Arid
EVALUATION OF DROUGHT TOLERANT WHEAT GENOTYPES USING MORPHO-PHYSIOLOGICAL INDICES AS SCREENING TOOLS
Mujtaba, S. M.; Faisal, Summiya; Khan, Muhammad Ali; Shirazi, M. U.; Khan, M. A.
通讯作者Mujtaba, S. M.
来源期刊PAKISTAN JOURNAL OF BOTANY
ISSN0556-3321
EISSN2070-3368
出版年2018
卷号50期号:1页码:51-58
英文摘要

As water is the major limiting factor for agricultural crop production in arid and semi-arid areas, hence, twenty six wheat genotypes were screened under terminal drought stress for assessing their desiccation tolerance potentials. Experiment was conducted in completely randomized design (CRD) with three replicates and two irrigation treatments (control and terminal drought). Water scarcity had significantly reduced growth and yield contributing attributes while six genotypes performed relatively better under drought stress. Highest germination potentials (62.66%) were observed in MAS-20/2014 at -1.0 MPa osmotic stress under control conditions. However, genotype MAS-3/2014 exhibited maximum grain yield (23.32 g plant(-1)) while MAS-20/2014 showed minimum reduction (15.70%) in grain yield under drought stress. Physiological studies highlighted that better yielding genotypes exhibited relatively less reduction in chlorophyll contents (5.93%) in MAS-20/2014, nitrate reductase activity (6.70%)in MAS-11/2014 and osmotic potentials (0.769 MPa) in MAS-3/2014, while more relative increase in proline accumulation (83.35%) in MAS-20/2014, glycine-betaine (92.43%) in MAS-3/2014, total soluble sugars (36.65%) in MAS-23/2014 and potassium contents (3.66%) in MAS-6/2014 were analyzed under drought. These fmdings illustrated that wheat genotypes MAS-2/2014, MAS-3/2014, MAS-8/2014, MAS-12/2014, MAS-18/2014 and MAS-20/2014 exhibited better tolerance under drought conditions making them suitable for enhancing the productivity of rain fed and arid areas.


英文关键词Chlorophyll Germination Grain yield Osmo-protectants Nitrate reductase
类型Article
语种英语
国家Pakistan
收录类别SCI-E
WOS记录号WOS:000429180900007
WOS关键词WATER-STRESS ; YIELD COMPONENTS ; SALT STRESS ; BREAD WHEAT ; PROLINE ; MECHANISMS ; PLANT ; PHOTOSYNTHESIS ; METABOLISM
WOS类目Plant Sciences
WOS研究方向Plant Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/211925
作者单位NIA, Plant Physiol Div, Tandojam, Sindh, Pakistan
推荐引用方式
GB/T 7714
Mujtaba, S. M.,Faisal, Summiya,Khan, Muhammad Ali,et al. EVALUATION OF DROUGHT TOLERANT WHEAT GENOTYPES USING MORPHO-PHYSIOLOGICAL INDICES AS SCREENING TOOLS[J],2018,50(1):51-58.
APA Mujtaba, S. M.,Faisal, Summiya,Khan, Muhammad Ali,Shirazi, M. U.,&Khan, M. A..(2018).EVALUATION OF DROUGHT TOLERANT WHEAT GENOTYPES USING MORPHO-PHYSIOLOGICAL INDICES AS SCREENING TOOLS.PAKISTAN JOURNAL OF BOTANY,50(1),51-58.
MLA Mujtaba, S. M.,et al."EVALUATION OF DROUGHT TOLERANT WHEAT GENOTYPES USING MORPHO-PHYSIOLOGICAL INDICES AS SCREENING TOOLS".PAKISTAN JOURNAL OF BOTANY 50.1(2018):51-58.
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