The results shows that, the cold wet of Canary pine seeds stratification for 15 days at (4-5c◦),gave higher germination percentage( 91.11%). The treatment of soaking seeds with superiority was not significant. Other treatments; the cold wet strati
fication of seed for(30) days at(4-5c◦), soaking seeds with tap water for (48 h.) and the control, all gave lower germination percentages, but still higher than (60%).
The treatment of soaking seeds with GA had significant superiority in the speed of germination (2.32 day ∕ seed), but it was not significant with the cold wet stratification.
The aime of this study was to isolate and identify the seed borne fungi of two
varieties of Soybean, Sb172 and Sb44, using blotter method and P.D.A plate method.
21 species belong 10 genus were determined, saprophyte and pathogen Fungi.
P.D.A plat
e method showed the highest number of fungi in comparison with the
other method, and the fungus Aspergillus was the most frequent genus with a ratio of
44.2% for the variety sb172 and 45.14% for the variety sb44, followed by the fungus
Cladosporium and then Fusarium, whereas the genus Colletotrichum showed the lowest
frequent ratio (0.85%) with the variety Sb172.
The percentages of seeds germination and infection were differed between the two
varieties, and the ratio seeds germination of variety sb172 were higher than the variety
sb44 with the both methods of culture, and were equal 94% with prim variety and 92%
with the second ones by blotter method, whereas the ratio were 52% and 34% for both
varieties respectively by P.D.A plate method. However, the ratio of infection were, in
general, lower with prim variety than the second ones by the both method.
The results showed the seeds which were highest ratio infection appeared low ratio
germination .
A study was conducted on one type of Syrian pears ‘Pyrus syriaca. Boiss’ which is
widespread in Al-Qardahah area/Lattakia during 2012-2013. 9 superficial models were
studied, these are scattered in different locations (Ein Al Aaros , Derhana, and B
sin).
The results revealed the existence of differences in some of the characteristics, out of
13 morphological studied characteristics. A cluster analysis showed a division in the
studied models. Two main groups can be distinguished: the first group included the
following models (P1, P2, P3, P4, P5, P6), whereas the second group included the
following models (P7, P8, P9). These two main groups are further divided into 4 subgroups
which can be considered independent morphological Models.
The first main group contains the first and second subgroups with a similarity value
0.62. The first subgroup contains P1, P2, P3, P4, P5, and it is symbolized as A; while the
second subgroup contains P6 and it is symbolized as B.
The second main group contains the first and second subgroups with a similarity
value 0.77. The first subgroup contains P7, P9 and it is symbolized as C; whereas the
second subgroup contains P8 symbolized as D.
The research indicates that there is a difference in the seed germination percentage of
the studied models. The seeds and embryos of P9 gave the highest germination percentage,
while the seeds and embryos of P6 gave the fastest germination percentage.
This investigation was conducted at the laboratories of Horticulture
Departments, Faculty of Agriculture to study the effect of different levels of
salinity (NaCl) in the rate and the percentage of seed germination of lettuce,
Lactuca sativa L. va
rieties: Shinshar and Kabous and to determine the seedling
response to these levels of salinity with relative to root length, the length of the
cold, fresh and dry weight of seedlings. NaCl was used at 0, 50, 100, 150 and
200 mM/l. Resulted showed that a gradual increase in salinity concentrations
caused a gradual decline in all indicators studied in both cultivars. However,
the plants of Kabous variety were less sensitive to the salinity and also higher
than in the indicators studied for seedlings (rate of germination and percent,
stems and roots length, fresh and dry weight of seedlings) under salt stress
conditions.
This study investigated the effect of the water extract of two types
of algae which spread in Syrian marine: Colpomenia sinuosa
(Brown) and Ulva fasciata (green) and a combination of them in
the cultivation on tomato and tobacco seeds with concent
rations of
(1: 2 1: 4 1: 6 1: 8 1:10 1: 20) By adding 5ml of each
concentration, and comparing it with the control sample with only
distilled water added, the comparison was made in terms of: The
germination, stem length, root length, root branch.
