The Tolerance Index and Translocation Factor were Used to Identify the Barley Genotypes with High Arsenic Stress Tolerance

2018 ◽  
Vol 49 (1) ◽  
pp. 50-62 ◽  
Author(s):  
Gerald Zvobgo ◽  
Jonas Lwalaba Wa Lwalaba ◽  
Shafaque Sehar ◽  
James Mutemachani Mapodzeke ◽  
Imran Haider Shamsi ◽  
...  
Keyword(s):  
Stress Tolerance ◽  
Translocation Factor ◽  
Tolerance Index ◽  
Arsenic Stress ◽  
Barley Genotypes ◽  
High Arsenic

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

2016 ◽  
Vol 1 (1) ◽  
Author(s):  
Hossein Askari ◽  
Seiyed Kamal Kazemitabar ◽  
Hamid Najafi Zarrini ◽  
Mohammd Hossein Saberi
Keyword(s):  
Stress Tolerance ◽  
Geometric Mean ◽  
Germination Percentage ◽  
Tolerance Index ◽  
Hordeum Vulgare L ◽  
Randomized Design ◽  
Stress Susceptibility ◽  
Tolerance Indices ◽  
Barley Genotypes ◽  
Germination Stage

AbstractThis 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.

Transporters: the molecular drivers of arsenic stress tolerance in plants

2021 ◽  
Author(s):  
Thorny Chanu Thounaojam ◽  
Zesmin Khan ◽  
Thounaojam Thomas Meetei ◽  
Sudhakar Srivastava ◽  
Sanjib Kumar Panda ◽  
...  
Keyword(s):  
Stress Tolerance ◽  
Arsenic Stress

scholarly journals Canopy Temperature and Chlorophyll Content are Effective Measures of Drought Stress Tolerance in Durum Wheat

2018 ◽  
Vol 10 (4) ◽  
pp. 575-583 ◽  
Author(s):  
Fereshteh JOKAR ◽  
Rahmatollah KARIMIZADEH ◽  
Asad MASOUMIASL ◽  
Reza AMIRI FAHLIANI
Keyword(s):  
Drought Tolerance ◽  
Durum Wheat ◽  
Stress Tolerance ◽  
Chlorophyll Content ◽  
Geometric Mean ◽  
Canopy Temperature ◽  
Stress Conditions ◽  
Tolerance Index ◽  
Wheat Varieties ◽  
Drought Tolerant

Durum wheat (Triticum durum L.) is used for the preparation of multiple food products, including pasta and bread. Its production is restricted due to diverse environmental stresses i.e. drought and heat stress. Here, comparative analysis of durum wheat varieties was done by studying canopy temperature depression (CTD) and chlorophyll content (CHL), yield and yield contributing traits to evaluate their performance under stress and low stress conditions. Twelve durum wheat genotypes were studied under stressful and low-stress conditions in Gachsaran region of Iran. CTD and CHL were measured at two stages, from the emergence of fifty percent of inflorescence (ZGS 54) to watery ripe stage (ZGS 71). According to stress tolerance index (STI), mean productivity (MP) and geometric mean productivity (GMP) indices, genotype G10 exhibited the most, while genotype G6, the least relative tolerance, respectively. Based on MP and GMP, genotype G10 was found to be drought tolerant, while genotype G2 displayed the lowest amount of MP and GMP. Therefore these genotypes are recommended to be used as genitors in artificial hybridization for improvement of drought tolerance in other cultivars. All indices had high correlation with grain yield under stress and non-stress condition, indicating more suitability of these indices for selection of resistant genotype. Results of the present study showed that among drought tolerance indices, harmonic mean (HM), GMP, CTD and modified STI index (K2STI) can be used as the most suitable indicators for screening drought tolerant cultivars.

scholarly journals Assessing Genetic Diversity of Rice Varieties under Drought Stress Conditions

2011 ◽  
Vol 3 (1) ◽  
pp. 114-123 ◽  
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.

