scholarly journals The Use of Stress Tolerance Indices for the Selection of Tolerant Inbred Lines and their Correspondent Hybrids under Normal and Water-stress Conditions

2015 ◽  
Vol 29 ◽  
pp. 274-275 ◽  
Author(s):  
Fokion Papathanasiou ◽  
Christos Dordas ◽  
Fotis Gekas ◽  
Chrysanthi Pankou ◽  
Elissavet Ninou ◽  
...  
Keyword(s):  
Water Stress ◽  
Stress Tolerance ◽  
Inbred Lines ◽  
Stress Conditions ◽  
Tolerance Indices ◽  
Selection Of

scholarly journals Selection of Inbred Lines and their Correspondent Hybrids under Ultra-spaced and Highly Dense at Normal and Water-stress Conditions

2015 ◽  
Vol 29 ◽  
pp. 104-105
Author(s):  
Christos Dordas ◽  
Fotis Gekas ◽  
Chrysanthi Pankou ◽  
Elissavet Ninou ◽  
Ioannis Mylonas ◽  
...  
Keyword(s):  
Water Stress ◽  
Inbred Lines ◽  
Stress Conditions ◽  
Selection Of

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

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.

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

2013 ◽  
Vol 5 (3) ◽  
pp. 388-393 ◽  
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.

scholarly journals Seed Antioxidants Interplay with Drought Stress Tolerance Indices in Chilli (Capsicum annuum L) Seedlings

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
U. Lakshmi Sahitya ◽  
M. S. R. Krishna ◽  
R. Sri Deepthi ◽  
G. Shiva Prasad ◽  
D. Peda Kasim
Keyword(s):  
Water Stress ◽  
Drought Tolerance ◽  
Water Content ◽  
Stress Tolerance ◽  
Chlorophyll Content ◽  
Relative Water Content ◽  
Field Capacity ◽  
Water Regimes ◽  
Relative Water ◽  
Tolerance Indices

Altering climatic conditions and water stress drastically affects the chilli crop yield. In this scenario we adapted a strategic approach for screening of elite chilli genotypes, by exploring role of seed antioxidants in stress tolerance during vegetative phase. A total of 20 chilli genotypes’ seed antioxidant potential and its effect on water stress tolerance were studied at three water regimes, namely, control (100% Field Capacity), moderate (80% Field Capacity), and severe (60% Field Capacity) stress conditions. Drought tolerance traits relative water content, chlorophyll content, and activities of superoxide dismutase and catalase enzymes were measured. A strong correlation was observed between seed antioxidants and water stress tolerant traits in seedlings. Genotypes KCa-5, KCa-6, and KCa-10 showed low quantity of H2O2 and Malondialdehyde in seeds and maintained high membrane integrity and chlorophyll content in seedlings. High content of proline in KCa-5, KCa-7, and KCa-10 seeds retained high relative water content at seedling stage under severe water stress. Present work reveals genotypic differences of hot pepper to different water regimes. Based on Principal Component Analysis (PCA) of seed antioxidant variables and drought tolerance indices twenty genotypes segregated into three clusters, namely, drought tolerant and susceptible and moderately tolerant.

scholarly journals Screening of soybean (Glycine max L.) genotypes under water stress condition

2016 ◽  
Vol 41 (3) ◽  
pp. 441-450 ◽  
Author(s):  
JA Chowdhury ◽  
MA Karim ◽  
QA Khaliq ◽  
ARM Solaiman ◽  
JU Ahmed
Keyword(s):  
Cluster Analysis ◽  
Water Stress ◽  
Stress Tolerance ◽  
Seed Yield ◽  
Soybean Genotype ◽  
Water Stress Tolerance ◽  
Water Stress Condition ◽  
Soybean Genotypes ◽  
And Cluster Analysis ◽  
Tolerance Indices

Fifty soybean genotypes were screened for their water stress tolerance in a vinylhouse of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur during January to May, 2011. The objective of this study was to screen for drought tolerant soybean genotype(s) for improving yield of soybean under rainfed condition in Bangladesh. Water stress was imposed throughout the growing period by withholding irrigation until appearance of wilting symptom. Water stress caused an overall reduction in seed yield of soybean. However, reduction in seed yield due to water stress varied among the soybean genotypes. Variations were measured by tolerance indices, ranking and cluster analysis. Considering stress tolerance indices, ranking and cluster analysis, the genotypes BARI Soybean 5, BARI Soybean 6, Shohag and BD2331 were found as tolerant to water stress.Bangladesh J. Agril. Res. 41(3): 441-450, September 2016

scholarly journals Evaluation of the reaction of sunflower inbred lines and their F1 hybrids to drought conditions using various stress tolerance indices

2010 ◽  
Vol 8 (4) ◽  
pp. 1037 ◽  
Author(s):  
R. Darvishzadeh ◽  
A. Pirzad ◽  
H. Hatami-Maleki ◽  
S. Poormohammad-Kiani ◽  
A. Sarrafi
Keyword(s):  
Stress Tolerance ◽  
Inbred Lines ◽  
F1 Hybrids ◽  
Drought Conditions ◽  
Tolerance Indices
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