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Studies on morpho-physiological and grain yield traits under salt stress in bread wheat [Triticum aestivum L.]

KrishiKosh

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Title Studies on morpho-physiological and grain yield traits under salt stress in bread wheat [Triticum aestivum L.]
 
Creator Kanwar Singh
 
Contributor Sethi, S.K.
 
Subject Yields, Wheats, Planting, Tolerance, Genotypes, Developmental stages, Grain, Food preservation, Irrigation, Genetics
 
Description An attempt was made to study the genetic variability amongst 14 genotypes of wheat.
Significant difference for various traits indicated substantial amount of variability existed among the
genotypes for all traits. The genotypes P9012 and P 9038 yielded significantly better under testing at
all the salinity levels viz., 2.5 dS/m, 5.0 dS/m and 7.5 dS/m while genotypes P 9017 and P 9034
yielded significantly better under salinity levels of 2.5 dS/m and 5.0 dS/m. High estimate of genotypic
coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) were recorded for
reducing sugar content and total sugar content. Highest heritability were recorded for total sugar
content followed by grain yield per plot, protein content, osmotic potential, number of grains per ear,
biological yield per plot, number of tillers per meter, ear length while at highest salinity level highest
heritability was recorded for total sugar content followed by grain yield per plot, number of grains per
ear, biological yield per plot, reducing sugar content, osmotic potential and plant height. Positive and
significant correlations of grain yield were recorded with number of grains per ear, plant height and
biological yield per plot negative and significant association with osmotic potential and total sugar
content at control condition while at highest salinity level positive and significant correlations of grain
yield were recorded with ear length, plant height, biological yield and harvest index while negative and
significant association with osmotic potential. Strong association of these traits revealed that the
selection based on these traits would ultimately improve grain yield and it is also suggested that the
genotypes possessing these correlation association characters is most useful for obtaining desirable
high yielding genotypes. Path coefficient analysis revealed that six characters viz., number of tillers per
meter, ear length, days to 50% flowering, biological yield per plot, harvest index and protein content
have direct effects on grain yield per plot, On the basis of salt susceptibility index and physiological
parameters, genotype P 9013 and P9012 were most promising. On the basis of quality parameters the
genotypes P 9003, P 9034 and Kh. 65 were most promising.
 
Date 2016-10-22T11:53:50Z
2016-10-22T11:53:50Z
2015
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/81386
 
Language en
 
Format application/pdf
 
Publisher CCSHAU