread Wheat ◽

Geometric Mean ◽

Triticum Aestivum L ◽

Tolerance Index ◽

Yield Traits ◽

Wheat Genotypes ◽

Spike Number

Field experiment was conducted to study the effect of water stress on yield and yield traits of durum wheat and bread wheat genotypes. Water stress caused significant reduction in plant height (PH), peduncle length (PL), spike number/m2(SN), spike length (SL), spike width (SW), spikelets number/spike (SNS), spike mass (SM), grain number/spike (GNS), grain mass/spike (GMS), biological yield (BY), thousand kernel mass (TKM), grain yield (GY) and harvest index (HI). Wheat traits such as SN, SM, BY, TKM, GY were more vulnerable to drought stress. Positive significant correlation of GY with SN, BY and HI under rain-fed condition was found. Genotypes of durum wheat were more sensitive to drought than that bread wheat genotypes. The significant and positive correlation of GY with Stress Tolerance Index (STI), Mean Productivity (MP) and Geometric Mean Productivity (GMP) indicated that these indices were more effective in identifying high yielding, drought tolerance genotypes.

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

10.21203/rs.3.rs-1088066/v1 ◽

2021 ◽

Author(s):

Md Habib ◽

Md Mannan ◽

Md Karim ◽

Md Miah ◽

Hari Singh

Keyword(s):

Drought Stress ◽

Drought Tolerance ◽

Grain Yield ◽

Stress Tolerance ◽

Water Deficit ◽

Geometric Mean ◽

Research Work ◽

Tolerance Index ◽

Drought Tolerance Indices ◽

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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TIR approach and stress tolerance indices to identify donor for high-temperature stress tolerance in pepper (Capsicum annuum L.)

Plant Genetic Resources ◽

10.1017/s147926211900042x ◽

2020 ◽

Vol 18 (1) ◽

pp. 19-27

Author(s):

Smaranika Mishra ◽

R. H. Laxman ◽

K. Madhavi Reddy ◽

R. Venugopalan

Keyword(s):

High Temperature ◽

Stress Tolerance ◽

Capsicum Annuum ◽

Temperature Stress ◽

Geometric Mean ◽

Stability Index ◽

High Temperature Stress ◽

Bell Pepper ◽

Tolerance Index ◽

Tolerance Indices

AbstractBell pepper or sweet pepper (Capsicum annuum L. var. grossum) is highly susceptible to high-temperature stress (HT). Hence, search for donor across C. annuum for HT tolerance was undertaken by following Temperature Induction Response (TIR) technique. The induction and challenging temperature requirement for TIR screening were standardized in 1 d-old Capsicum seedlings. Forty Capsicum genotypes were evaluated based on the recovery growth (RG) and per cent reduction in recovery growth (%RRG) of the seedlings. The genotypes Punjab Guchhedar and Ajeet 1 were found to have maximum cellular level tolerance (CLT) to HT with higher RG and lower %RRG compared to the non-induced seedlings and HDC 75 was found to have minimum CLT. In order to confirm the findings, another experiment was conducted under managed stress and control conditions. Absolute yield obtained from both the environments were used to calculate stress tolerance indices such as heat susceptibility index, tolerance index, stress tolerance index, mean productivity, geometric mean productivity and yield stability index. Based on these tolerance indices, Punjab Guchhedar and Ajeet 1 were found to be highly tolerant and HDC 75 as highly susceptible. Further, the combined result of TIR and tolerance indices also gave the same result confirming Punjab Guchhedar and Ajeet 1 can be used as a donor for the future breeding programme aimed at evolving high-temperature-tolerant bell pepper cultivars. The result also confirms the fitness of TIR technique to screen Capsicum genotypes for tolerance to HT based on variability in acquired thermotolerance.

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Effect of Drought Stress on Growth and Yield of Wheat Genotypes

Bangladesh Agronomy Journal ◽

10.3329/baj.v20i2.37093 ◽

2018 ◽

Vol 20 (2) ◽

pp. 97-105

Author(s):

Afrose Jahan ◽

F Ahmed

Keyword(s):

Drought Stress ◽

Geometric Mean ◽

Relative Yield ◽

Stability Index ◽

Research Field ◽

Growth And Yield ◽

Yield Reduction ◽

Tolerance Index ◽

Wheat Genotypes ◽

Drought Tolerance Indices

A pot experiment on screening of wheat genotypes against drought stress was conducted at the research field of Sher-e-Bangla Agricultural University in earthen pots during rabi season of 2013-2014. Fifteen (15) wheat genotypes were evaluated under drought (stress was imposed by withdrawing irrigation after emergence) and well irrigated (control) condition. Exposure of plants to drought led to remarkable reduction in yield contributing characters which ultimate caused in reduced yield in all the genotypes. However, genotypes showed remarkable variability in yield reduction due to drought. The highest relative yield was observed in genotype SATYN-25 followed by SATYN-2, BARI Gom-26 and BARI Gom-28. However, yield reduction was less in SATYN-25 (about 20%) followed by BARI Gom-26 (21%) and SATYN-2 (25%). Besides yield performance of the genotypes, some drought tolerance indices like Geometric Mean Productivity (GMP), Stress Tolerance Index (STI), Yield Stability Index (YSI) and Stress Susceptible Index (SSI) were used to select the desirable genotypes. Among the genotypes, BARI Gom-26, BARI Gom-28 and SATYN-25 gave better yield with higher STI, GMP and YSI with lower SSI indicating that these genotypes would be suitable for growing under drought prone areas.Bangladesh Agron. J. 2017, 20(2): 97-105

