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Register a new userThe effect of Salinity and the Treatment with fungicides in Seeds Germination of Cupressus sempervirens L.
تأثير الملوحة و المعاملة بالمبيدات الفطرية في إنبات بذور السرو دائم الإخضرار L. Cupressus sempervirens
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ميرنا عشي( باحث )
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نفذ البحث لاختبار تأثير كل من الملوحة و المعاملة بالمبيدات الفطرية للتخلص من الفطريات ( المحمولة على البذرة و المرافقة لها ) في بذور السرو دائم الاخضرار Cupressus sempervirens L. في مرحلة الإنبات. تمت دراسة مؤشرات إنبات البذور في تراكيز ملحية من NaCl ( 0%، 0.5% ، 1% ، 5% ، 10% ) في الظروف المخبرية. و لكن قبل الزراعة في الأوساط الملحية تم تقسيم البذور إلى مجموعتين، الأولى عولجت بالمبيد الفطري (البينوميل ) كمعقم، و الثانية زرعت مباشرة دون تعقيم. أظهرت النتائج أن إنتاش البذور قد تراجع بالملوحة، و لكن كان التراجع أكثر وضوحاً دون المبيد الفطري و مع تراكيز الملح، لم تنبت البذور عند تركيز 5 و 10% NaCl. و على الرغم من انخفاض مؤشرات الإنبات الأخرى مع ارتفاع التراكيز الملحية ، إلا أن النتائج الإحصائية لم تسجل فروقاً معنوية بين التراكيز الملحية و الشاهد في سرعة الإنبات دون مبيد فطري ، لكنها كانت معنوية بوجود المبيد. كما أظهرت النتائج الإحصائية أيضاً وجود فروقٍ معنوية بين وجود المبيد و عدمه في جميع المعاملات.
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
References used
AGRIOS,G.N. Plant harvest disease of grains and legumes.In:Plant patology. 2nd ed.Academic Press,Inc.,London,1978,703
ANASARI,R.; NAQVI,S.M;ALI,S.A. Tolerance of wheat(Triticum aestivum L.) cultivars to Sodium salts. Rachis,6(2),1987,41-44
BEGUM,F; KARMOKER,J.K;FATTAH,Q.A; MINIRUZZAMAN,A.M. the effect of salinity on germination and its correlation with k+, Na+, CL- accumulation in germinating seed of triticum aectivum L. C.V.AKAR.Plant cell physiology 33(7), 1992, 1009-1014
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percentage of germination Cupressus arizonicaL.seeds to use plants in forestation projects,
seeds were get from mature conifers, and tested by different treatments
with control, then
cultured within polyethylene bags many times to calculate indicators of germination. The
results showed that the soaking the seeds Cupressus arizonicaL. in citric acid 0.1% with
cold wet stratification for 30 days at 4-5c gave higher germination percentage 75%.The
treatments of the soaking seeds in sulfuric acid0.1% and hydroxide sodium 0.1% with cold
wet stratification for 30 days gave respectively 60%-53% .But superiority was not
significant. Other treatments; soaking the seeds in tap water 24h with cold wet
stratification for 30 days gave only 36%.But the control treatment gave lower germination
percentage of all just only 9%.
The treatment of soaking seeds in citric acid 0.1% with cold wet stratification for 30
days surpassed the rest of the treatments in effect on plant height at the end of the
experiment.
This study aims to investigate the abilities of two tree species (Pinus brutia and
Cupressus sempervirens) planted in Banias Refinery Company to absorb and accumulate
lead and zinc basically emitted by the Refinery. Samples of the planted species (
leaves,
bark, and wood) and soil from around the plants were collected and analyzed by atomic
absorption spectrophotometer. The results did not show significant pollution with these
two elements. Moreover, there were not any significant differences between the two
species in terms of the accumulation of Pb and Zn. While the Pb concentrations ranged
between (24.96-30.84 ppm) for P. brutia and (24.05-30.23 ppm) for C. sempervirens, the
Zn concentrations ranged between (34.99-82.99 ppm) for P. brutia, (18.11-59.86 ppm) for
C. sempervirens. It was also revealed that P. brutia bark accumulated Pb more than the
other parts, whereas C. sempervirens leaves accumulated Zn more than the other parts.
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).
The objective of this study is to compare the effect of five different Nacl
concentration (0,50,100,150,200 mM) on seeds germination and seedling growth of two
cultivars of soybean (sb-44,sb-172).
Seeds were germinated in petri dishes with sterile
filter paper moistened with 10 ml
of test solution at 25 c˚ in dark .
The obtained results showed that germination percentage , length of root and
hypocotyl were decreased with the increase of the Nacl concentration in the medium. The
best values was from cultivar sb-44 .
After seven days of incubation , significant differences were observed between
control and treated seeds .
Germinated seeds were subcultured on basal Murashige and Skoog medium solid at
the same Nacl concentration . The roots growth was mor affected by 200 mM Nacl
compared to seedling growth .
Plantlets were transfered into pots with nutrient soil , irrigated with saline water and
were adapted at laboratory . we obtained good plants grew to maturity in 10- 12 weeks .
The objective of this study is to compare the effect of five different Nacl concentration (0,50,100,150,200 mM) on seeds germination and seedling growth of two cultivars of soybean (sb-44,sb-172).
Seeds were germinated in petri dishes with sterile
filter paper moistened with 10 ml of test solution at 25 c˚ in dark .
The obtained results showed that germination percentage , length of root and hypocotyl were decreased with the increase of the Nacl concentration in the medium. The best values was from cultivar sb-44 .
After seven days of incubation , significant differences were observed between control and treated seeds .
Germinated seeds were subcultured on basal Murashige and Skoog medium solid at the same Nacl concentration . The roots growth was mor affected by 200 mM Nacl compared to seedling growth .
Plantlets were transfered into pots with nutrient soil , irrigated with saline water and were adapted at laboratory . we obtained good plants grew to maturity in 10- 12 weeks .
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