Modulation in arsenic-induced lipid catabolism in Glycine max using proline, 24-epibrassinolide and diphenylene iodonium

Biologia ◽  
2017 ◽  
Vol 72 (3) ◽  
Author(s):  
Vibhuti Chandrakar ◽  
Suruchi Parkhey ◽  
Amit Dubey ◽  
Sahu Keshavkant
Keyword(s):  
Abiotic Stress ◽  
Glycine Max ◽  
Stress Tolerance ◽  
Growth Regulation ◽  
Abiotic Stress Tolerance ◽  
The Novel ◽  
Lipid Catabolism ◽  
Diphenylene Iodonium ◽  
Arsenic Stress

AbstractProline, 24-epibrassinolide and diphenylene iodonium are few of the novel antioxidant molecules, involved in growth regulation and abiotic stress tolerance of plants. However, these are scarcely explored in relation to their role in arsenic stress tolerance. Therefore, present study was designed to investigate the involvement of proline, 24-epibrassinolide and diphenylene iodonium in conferring tolerance to

scholarly journals Pengaruh Bagian Organ dan Persentase Ekstrak Tanaman Kayu Putih (Melaleuca leucadendra L.) terhadap Perkecambahan Benih Jagung (Zea mays) dengan Metode Bioassay

2019 ◽  
Vol 4 (02) ◽  
pp. 28-30
Author(s):  
Syprianus Ceunfin
Keyword(s):  
Zea Mays ◽  
Stress Tolerance ◽  
Tolerance Index ◽  
Total Unit ◽  
Melaleuca Leucadendra

Produksi tanaman jagung akhir-akhir ini terus mengalami penurunan. Hal ini sebagai akibat dari pergeseran pemanfaatan lahan-lahan produktif menjadi lahan tidak produktif. Oleh karena itu, tumpangsari menjadi salah satu alternatif produksi bahan pangan. Lahan yang paling berpotensi untuk menanam tanaman pangan adalah hutan produksi berbasis kayu putih. Penelitian ini bertujuan untuk mengetahui pengaruh bagian organ dan persentase ekstrak tanaman kayu putih terhadap perkecambahan benih jagung dengan metode bioassay serta menentukan tingkat ketahanan kecambah terhadap alelopati. Penelitian dilaksanakan pada bulan Maret-Mei 2015 di Bangun Tapan, Bantul Yogyakarta. Rancangan yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap (RAL) Faktorial. Faktor pertama adalah bagian organ tanaman (E) yang digunakan sebagai ekstrak, terdiri dari 9 aras yaitu ekstrak akar zona 1, ekstrak akar zona 2, ekstrak kulit batang, ekstrak daun segar, ekstrak serasah daun, ekstrak akar zona 1 + ekstrak kulit batang + ekstrak daun segar + ekstrak serasah, ekstrak akar zona 2 + ekstrak kulit batang + ekstrak daun segar + ekstrak serasah, ekstrak kulit batang + ekstrak daun segar + ekstrak serasah, ekstrak daun segar + ekstrak serasah daun dan faktor kedua adalah konsentrasi ekstrak yang terdiri dari 6 level yaitu kontrol, ekstrak 20%, ekstrak 40%, ekstrak 60%, ekstrak 80%, ekstrak 100% dengan ukuran 10 mL. Terdapat 54 kombinasi perlakuan masing-masing diulang 3 kali sehingga total unit penelitian adalah 162 nampan. Variabel pengamatan dalam penelitian ini adalah menghitung vigor benih dan stress tolerance index pada vigor benih. Hasil penelitian menunjukkan bahwa tidak terjadi interaksi antara perlakuan bagian organ tanaman dan persentase ekstrak kayu putih terhadap perkecambahan benih jagung, seluruh bagian organ segar tanaman kayu putih pada berbagai konsentrasi mampu menghambat pertumbuhan dan perkembangan kecambah dan menempatkan kecambah jagung pada level moderat sampai rentan dalam pengelompokan stress tolerance index.

scholarly journals Drought Resistance Indices for Screening of Potato (Solanum tuberosum L.) Genotypes

2019 ◽  
Vol 7 (8) ◽  
pp. 1118
Author(s):  
Zerihun Kebede Beyene ◽  
Firew Mekbib ◽  
Tesfaye Abebe ◽  
Asrat Asfaw
Keyword(s):  
Stress Tolerance ◽  
Solanum Tuberosum L ◽  
Geometric Mean ◽  
Strong Association ◽  
Principal Component ◽  
Screening Tools ◽  
Tolerance Index ◽  
Lattice Design ◽  
Terminal Drought ◽  
Drought Tolerant

