Genetic variation among disomic chromosome substitution lines of wheat variety C591 for grain yield attributes and nutrient uptake
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Date
2010
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Publisher
CCSHAU
Abstract
disomic chromosome substitution lines of C591 in the background of Chinese Spring. The experiment
was laid out in RBD with two treatments and replicated thrice in blocks under field condition. The data were
recorded for different plant morphological characters, nutrient contents of all disomic lines and their parents and
root characters of C591 and six DCS lines selected on the basis of grain weight
Analysis of variance showed the presence of significant variability in the materials under study.
Observations recorded on yield and its attributing traits and N, P, K and Zn contents showed genotype and
chromosome specific variation. Correlation coefficients revealed highly significant to significant positive
association among most characters. Highest magnitude of correlation coefficient was observed between P
content (mg/plant) and grain yield per plant (g) and lowest for N content (mg/plant) and flag leaf area.
On the basis of genotypic performance under various treatments for different plant characters, macro
N, P, K and Zn uptake, DCS lines 2D, 4D, 1B performance were promising. Thus, It could be postulated that the
quantitative traits loci for high N, P, K and Zn uptake were present on 2D, 3D chromosomes and for response on
6D. Data also showed that response genes and gene for performance are located on different chromosome. This
indicated good scope for wheat improvement through analytical breeding at chromosome level.
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Keywords
Physical control, Productivity, Fertilizers, Manpower, Selection, Topping, Markets, Biological phenomena, Processed products, Technological changes