Drought Tolerance in Modern and Wild Wheat

Budak, Hikmet; Kantar, Melda; Kurtoğlu, Kuaybe Yücebilgili

doi:10.1155/2013/548246

Cited by 176 publications

(119 citation statements)

References 99 publications

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“…Several previous studies showed that there was a reducing of vegetative growth and a producing organs assimilate (Anjum, Xie, & Wang, 2011). The decrease of photosynthesis rate due to the decline of CO2 exchange the surface of leave, as the consequence for reducing of assimilate production (Budak, Kantar, & Yucebilgili Kurtoglu, 2013). Thus, the results of the experiment indicates that each line of wheat show different morphological changes in term of vegetative growth and yield as well.…”

Section: Resultsmentioning

confidence: 79%

PROLINE AND SPECIFIC ROOT LENGHT AS RESPONSE TO DROUGHT OF WHEAT LINES (Triticum aestivum L.)

Barunawati

Maghfoer²,

Kendarini³

et al. 2016

Agrivita.J.Agr.Sci

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The national wheat imported reaches approx.-imately 7 million ton per year, recently. The wheat plantation in Indonesia is strongly affected by the high temperature which triggers the stunned roots. Thus the plan wheat growth and production reduced. The experiment to investigate of selectedlocal wheat lines which were already established in Indonesia and resistant to drought effect. The level of drought influence on several growth parameters of vegetative plant and thus affected to seeds production as well as on total yield. The results show that the introduced-variety of wheat line, SO3 shows the significant tolerant to drought and able to maintain the SRL (specific root length) and increase the proline contents to with stand the drought condition compare to other lines (M7 and M8). The proline as amino acid climbed extremely effected by drought, in contrast the root growth in particular their length reduced. Those plant conditions influence the plant vegetative growth and generative phases, especially for seed production. Additionally, the M8 and SO3 selected-line presents the stability on yield production compare to other varieties, since it able maintain the content of proline and ratio of root length. Therefore, those selected lines are appropriate to grow in Indonesia which produces at approximately 3.5 t ha -1 .

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Section: Resultsmentioning

confidence: 79%

PROLINE AND SPECIFIC ROOT LENGHT AS RESPONSE TO DROUGHT OF WHEAT LINES (Triticum aestivum L.)

Barunawati

Maghfoer²,

Kendarini³

et al. 2016

Agrivita.J.Agr.Sci

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“…Global climate change presents a major threat to wheat production and productivity, particularly due to increased drought frequencies and intensities, hence, the need to breed drought tolerant and better adapted varieties for the changing environments (Budak et al, 2013). Possibly, the susceptibility of modern wheat varieties to water stress is magnifying the effects of drought on the crop's poor production and productivity under severe drought-stress condition.…”

Section: Discussionmentioning

confidence: 99%

Variance components and heritability of yield and yield components of wheat under drought-stressed and non-stressed conditions

Mwadzingeni¹,

Shimelis²,

Tsilo³

2017

Aust J Crop Sci

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This study estimated the variance components and heritability of yield and yield related traits of a population of 96 diverse bread wheat genotypes under drought-stressed and non-stressed conditions. The genotypes were evaluated across eight testing environments during the 2014/2015 and 2015/2016 growing seasons using an alpha lattice design with two replications. Combined analysis of variance and variance components were analysed following the General Linear Model (GLM)'s procedure. Results indicated the presence of significant effects of genotypes, seasons, sites, and water regimes and their interactions. From the eight testing conditions, high levels of genotypic variance (σ2g) were estimated for spike length (73%), number of spikelets per spike (44.19%), plant height (51.26%), number of kennels per spike (32.98%), number of days-to-heading (44.24%) and thousand seed weight (22.98%), resulting in high broad-sense heritability estimates of > 0.50. Conversely, genotypic variation was relatively moderate for the number of days to maturity, grain yield and number of productive tillers per plant, contributing to 15.03%, 8.46% and 6.13% of the total variation, respectively. The heritability estimates of the later traits were 20% ≤ H2 < 50% which may limit their selection gains under droughtstressed environments. Further, quantitative trait loci analysis and progeny testing are required to discern the number of genes and associated genetic effect and to pinpoint genomic regions in the tested wheat genetic resources for effective breeding for drought tolerance.

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“…Drought tolerance can be estimated by the mode, timing, and severity of the dehydration stress and its occurrence with other abiotic and biotic stress factors [7,8]. To counter adverse effects of different environmental stresses, plant have evolved special mechanisms and undergone a serial of physiological changes, but the "cross-talk of stresses" and "cross-tolerance to stresses" have not been extensively explored [9]. Crop genotypes having potential tolerance for environmental stresses is a common approach for improvement of crop productivity [10].…”

Section: Introductionmentioning

confidence: 99%

Physiological and biochemical responses of hexaploid wheat cultivars to drought stress

Chaudhari

Arshad²,

Ilyas³

2017

PAB

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Wheat is the most important cereal crop; it is staple diet for more than one third of the world population. Wheat production is influenced by several harsh environmental stresses that adversely affect its growth, metabolism and yield. Among them, Drought stress is the main factor limiting the productivity of wheat crop worldwide. Plants experience drought stress either when the water supply to roots becomes difficult or when the transpiration rate becomes very high. These two conditions often coincide under arid and semi-arid climates. Eighty percent area of Pakistan comes under arid and semi-arid region, so wheat productivity is adversely reduced in these areas due to lack of rain fall. Wheat yield under drought stress can be improved by several methods like conventional breeding, genetic transformation and marker assisted selection. For applying any of these methods, a close scans of morphological and physio-biochemical parameters are necessary. In the present study with 92 genotypes, a decrease of 35.57% for relative water content and 23.08% was observed for chlorophyll content in the stressed conditions. And an increase in metabolite level such as sugar (28.86%), SOD (4.53%) and canopy temperature (20.38%) was observed in moisture stress. Various genotypes have been identified which can be used further in plant breeding systems.

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Drought Tolerance in Modern and Wild Wheat

Cited by 176 publications

References 99 publications

PROLINE AND SPECIFIC ROOT LENGHT AS RESPONSE TO DROUGHT OF WHEAT LINES (Triticum aestivum L.)

PROLINE AND SPECIFIC ROOT LENGHT AS RESPONSE TO DROUGHT OF WHEAT LINES (Triticum aestivum L.)

Variance components and heritability of yield and yield components of wheat under drought-stressed and non-stressed conditions

Physiological and biochemical responses of hexaploid wheat cultivars to drought stress

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