Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userthe effect of the water extract of algae Ulva fasciata and Colpomenia sinuosa in the germination of tomato and tobacco seeds
تأثير المستخلص المائي للطحلبين Ulva fasciata و Colpomenia sinuosa في استنبات بذور البندورة و التبغ
1299
10 26
0
(
0
)
Added by
Aِl-Baath University ورقة بحثية
Publication date
2017
fields
Life Science
and research's language is
العربية
Created by
Shamra Editor
Ask ChatGPT about the research
تم في هذا البحث دراسة تأثير المستخلص المائي لنوعين من الطحالب البحرية الموجودة في الشاطئ السوري Colpomenia sinuosa (السمراء) و Ulva fasciata (الخضراء) و مزيج منهما في استنبات بذور البندورة و التبغ بتراكيز (1:2 1:4 1:61:8 1:10 1:20) بإضافة 5 مل من كل تركيز, و مقارنتها مع العينة الشاهدة التي أضيف لها ماء مقطر فقط , تمت المقارنة من حيث : الانتاش و طول الساق و طول الجذر و التفرع الجذري.
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 concentrations 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.
References used
(ABBAS, A. 1992- Master Thesis. Contribution to the study of marine benthic algae on the coast of Latakia. Tishreen University - Faculty of Sciences – Syria. (arabic
(ABBAS, A. 2015- Registration of three new species of green algae (Bryopsidales, Chlorophyta) on the Syrian coast, Tishreen University Journal, Vol(37), Issue (1).(arabic
(AHMED, W.2015- Master Thesis. The impact of tobacco production on economic development in the Syrian coast. Tishreen University- Faculty of Economics – Syria. (arabic
rate research
Read More
The purpose of this study is to highlight on the ability of the alga Ulva fasciata to accumulate some organic pollutants (polycyclic aromatic hydrocarbons :PAHS, polychlorinated biphenyls: PCBs). The samples were collected from three sites at the Syr
ian coast during 2011.
The result of this study revealed the ability of alga to accumulate significantly the PAHs and their concentrations ranged from 30.52 to 72.7 ng/g dw, While the PCBs concentrations were less, it ranged between 6.00 and 24.01 ng/g dw.
The highest concentration of PAHs was observed at the Dirasat site, while the highest concentration of the PCBs found at the Cornish of Jablah. The logarithm bioconcentration factors (log BCF) of the aromatic compounds with three aromatic rings were close to the logarithm octanol/water partitioning coefficients (log Kow ), unlike the compounds with higher rings, where log BCF were obviously less than corresponding log Kow.
The log BCF values of PCBs increased with increasing chlorine atoms (2 - 6 atoms) , while no increasing was observed for components that contain 7 to 8 chlorine atoms
The effect of salinity and the treatment with fungicide on seed germination of Cupressus
sempervirens L. was investigated.
Five concentrations of salinity (0, 0.5, 1, 5 and 10%) were used. One part of the seeds was
treated with fungicides (Benomyl
), while the other part was germinated without fungicide
treatment. The results showed that seed germination was reduced by salinity, but the reduction was
more pronounced without fungicide and with salt concentration, the seeds didn't germinate at 5 and
10% NaCl.
Despite the decrease of germination indices with the increase of salt concentrations, the
statistical results didn't show significant differences in salinity concentrations and the control in
germination speed without fungicide, but they were significant with the fungicide. The statistical
results showed significant differences between the presence and absence of fungicide in all
treatments
It was used in this study (15) of the female mice . They were divided into three
groups : control , and two experimental groups (five mice in each group) .The control
group was given distilled water, while the first experimental group was received
only
Paraben daily ( 250 mg / kg of body weight). As the second experimental group was
received daily together of Paraben and aqueous ginger extract ( 250 mg / kg of paraben and
250 mg / aqueous ginger extract ) for (18 ) day .
The effect of different treatments on carob seed germination was studied.
The results showed that, seed scarification was the most effective method in
increasing germination rate as well as the use of concentrated sulfuric acid for 30 minutes
reac
hing 100%, followed by the treatment with alcohol for 60 minutes, and immersing
seeds in hot water for 60 minutes.
The results also indicated that the speed of germination when seeds were scarified
was the best (I.D.=14.5), followed by the treatment with concentrated sulfuric acid for 30
minutes (I.D.=21.5), alcohol for 60 minutes (I.D.= 38) and immersing seeds in hot water
for 60 minutes (ID.=60).
This study aim at investigating the tolerance of two tomato rootstock (Sprit and ES-
30502) widely speared in Syria and used for crafting some tomato hybrids grown in green
houses for different salinity levels (0- 25- 50- 75- 100- 150 mM NaCl).
Th
e results show that the germination of rootstock Sprit seeds was not influenced by
high salinity 150 mM despite a delay of 1-2 days compared with the control. A reduction
of 15% was observed in the rootstock ES-30502 at 100 and 150 mM NaCl salinity levels,
in addition to slower percentage rate of germination. In contrast, the effect of salinity on
the development of the radical and rootlet was more pronounced in Sprit compared to ES-
30502. Salinity decreased the growth of both shoots and roots, and also decreased nutrient
acquisition in both rootstocks, but to a lesser degree in ES-30502. The uptake of K was not
greatly affected and concentrations in shoot remained normal. The concentrations of Ca
and Mg were also not affected by salinity. The most pronounced effect of salinity was on
nitrogen effect (NO3) which was reduced greatly in both rootstocks. This was accompanied
by accumulation of free NO3 ions in the shoot tissue (58 and 45 % of total N uptake at
salinity level of 150 mM). It is most likely that toxicity of Na and Cl ions, and consequent
osmotic changes in cell tissue led to slower nitrate reductase activity (NRA) and
accumulation of NO3.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
