This study was carried out at Kharabu Station, General Commission for Scientific
Agricultural Research (GCSAR), during the growing seasons 2011 and 2012, to
estimate phenotypic correlation, and path coefficient of some morphological and
green fodd
er yield components (days to flowering, plant height (cm), number
of leaves per plant, number of tillers per plant, and green fodder yield (ton/ha)).
Fifteen pearl millet crosses resulted from half diallel mating system between six
inbred lines. The experiment was arranged in a randomized complete block design
(RCBD), with three replications.
This study was carried out at the Scientific Agriculture Research Center, Al-Ghab,
Syria, during 2013 –2014 growing seasons to estimate heterosis, combining ability,
phenotypic correlation and path analysis for plant and ear height, ear length, ear
diameter,
number of rows per ear, number of kernels per row, 100 kernel weight and grain yield per
plant for eighteen hybrids produced by the line × tester method, the major findings were:
inbred lines, testers, hybrids and combining ability mean squares were significant for all
traits, indicating that additive and non-additive gene actions were the important in
inheritance of all traits. The ratios of σ2
GCA/σ2
SCA showed that non-additive gene action was
more important in controlling all traits except of number of kernel per row. Heterosis
percentage for all traits were significant compared with the check variety except of ear
height trait. GCA effects showed that the lines P1 and P7 were good combiners for grain
yield per plant, also, SCA effects showed that P2×P8, P5×P8, P4×P9 and P1×P7 crosses were
the best F1 combiners for grain yield per plant. Results of phenotypic correlation and path
analysis values showed that ear length, ear diameter and number of kernel per row were
positively and significantly associated with grain yield per plant, also, these traits can be
considered as selection criteria may lead to the improvement of grain yield in maize.
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. .