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Screening of Bread Wheat Genotypes for Drought Tolerance Using Phenotypic and Proline Analyses

Overview of attention for article published in Frontiers in Plant Science, August 2016
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Title
Screening of Bread Wheat Genotypes for Drought Tolerance Using Phenotypic and Proline Analyses
Published in
Frontiers in Plant Science, August 2016
DOI 10.3389/fpls.2016.01276
Pubmed ID
Authors

Learnmore Mwadzingeni, Hussein Shimelis, Samson Tesfay, Toi J. Tsilo

Abstract

Drought stress is one of the leading constraints to wheat (Triticum aestivum L.) production globally. Breeding for drought tolerance using novel genetic resources is an important mitigation strategy. This study aimed to determine the level of drought tolerance among diverse bread wheat genotypes using agronomic traits and proline analyses and to establish correlation of proline content and agronomic traits under drought-stress conditions in order to select promising wheat lines for breeding. Ninety-six diverse genotypes including 88 lines from the International Maize and Wheat Improvement Center (CIMMYT)'s heat and drought nurseries, and eight local checks were evaluated under greenhouse and field conditions during 2014/15 and 2015/16 making four testing environments. The following phenotypic traits were collected after stress imposed during the heading to anthesis period: the number of days to heading (DTH), days to maturity (DTM), productive tiller number (TN), plant height (PH), spike length (SL), spikelet per spike (SPS), kernels per spike (KPS), thousand kernel weight (TKW) and grain yield (GY) and proline content (PC). Analysis of variance, Pearson's correlation coefficient, principal component and stress tolerance index were calculated. Genotypes with high yield performance under stressed and optimum conditions maintained high values for yield components. Proline content significantly increased under stress, but weakly correlated with agronomic traits under both optimal and water limited conditions. The positive correlation observed between grain yield and proline content under-drought stress conditions provides evidence that proline accumulation might ultimately be considered as a tool for effective selection of drought tolerant genotypes. The study selected 12 genotypes with high grain yields under drought stressed conditions and favorable adaptive traits useful for breeding.

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The data shown below were collected from the profiles of 3 X users who shared this research output. Click here to find out more about how the information was compiled.
Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 220 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Chile 1 <1%
Unknown 219 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 38 17%
Researcher 34 15%
Student > Master 26 12%
Student > Doctoral Student 18 8%
Student > Bachelor 14 6%
Other 34 15%
Unknown 56 25%
Readers by discipline Count As %
Agricultural and Biological Sciences 134 61%
Biochemistry, Genetics and Molecular Biology 14 6%
Engineering 4 2%
Environmental Science 2 <1%
Unspecified 1 <1%
Other 4 2%
Unknown 61 28%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 10 September 2016.
All research outputs
#14,730,543
of 22,883,326 outputs
Outputs from Frontiers in Plant Science
#9,088
of 20,271 outputs
Outputs of similar age
#204,905
of 340,306 outputs
Outputs of similar age from Frontiers in Plant Science
#173
of 450 outputs
Altmetric has tracked 22,883,326 research outputs across all sources so far. This one is in the 35th percentile – i.e., 35% of other outputs scored the same or lower than it.
So far Altmetric has tracked 20,271 research outputs from this source. They receive a mean Attention Score of 4.0. This one has gotten more attention than average, scoring higher than 54% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 340,306 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 39th percentile – i.e., 39% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 450 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 60% of its contemporaries.