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Register a new userGenetic variance, heritability, correlation and path coefficient analysis in some Bread Wheat Crosses (Triticum aestivum L.)
التباين الوراثي و درجة التوريث و تحليل الارتباط و معامل المرور في هجن من القمح الطري Triticumaestivum L
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نُفِّذ البحث في محطة قرحتا لبحوث المحاصيل الحقلية التابعة للهيئة العامة للبحوث العلمية الزراعية في سورية خلال الموسمين الزراعيين 2010\2011 و 2011\2012 حيث استخدم 45 هجيناً فردياً من القمح الطري Triticum aestivum L. حصلً عليها بطريقة التهجين نصف التبادلي بين عشرة طرز وراثية، في موسم 2010\2011 و قُيمت في موسم 2011 / 2012 لدراسة بعض المعايير الوراثية لصفة الغلة الحبية في النبات و مكوناتها و بعض الصفات المورفوفزيولوجية و النوعية لتحديد المعايير الأساسية للانتخاب.
The present investigation was conducted during 2010/2011 and 2011/2012 growing seasons at Karahta station for field crops research, General Commission for Scientific Agricultural Researches (G.C.S.A.R.), Syria. Forty five hybrids F1 produced using a half diallel cross among ten bread wheat (Triticum aestivum L.) genotypes, in 2010/2011 season, were evaluated during 2011/2012 season in order to study som of the genetic parameters for grain yield per plant, its components, some morphophysiological and quality traits to determine the basic criteria for selection.
References used
Acevedo, E., P. Silver, H. Silver and B. Solar. 2000. Wheat production in Mediterranean environments. In: Satorre, E.H. and G. A. Slafer (eds). Wheat ecology and physiology of yield determination. Food Products Press, An imprint of the Haworth Press, Inc, New York. London. Oxford pp. 296- 331
Adams, M. W. 1967. Basis of yield components compensation in crop plants. Crop Sci. 7:505-510
Bnejdi, F. and M. EL-Gazzah. 2010. Epistasis and genotype-byenvironmentinteraction of grain yield related traits in durum wheat. J. Plant Breeding and Crop Sci. 2(2): 024-029
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This study was carried out at Karahta Station of Field Crop
Research, General Commission of Agricultural Scientific Researches
during 2010-2011 and 2011-2012 cropping seasons in order to determine the
phenotypic correlation coefficient between the traits and the path coefficients
analysis for the most affected traits in grain yield.
The experiment was carried out at two planting dates in a Randomized
Complete Blocks Design with three replications at Maize Research Department,
General Commission for Scientific Agriculture Researches (G.C.S.A.R.)
Damascus, Syria, during two cro
pping season 2011 and 2012 to study the
phenotypic and genotypic coefficients of variation, heritability, genetic advance,
phenotypic correlation and path coefficient analysis for grain yield per plant,
its components and the height of plant and ear of two maize hybrids (IL.292-06
× IL.565-06, IL.459-06 × IL.362-06).
Genotypic and phenotypic coefficient of variance, broad and narrow-sense
heritability, expected genetic advance and relative genetic advance of earliness
characteristics in six pea hybrids produced by 4 x 4 half-diallel crossing scheme
were estima
ted. The results, in general, showed low values of phenotypic
coefficient of variance (in all crosses) of days to beginning of flowering and days
to marketable maturity; which may indicates to a low effect of environmental
variation on the expression of both these characters, but were medium to high
for number of low internodes and internode's length. Estimates of heritability
in broad sense were medium to high for days to beginning of flowering (0.42 –
0.90) and days to marketable maturity (0.42 – 0.91), and biased estimates of
narrow-sense heritability have been recorded in most of the crosses and in
majority of the parameters studied; so we can’t adopt them as reliable data.
The highest estimates of relative expected genetic advance of number for low
internodes have been observed in Mutant-3 x Dasargelo (25.95%) and
Dasargelo x Nassra (25.11 %) and for internode's length in Dasargelo x Oterlo
(37.31 %). The selection procedure can be effectively made for achievement
further improvement of internode's length in early segregating generations of
Dasargelo x Oterlo hybrid; because it has high values of genotypic coefficient of
variance, broad-sense heritability and relative expected genetic advance.
Seven cotton varieties ( Rakka5, Aleppo133, Aleppo90, Aleppo118 , Aleppo40,
Deir22, Line124) were grown in village Salhab ( Al-Ghab region , Hama) in 2012 using
randomized complete block design with three replications. were used to study estimation
of variance, broad sense heritability, genetic progress and correlation some of their
technological characters (Staple length mm, Length uniformity% , Fiber fineness
%(micronaire), trength Fiber(g/tex), Fiber elongation%, fiber maturity%), that’s to explore
potentials Genotypes in search region and put the numerous selectoral evidence in order to
obtain an additive and fast improve on the technological characters,
The study showed significant differences between in the studied genotypes, for
most of the considered traits.
The study suggested a variation of the values of Heritability, Genetic advance in the
characteristics technological of cotton., the highest Heritability of which was in the Staple
length and than trength Fiber, Fiber elongation , Fiber fineness, fiber maturity, Length
uniformity, characteristics where the inheritance degree reached (0.98, 0.97, 0.89,
0.80,0.75, 0.30) , genetic development% (1.03, 1.35, 0.36, 1.31,1.22, 0.11).
The results also showed a positive significant correlation between Staple length and
trength Fiber (r = 0.901**), also between Fiber elongation with fiber maturity and Length
uniformity ( r = 0.64**, r = 0.422**), and this gives us the area and ease of movement to
put the numerous selectoral evidence in order to improve the technological characters of
cotton.
In a study conducted at Research Center of Dara'a, General Commission
for Scientific Agricultural Research during two growth seasons 2007/2008 and
2008/2009. 11 faba bean (Vicia faba L.) populations were planted in an
experiment designed randomize
d complete blocks design with three
replications. The objectives were investigation of phenotypic variance among
populations studied, to determine the relationship among number of yielded
branches plant -1, number of pods plant -1 , number of seeds pod -1, 10- green
pod weight (g) and yield of green pods plant -1 (g) using correlation and path
coefficient analysis. The combined analysis of variance showed highly
significant differences among populations under study and for all
characteristics studied, except number of yielded branches plant-1 where
differences were only significant. The correlation and path analysis studies
revealed that negative and highly significant relationship was found between
number of yielded branches plant -1 and yield of green pods plant-1, while was
positive and highly significant between yield of green pods plant-1 and 10-green
pod weight. All direct effects of components studied were negative in both
seasons, except 10-green pod weight, and these results suggested adopting the
last component as a selection index during making selection of high yielding
genotypes in faba bean populations. .
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