scholarly journals Evaluation of Drought Tolerance Indices for Selection of Barley (Hordeum vulgare L.) Cultivars under Different Levels of Irrigation

2017 ◽  
Vol 6 (9) ◽  
pp. 624-632 ◽  
Author(s):  
Bhagat Singh A.K. Dhaka ◽  
Mukesh Kumar Satish Kumar
Keyword(s):  
Hordeum Vulgare ◽  
Drought Tolerance ◽  
Hordeum Vulgare L ◽  
Drought Tolerance Indices ◽  
Tolerance Indices ◽  
Different Levels ◽  
Selection Of

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

2017 ◽  
Vol 62 (1) ◽  
pp. 1-14 ◽  
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.

scholarly journals Short Communication: Evaluation of drought tolerance indices for genotype selection of foxtail millet (Setaria italica)

2018 ◽  
Vol 2 (2) ◽  
pp. 37-40 ◽  
Author(s):  
SHERLY LAPUIMAKUNI ◽  
NURUL KHUMAIDA ◽  
SINTHO WAHYUNING ARDIE ◽  
SINTHO WAHYUNING ARDIE
Keyword(s):  
Drought Stress ◽  
Drought Tolerance ◽  
Foxtail Millet ◽  
Setaria Italica ◽  
Potential Yield ◽  
Tolerance Level ◽  
Drought Tolerant ◽  
Drought Tolerance Indices ◽  
Tolerance Indices ◽  
Selection Of

Lapuimakuni S, Khumaida N, Ardie SW. 2018. Evaluation of drought tolerance indices for genotype selection of foxtail millet (Setaria italica). Trop Drylands 2: 37-40. Foxtail millet (Setaria italica (L.) Beauv) is one of underutilized crop grown for its nutritious grain and its relative tolerance to drought stress. Although foxtail millet has been reported as to be relatively tolerant to drought stress, the drought tolerance level of this crop is varied between genotypes. Thus, breeding approaches to develop drought-tolerant foxtail millet variety is of great importance. This study aimed to: (i) evaluate several drought tolerance indices to determine one or more predictors among studied indices, and (ii) identify the drought tolerance level of the evaluated foxtail millet genotypes. Eight foxtail millet genotypes were planted in a greenhouse with a completely randomized design and five replications under both drought and normal watering conditions. Staggered planting was applied to synchronize flowering time. Water was withheld for 15 days during the flowering period, and then plants were re-watered until harvest time. Multiple indices for drought tolerance were calculated based on the potential yield (Yp) under non-stress and yield (Ys) under stress conditions. Based on the correlation, principal component analysis, and cluster analysis, yield index (YI) and harmonic mean (HM) were considered the best indices for the selection of drought-tolerant foxtail millet genotypes. By using the best indices, two foxtail millet genotypes (ICERI-5 and ICERI-6) were considered as drought tolerant genotypes.

scholarly journals Evaluation of drought tolerance indices for selection of high yielding drought tolerant rice genotypes in Lamjung, Nepal

2020 ◽  
Vol 7 (2) ◽  
pp. 54-59
Author(s):  
Kamana Bhandari ◽  
Laxmi Prasad Joshi ◽  
Nikita Bhandari ◽  
Koshraj Upadhyay ◽  
Subarna Sharma
Keyword(s):  
Drought Tolerance ◽  
Drought Tolerant ◽  
Rice Genotypes ◽  
Drought Tolerance Indices ◽  
Tolerance Indices ◽  
Selection Of

Selection of drought-tolerant tef (Eragrostis tef) genotypes using drought tolerance indices

2017 ◽  
Vol 34 (4) ◽  
pp. 291-300 ◽  
Author(s):  
Mizan Tesfay Abraha ◽  
Hussein A Shimelis ◽  
Mark D Laing ◽  
Kebebew Assefa
Keyword(s):  
Drought Tolerance ◽  
Eragrostis Tef ◽  
Drought Tolerant ◽  
Drought Tolerance Indices ◽  
Tolerance Indices ◽  
Selection Of

scholarly journals Drought tolerance indices for selection of drought tolerant, high yielding upland rice genotypes

2019 ◽  
Vol 13 (01) ◽  
pp. 170-178 ◽  
Author(s):  
Yosep S. Mau ◽  
◽  
Antonius S.S. Ndiwa ◽  
Shirly S. Oematan ◽  
Jenny E.R. Markus ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Upland Rice ◽  
Drought Tolerant ◽  
Rice Genotypes ◽  
Drought Tolerance Indices ◽  
Tolerance Indices ◽  
Selection Of

Repeatability of drought tolerance indices in chickpea genotypes over stress and non-stress environments

2013 ◽  
Vol 61 (2) ◽  
pp. 123-137
Author(s):  
E. Farshadfar ◽  
M. Geravandi
Keyword(s):  
Drought Tolerance ◽  
Seed Yield ◽  
Rank Correlation ◽  
Tolerance Index ◽  
Spearman’S Rank Correlation ◽  
Drought Tolerant ◽  
Cropping Seasons ◽  
Drought Tolerance Indices ◽  
Tolerance Indices ◽  
Selection Of

To evaluate the repeatability of yield-based drought tolerance indices over years, twenty chickpea genotypes were evaluated using a randomized complete block design with three replications for four cropping seasons (2008–2012) in the experimental field of Razi University. The result of combined analysis of variance for seed yield showed significant differences for location (L) (rain-fed and irrigated), genotype (G), and LY and GL interactions, indicating the presence of genetic variability and the possibility of selection for stable, drought-tolerant genotypes. Principal component analysis (PCA) based on the Spearman's rank correlation matrix was used to visualize the relationships between different drought tolerance indices. Due to their positive significant correlation with seed yield under both conditions over four cropping seasons, the stress tolerance index (STI) and geometric mean productivity (GMP) were identified as desirable criteria for the selection of drought-tolerant genotypes under severe stress conditions. The selection of drought-tolerant chickpea genotypes using these indices in a one-year trial will mirror the results of multiple cropping season trials. According to the Spearman's rank correlation coefficients between single vs. single years and single vs. the mean of multiple years, the tolerance index (TOL), mean productivity (MP), abiotic tolerance index (ATI), stress susceptibility percentage index (SSPI) and modified stress tolerance index (K1STI) were identified as repeatable indices under severe drought conditions.

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