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.
Seven cotton varieties (Rakka 5, Aleppo133, Aleppo 90, Aleppo 118, Aleppo 40,
Deir 22, and Line124) were used in the study of some quantitative characteristics of cotton
yield and its components (seed cotton weight per boll/g, 100seed/g weight aver
age, lint
percentage %, seed cotton weight per plant/g, total dry matter weight, seed cotton yield per
unit area kg/ha), and physiological qualities (leaf area cm2, leaf area index %). The seven
varieties were grown in Salhab (Al-Ghab region, Hama) in 2012 using randomized
complete block design with three replications.
The study included estimating variance, broad sense heritability, genetic progress,
and genetic correlation between cotton yield and its components, which is to be used in
breeding programs.
This study was carried out at Karahta Station, Dept. of Field Crops
Researches, General Commission for Scientific Agriculture Researches
(GCSAR) Damascus, Syria, during the growing seasons (2009-2010, 2010-2011).
The crosses were grown inatrial us
ing randomized complete block design
(RCBD) with three replicates in order to evaluate number of spikes per plant,
number of grains per spike, thousand kernel weight and grain yield per plant
and estimate some genetic indices: broad scenes heritability (BSH), narrow
scenes heritability (NSH), and genetic advance (GA). Seeds of five populations
of the three evaluated single hybrids were formed by crossing of five inbred
lines. Analysis of variance results showed significant differences among mean
values of the five populations of each cross for all studied traits. The results
revealed that the broad scenes heritability ranged between high and moderate
for the following productivity traits (SP/PL, GR/SP, TKW and GY/P) and it
was (75, 40, 57) (38, 80, 38) (74, 60, 85) and (73, 73, 71) for the three crosses,
respectively. Additive gene action noticed on most traits indicated less selection
cycles to improve these traits.
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).
This study was carried out through the cooperation between Faculty of
Agricultural Damascus University and General Commission of Agricultural
Scientific Researches in Karahta station of field crops researches during 2010-
2011 and 2011-2012 succes
sive seasons. Four hybrids of durum wheat namely
(Duma1*Sauady), (Buhuth9*Q88), (Sham7*Q130) and (Horaney*Q131) were
evaluated to estimate heritability, genetic advance, heterosis and inbreeding
depression for days to heading ,grain filing period, plant height, number of
spikes per plant, and number of grains per plant. The mean average for all
these traits revealed highly significant differences among crosses. Low in
protein content trait (23-69%), medium in grain yield per plant (38-70) and
high heritability in thousand kernel weight (62-81%) were found. All hybrids
showed the highest for both mid and better parents heterosis for protein
content and gluten traits. High heritability was accompanied by high genetic
advance for thousand kernel weight. Low heritability was coupled with low
genetic advance for grain yield per plant, protein content and gluten. However,
greater magnitude of heritability coupled with higher genetic advance in some
traits provided that these parameters were under the control of additive genetic
effects. This indicates that selection should lead to fast genetic improvement of
the material. Moreover, the high genetic correlations for most of the traits,
suggested a strong inherent association among these traits at the genetic level.
Thus these traits deserve better attention in future breeding programs for
evolving better wheat in stress environments.
This study was conducted at the farm of Faculty of Agricultural –Kharabo
as an intensive crop during 201 and 2012 growing seasons. Using the
Randomized Complete Block Design (RCBD) with two replications to study
some genetic indices for grain yiel
d and its components, of 79 families of the
Sh group of maize improved by Full-sib selection. The results indicated that
the broad sense heritability ranged from high to moderate for some yield
components (number of kernels per row, number of rows per ear, ear length,
ear diameter, the weight of whole ear, whole kernel weight and grain yield and
it was 49.6, 52.9, 46.3 79.7, 56.74, 51 and 85.2%) respectively. Additive gene
action appeared to be controlling number of kernel per row, number of rows
per ear, ear length, ear diameter،,grain yiel, the weight of whole ea, kernel
weight indicating less selection cycles are required to improve yield depending
on its components.
This research was conducted at the Maize Research Department (Kharaboo) of
General Commission of Science Agriculture Research (GCSAR), Damascus, Syria,
during the growing seasons of 2009, 2010 ad, 2011 to study the genetic behavior of days
to 50%
silking, plant height, ear length, 100 grains weight and yield per plant by using
generation mean analysis (GMA) of two individual hybrids of maize, to estimate the
heritability, Phenotypic (PCV), and genotypic (GCV) coefficient variations and the
genetic advance.
Heritability and genetic advance of some grain yield components and some
morpho-physiological traits in 36 sorghum hybrids [Sorghum bicolor L.
Moench] produced by top-cross using cytoplasmic male sterility were
estimated.
Narrow-sense heritabilit
y for plant height and head length were relatively
high in Damascus location (65% and 56%) respectively, but the narrow-sense
heritability of all characters in Raqqa location were low, the range was from
3% for threshing percentage to 34% for plant height, and from 22% for seed
weight/head to 60% for plant height in the combined analysis.
Genetic advance estimates were relatively low for all characters, the range
was from 0% for 100 seed weight to 28.3% for plant height (Damascus
location), and from 0.02% for seed numbers/head to 15.2% for plant height
(Raqqa location), and from 5.8% for the number of days to flowering to 26.5%
for plant height (combined analysis).
Some characters such as plant height and head length showed relatively
high values of heritability, but exhibited low values of genetic advance.
Therefore other characters had low heritability coupled with low values of
genetic advance indicated predominance of non-additive gene action. This
result implies the need for several generations of selection to improve grain
yield components and other traits.
Five populations of faba bean were advanced from F2 to F3 generations by simple
recurrent selection at Terbol research station, International Centre for Agricultural
Research in The Dry Areas (ICARDA), Lebanon. During the growing season summer
201
3. The produced genotypes of selection were evaluated in winter 2013-2014 in order to
estimate the narrow-sense heritability and genetic advance for seed yield, plant height,
pods per plant and 100-seeds weight traits. The results showed that S2012-085 population
was superior in heritability for seed yield (0.5), 100-seed weight (0.5) and pods per plant
(0.5), while the population S2012-133 was recorded the supreme value for plant height
(0.858). The results demonstrate that genetic advance for seed yield trait was varied from
53% to 72.4%, and the highest value of genetic advance for seed yield was belonged to the
population S2012-018 (72.4%). Most of traits under research were recorded a moderate
values of narrow sense heritability accompanied with high values of genetic advance,
indicating to the importance of additive genetic variances related to the total genetic
variances, Consequently, recurrent selection is very important to apply in order to improve
the traits across segregated generations of faba bean.
Nine Syrian cotton genotypes i.e. Aleppo 33/1, Aleppo 118, Aleppo 90, Aleppo 40,
Aleppo 124 Rakka5, Deir Al-Zour 22, Line 106 and Rusafa, were used for statistical
and genetic analysis for productivity and some chemical indicators of seeds:
Lint p
ercentage%, cotton weight per plant/g, percent of oil in seeds and pulp, percent
of protein in seeds and pulp, percent of humidity in seeds and pulp, to explore
the potentiality of the genotypes in the studied region, and to establish a program
for the production of cotton and seeds, also to determine the selective indecies to be
used to improve cotton productivity and seed components, using randomized complete
block design with three replications. The experiment was conducted in Salhab
village, Al-Ghab region, Hama governorate, Syria, during 2015 season.