In breeding for drought tolerance, availability of precise, cheap and easy to apply selection tool is critical. The aim of the present study was to identify potential screening tools that are useful for selection of drought tolerant genotypes in potato and select drought resistant potato genotypes. The study assessed sixty clones arranged in a 10×6 alpha lattice design with two replicates in a managed stress experiment. Two irrigation treatments were applied: fully watered non-stress and terminal drought, where the irrigation water supply to the crop was withheld after 50 % flowering to induce post-flowering stress. Stress indices were calculated based on tuber yield of genotypes in both stressed and non-stressed conditions. Identification of drought tolerant genotypes based on a single index was less informative as different indices identified different genotypes as drought tolerant. Hence, to determine the most desirable drought tolerant clones rank sum of indices, correlation, and bi-plot display of the principal component analysis was employed. The indices modified stress tolerance index based on non-stressed yield, Men productivity, Geometric mean productivity, Stress tolerance index, Harmonic mean, modified stress tolerance index based on stressed yield and Yield index exhibited strong association with both yield under stressed and non-stressed yield. These indices discriminated drought tolerant genotypes with higher tuber yielding potential both under stress and non-stress conditions. Genotypes CIP-398180.612, CIP-397069.5, and CIP-304371.67 were identified as drought tolerant. These genotypes could be potentially grown both under drought prone and potential environments and these selection attributes could help to develop climate resilient potato varieties.

scholarly journals Changes in Plant Water Status, Biochemical Attributes and Seed Quality of Black Gram and Green Gram Genotypes under Drought

2015 ◽  
Vol 42 ◽  
pp. 1-12 ◽  
Author(s):  
B. Baroowa ◽  
N. Gogoi
Keyword(s):  
Stress Tolerance ◽  
Seed Quality ◽  
Block Design ◽  
Green Gram ◽  
Lower Percentage ◽  
Tolerance Index ◽  
Anthocyanin Content ◽  
Total Flavonoids ◽  
Black Gram ◽  
Area Index

Drought is one of the major abiotic stresses which adversely affect crop growth and production worldwide as water is vital for every aspect of plant growth and development. The present experiment was carried out during the growing seasons (September – December) of 2012 and 2013 to evaluate the response of black gram (Vigna mungo L.) and green gram (Vigna radiata L.) in terms of some important growth indices, biochemical traits and seed quality under drought stress. Four commonly grown genotypes - T9, KU 301(black gram) and Pratap, SG 21-5 (green gram) of Assam, India were grown in a randomized block design with three replications under stress and non-stress conditions. Stress was applied by withholding irrigation for fifteen consecutive days at vegetative, flowering and pod filling stages. Leaf area index (LAI), seed protein content and protein yield significantly decreased (p ≤ 0.01) whereas proline, total flavonoids and anthocyanin content increased significantly (p ≤ 0.01) in response to water deficiency. Among the studied genotypes, T9 and Pratap showed better tolerance capacity towards the applied drought by presenting higher values of LAI, plant height stress tolerance index (PHSI), dry matter stress tolerance index (DMSI), proline, total flavonoids, anthocyanin, lower percentage of chlorophyll degradation and finally producing high quality seeds.

scholarly journals EVALUATION OF DROUGHT TOLERANCE IN NEW COTTON CULTIVARS USING STRESS TOLERANCE INDICES

AGROFOR ◽  
2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Minka KOLEVA ◽  
Valentina DIMITROVA
Keyword(s):  
Stress Tolerance ◽  
Block Design ◽  
Geometric Mean ◽  
Moisture Stress ◽  
Yield Potential ◽  
Tolerance Index ◽  
Effective Selection ◽  
Stress Environment ◽  
Stress Susceptibility ◽  
Tolerance Indices

Drought is a wide-spread problem seriously influencing production and quality ofcotton (Gossypium hirsutum L.), but development of resistant cultivars is hamperedby the lack of effective selection criteria. The objective of this study was toevaluate the ability of several selection indices to identify drought tolerant cultivarsunder different environmental conditions. Thirteen cotton cultivars were evaluatedunder both moisture stress (2016) and non-stress (2013) field environments using arandomized complete block design for each environment. Six drought toleranceindices including stress susceptibility index (SSI), stress tolerance index (STI),tolerance index (TOL), mean productivity (MP), geometric mean productivity(GMP) and mean harmonic productivity (HMP) were used. The significant andpositive correlation of yield of genotype under non-stress condition (Yp) and MP,GMP and STI showed that these indices were more effective in identifying highyielding cultivars under different moisture conditions. The results of calculatedgain from indirect selection in moisture stress environment would improve yieldbetter than selection from non moisture stress environment. Coton breeders should,therefore, take into account the stress severity of the environment in choosing anindex. The varieties Viki and Avangard-264 had the highest yields under non-stressconditions. Vega and Chirpan-539 varieties had a low yield potential and showed ahigh stress tolerance to drought.

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