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Seleksi dan indeks sensitivitas cekaman kekeringan galur-galur padi sawah tadah hujan

Jurnal Agro ◽

10.15575/3654 ◽

2020 ◽

Vol 7 (1) ◽

pp. 71-81

Author(s):

Wage Ratna Rohaeni ◽

Untung Susanto

Keyword(s):

Drought Stress ◽

Block Design ◽

Stress Sensitivity ◽

Rice Fields ◽

High Yield ◽

Tolerance Index ◽

Sensitivity Index ◽

Rainfed Rice ◽

Drought Tolerant ◽

Randomized Block Design

Cekaman kekeringan hampir terjadi setiap tahun pada sawah tadah hujan. Salah satu teknologi untuk mengatasinya adalah dengan penanaman padi toleran kekeringan. Perakitan varietas toleran kekeringan terus dilakukan dengan mengevaluasi galur-galur yang ditujukan untuk stress kekeringan. Penelitian ini bertujuan untuk menyeleksi, mengevaluasi penurunan hasil, dan mengetahui indeks sensitivitas cekaman kekeringan pada galur-galur tadah hujan hasil seleksi generasi lanjut. Percobaan seleksi cekaman kekeringan dilakukan pada Maret – November 2016 dengan materi genetik sebanyak 135 galur dan Cek Mekongga yang ditanam pada kondisi stress kekeringan (61-72 centibar/Kpa) dan evaluasi galur – galur terseleksi dilakukan pada Februari – Juli 2017 dengan menggunakan rancangan acak kelompok 3 ulangan. Hasil kegiatan seleksi memperoleh sebanyak 19 galur terbaik memiliki toleransi terhadap stres kekeringan untuk dilanjutkan pada kegiatan evaluasi lebih lanjut di kondisi sawah tadah hujan kondisi optimum. Hasil penelitian evaluasi 19 galur menunjukkan sebanyak 4 galur toleran yaitu BP17586-2-0-JK-3-IND-2-SKI-10-PWK-1-SKI-2 (ISK 0.49), BP18354-1-2-JK-3-IND-1-SKI-3-PWK-1-SKI-1 (ISK 0.49), BP18360-2-3-JK-1-IND-1-SKI-7-PWK-2SKI-1 (ISK 0.16), dan BP18406c-JK-1-IND-0-SKI-3-PWK-2-SKI-1 (ISK 0.1). Galur BP18354-1-2-JK-3-IND-1-SKI-3-PWK-1-SKI-1 (Y = 4,77 ton ha-1) adalah galur terbaik yang memiliki potensi hasil tinggi lebih baik dari cek Inpari 38 Tadah Hujan dan memiliki toleransi terhadap cekaman kekeringan. Galur ini potensial untuk diuji lebih lanjut dan dikembangkan di sawah tadah hujan. ABSTRACTDrought stress almost occurs every year in rainfed rice fields. One of the technologies to overcome is by planting drought tolerant varieties rice. Therefore, the assembly of drought tolerant varieties is carried out continuously by evaluating lines intended for drought stress. This study aimed to select, evaluate the decline in yield, and determine the drought tolerance index of rainfed lines resulting from advanced generation selection. Study-1 of drought stress selection experiment was carried out in WS 1 2016 (March – November) with 135 genetic lines and Mekongga as susceptible checks and Inpari 38 as resistant check planted in drought stress conditions (61-72 centibar / Kpa), and study-2 was an evaluation of selected strains carried out in WS 1 2017 (February – July) with 19 selected lines and 3 checks (Mekongga and Ciherang as susceptible check and Inpari 38 as resistant checks) by using a randomized block design with 3 replications. The results of the selection activities (Study-1) obtained as many as 19 of the best lines which had tolerance to drought stress and these lines were continued in further evaluation activities in rainfed lowland with optimum conditions (Study-2). The results showed that 4 of 19 lines were tolerant namely BP17586-2-0-JK-3-IND-2-SKI-10-PWK-1-SKI-2 (DSI - drought stress sensitivity index = 0.49), BP18354-1 -2-JK-3-IND-1-SKI-3-PWK-1-SKI-1 (DSI 0.49), BP18360-2-3-JK-1-IND-1-SKI-7-PWK-2SKI-1 (DSI 0.16), and BP18406c-JK-1-IND-0-SKI-3-PWK-2-SKI-1 (DSI 0.1). The BP18354-1-2-JK-3-IND-1-SKI-3-PWK-1-SKI-1 (Y = 4.77 tons ha-1) line was the best strain that had the potential for high yield better than the Inpari 38 Rainfed Check and had tolerance to stress. This strain has the potential to be further tested and developed in rain-fed rice fields.

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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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