scholarly journals Phenotypic divergence for morphological and yield-related traits among some genotypes of durum wheat under drought stress and non-stress conditions

2015 ◽  
Vol 60 (2) ◽  
pp. 119-133
Author(s):  
Gohar Afrooz ◽  
Naser Sabaghnia ◽  
Rahmatollah Karimizadeh ◽  
Fariborz Shekari
Keyword(s):  
Drought Stress ◽  
Durum Wheat ◽  
Stress Conditions ◽  
Phenotypic Divergence

scholarly journals Evaluation of Durum Wheat Genotypes under Normal Irrigation and Drought Stress Conditions

2018 ◽  
Vol 9 (24) ◽  
pp. 119-136
Author(s):  
Mohammadreza Bihamta ◽  
Mehdi Shirkavand ◽  
Javad Hasanpour ◽  
Amin Afzalifar ◽  
◽  
...  
Keyword(s):  
Drought Stress ◽  
Durum Wheat ◽  
Stress Conditions ◽  
Wheat Genotypes

The use of a combination scoring index to improve durum productivity under drought stress

2019 ◽  
Vol 56 (2) ◽  
pp. 161-170 ◽  
Author(s):  
Reza Mohammadi
Keyword(s):  
Drought Stress ◽  
Durum Wheat ◽  
Kernel Weight ◽  
Stress Conditions ◽  
Severe Drought ◽  
Adaptive Traits ◽  
Wheat Genotypes ◽  
High Productivity ◽  
Selection Of ◽  
Scoring Index

AbstractBreeding for drought tolerance using novel genetic resources possessing relevant agronomic and adaptive traits is a key to enhance productivity and food security in wheat growing areas. Herein, the main objectives were (i) to use a combination scoring index (multiple scoring index, (MSI)) for selection of durum wheat genotypes under different drought stress intensities (SIs) (ii) to examine repeatability of the scoring index through bootstrap re-sample method, and (iii) to study the relationship of MSI with some drought-adaptive traits. Sixteen durum wheat genotypes were grown under rainfed and irrigated conditions during three cropping seasons (2012–2015), resulting in different drought SIs, that is, mild (SI < 0.3), moderate (0.3 < SI < 0.6), and severe (SI > 0.6). The average grain yields among test environments varied between 708 and 3631 kg ha−1. The validation of the methodology of scoring index was confirmed by the correlation coefficients between score indices and their original values across different drought SIs. According to MSI, the genotypes G16, G1, and G3 had the best combination of high productivity and high resilience to mild, moderate, and severe drought stress conditions, respectively. These results indicated that the ranking of genotypes varied among different drought SIs, which support the high potential of durum wheat for adaptation to different drought stress conditions. Based on the bootstrap samples, non-repeatable correlations were observed between the estimates of MSI from different levels of stress. The significant correlation between MSI with grain yield and 1000-kernel weight (TKW) under severe drought condition provides evidence that MSI ultimately be considered as a tool for effective selection of drought-tolerant genotypes. The MSI selected genotypes based on high productivity and resilience, to each level of drought SI, and favorable adaptive traits useful for breeding.

scholarly journals Study of Durum Wheat Genotypes' Response to Drought Stress Conditions

Helix ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 98-103
Author(s):  
Majid Khayatnezhad ◽  
Roza Gholamin
Keyword(s):  
Drought Stress ◽  
Durum Wheat ◽  
Stress Conditions ◽  
Wheat Genotypes

Flavonoid profiling by LC-MS IN 14 – 3-3ν knockout mutants of Arabidopsis thaliana during drought stress conditions

Planta Medica ◽  
2014 ◽  
Vol 80 (10) ◽  
Author(s):  
F Nabbie ◽  
O Shperdheja ◽  
J Millot ◽  
J Lindberg ◽  
B Peethambaran
Keyword(s):  
Arabidopsis Thaliana ◽  
Drought Stress ◽  
Stress Conditions ◽  
Knockout Mutants

scholarly journals Abiotic Stress Response of Near-Isogenic Spring Durum Wheat Lines under Different Sowing Densities

2021 ◽  
Vol 22 (4) ◽  
pp. 2053
Author(s):  
Judit Bányai ◽  
Marco Maccaferri ◽  
László Láng ◽  
Marianna Mayer ◽  
Viola Tóth ◽  
...  
Keyword(s):  
Drought Stress ◽  
Durum Wheat ◽  
Chlorophyll Content ◽  
Vegetation Index ◽  
Flag Leaf ◽  
Kernel Weight ◽  
Grain Weight ◽  
Abiotic Stress Response ◽  
Grain Number ◽  
Isogenic Lines

A detailed study was made of changes in the plant development, morphology, physiology and yield biology of near-isogenic lines of spring durum wheat sown in the field with different plant densities in two consecutive years (2013–2014). An analysis was made of the drought tolerance of isogenic lines selected for yield QTLs (QYld.idw-2B and QYld.idw-3B), and the presence of QTL effects was examined in spring sowings. Comparisons were made of the traits of the isogenic pairs QYld.idw-3B++ and QYld.idw-3B−− both within and between the pairs. Changes in the polyamine content, antioxidant enzyme activity, chlorophyll content of the flag leaf and the normalized difference vegetation index (NDVI) of the plot were monitored in response to drought stress, and the relationship between these components and the yield was analyzed. In the case of moderate stress, differences between the NIL++ and NIL−− pairs appeared in the early dough stage, indicating that the QYld.idw-3B++ QTL region was able to maintain photosynthetic activity for a longer period, resulting in greater grain number and grain weight at the end of the growing period. The chlorophyll content of the flag leaf in phenophases Z77 and Z83 was significantly correlated with the grain number and grain weight of the main spike. The grain yield was greatly influenced by the treatment, while the genotype had a significant effect on the thousand-kernel weight and on the grain number and grain weight of the main spike. When the lines were compared in the non-irrigated treatment, significantly more grains and significantly higher grain weight were observed in the main spike in NIL++ lines, confirming the theory that the higher yields of the QYld.idw-3B++ lines when sown in spring and exposed to drought stress could be attributed to the positive effect of the “Kofa” QTL on chromosome 3B.

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