Tolerance of 42 Bread Wheat Genotypes to Drought Stress after Anthesis

2008 ◽  
Vol 11 (10) ◽  
pp. 1330-1335 ◽  
Author(s):  
Reza Shahryari ◽  
Elshad Gurbanov ◽  
Aladdin Gadimov ◽  
Davoud Hassanpana
Keyword(s):  
Drought Stress ◽  
Bread Wheat ◽  
Wheat Genotypes

Effect of nitric oxide on the tolerance mechanism of bread wheat genotypes under drought stress

2014 ◽  
Vol 185 ◽  
pp. S33 ◽  
Author(s):  
Mehmet Hamurcu ◽  
Tijen Demiral ◽  
Merve Calik ◽  
Z. Zeynep Avsaroglu ◽  
Ozgur Celik ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Drought Stress ◽  
Bread Wheat ◽  
Tolerance Mechanism ◽  
Wheat Genotypes

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

Genetika ◽  
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.

scholarly journals Response of contrasting bread wheat genotypes for heat and drought stress tolerance for rhizospheric soil properties

2021 ◽  
Vol 42 (5) ◽  
pp. 1298-1306
Author(s):  
O.P. Ahlawat ◽  
◽  
T. Chugh ◽  
K. Venkatesh ◽  
R. Tiwari ◽  
...  
Keyword(s):  
Drought Stress ◽  
Bread Wheat ◽  
Chemical Properties ◽  
Rhizospheric Soil ◽  
Available Nitrogen ◽  
Wheat Varieties ◽  
Wheat Genotypes ◽  
Stages Of Growth ◽  
Significant Difference ◽  
Tolerant Genotype

Aim: The study aimed at investigating differential response of contrasting bread wheat genotypes for heat and drought stress towards changes in chemical and microbial components of rhizospheric soil for developing climate resilient wheat varieties. Methodology: Rhizospheric soils were studied for changes in pH, electrical conductivity, cations, anions, micro-elements, major-elements, organic carbon and organic matter, and plant growth promoting rhizobacteria(PGPRs) abundance at booting and anthesis stages of growth in four contrasting genotypes during 2017-18 and 2018-19 crop seasons Results: The contrasting genotypes (HD2967 and WH730) for heat tolerance exhibited significant interaction between genotype and stage of growth for Na+, K+ and nitrogen, while genotypes (HUW468 and C306) for drought tolerance exhibited it for available nitrogen only. Significant difference for Ca2+, Mg2+, iron, manganese, nitrogen and potassium levels were recorded in drought stress related genotypes at two stages of growth. The heat tolerant genotype showed 2.54 and 10.67 folds enhancement in population of N2 fixing and spore forming bacteria at anthesis compared to sensitive genotypes, while drought tolerant genotype showed 1.51, 1.07 and 6.26 folds in P-solubilizing, N2 fixing and general bacterial abundance. Interpretation: Contrasting genotypes for heat and drought stresses responded differently for chemical properties and abundance of PGPRs in rhizospheric soils.

Grain quality of elite bread wheat genotypes under non-stress and drought-stress conditions

2019 ◽  
Vol 34 (3) ◽  
pp. 314-334
Author(s):  
Zamalotshwa Thungo ◽  
Hussein Shimelis ◽  
Alfred Odindo ◽  
Jacob Mashilo
Keyword(s):  
Drought Stress ◽  
Bread Wheat ◽  
Grain Quality ◽  
Stress Conditions ◽  
Wheat Genotypes

scholarly journals Evaluation of some bread wheat genotypes popular in Saudi Arabia under drought stress

2019 ◽  
pp. 1892-1900
Author(s):  
Soleman M. Al Otayk ◽  
Abdulrahman A. AL Soqeer ◽  
Abd Elsalam M. Menshawy ◽  
Mohamed I. Motawei
Keyword(s):  
Saudi Arabia ◽  
Drought Stress ◽  
Grain Yield ◽  
Bread Wheat ◽  
Irrigation Treatment ◽  
Utilization Efficiency ◽  
Yield Potential ◽  
Irrigation Regime ◽  
Wheat Genotypes ◽  
Days To Heading

Six bread wheat genotypes were evaluated in three separate irrigation regime experiments to compare the response of agronomic performance and to identify genotypes with high yield potential under drought stress. The first irrigation treatment (I3) was given normal water irrigation (about 7000 m3 ha-1, according to recommendation for Qassim Region). The second (I2) and third (I1) treatments were given 2/3 and 1/3 of water amount of the first treatment, respectively. Factorial experiments in randomized complete block design with three replications were conducted during 2009/2010 and 2010/2011 seasons in the arid environment of central region of Saudi Arabia. Measurements were taken on days to heading, plant height, number of spikes m-2, number of kernels spike-1, 1000-kernel weight and grain yield. The drought susceptibility index (DSI) and water utilization efficiency (WUE) were calculated. The results revealed that effect of irrigation regime was highly significant for all traits, except days to heading. All studied characters were significantly decreased by reducing the amount of irrigation water. Grain yield showed maximum sensitivity as affected by moisture-stress. Means over environments indicated the existence of sufficient genetic variability among the genotypes for all the characters studied. Giza 171 recorded the highest values for most yield characters, while genotype 'Sama' was the lowest for the most yield characters. Giza 171, Sakha 93 and IC-1 recorded highest grain yield and WUE, based on average over irrigation treatments. Giza 171, Sakha 93 and IC-2 can be considered as drought stress tolerant genotypes.

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