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Register a new userA Laboratory Study on The Effect of Temperature and Seeds Oxygenation in an Aqueous Medium on Germination
دراسة مخبرية لكل من درجة الحرارة و معاملة البذور بالأكسجين في وسط مائي و تأثيرهما في الإنبات
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Damascus University ورقة بحثية
Publication date
1998
fields
Groves
and research's language is
العربية
Authors
مِْتيادي بوراس( باحث )
Created by
Shamra Editor
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أجريت الدراسة على بذور البصل و الفليفلة لبيان مدى تأثير درجة حرارة الوسط المائي أثناء المعاملة بالأكسجين في نسبة الإنبات و قوة البذور، و لتحديد الفترة اللازمة للمعاملة بالأكسجين. تراوحت فترة المعاملة بين ١٢ و ٣٦ ساعة تبعًا لنوع المحصول و حرارة الوسط التي تراوحت بين ١٠ و ٣٠ درجة مئوية. أوضحت نتائج الدراسة أن معاملة البذور بالأكسجين في وسط مائي أدت إلى تحسين نسبة الإنبات و قوة البذور، و أن الفترة اللازمة للمعاملة تختلف تبعًا لنوع المحصول و درجة حرارة الوسط، التي تراوحت بين ١٨ و ٢٤ ساعة لبذور البصل و بين ٢٤ و ٣٦ ساعة لبذور الفليفلة. و بينت النتائج أن الفترة اللازمة للمعاملة بالأكسجين من أجل تحسين نسبة الإنبات تقل بارتفاع درجة الحرارة.
This study has been carried out using the onion and pepper seeds to determine the effects of the aqueous medium temperature, during treatment with oxygen, on the germination percentage seed vigor and for determining the period needed for the treatment with the oxygen as well. The treatment period has taken ١٢-٣٦ hours according to the kind of crop and the medium temperature, which varied between ١٠-٣٠ °C. Results of the study indicated that the treatment of seeds with oxygen, in an aqueous medium, improved the germination percentage and the seed vigor. The period needed for the treatment of the seeds with oxygen differs according to the kind of crop and the temperature of the medium and varies between ١٨-٢٤ hours with respect to the onion seeds, and between ٢٤-٣٦ hours regarding the pepper seeds. The period needed for treatment with oxygen decreases with the rise of temperature.
References used
بوراس متيادي. ١٩٨٩ . التقنيات الحديثة في تحسين نوعية البذور وإعدادها للزراعة. مجلة الزراعة .والتنمية في الوطن العربي. الخرطوم. العدد الثالث. السنة الثامنة.
Abdel-Hafeez, F. ١٩٦٩. Effect of temperature and water regime on the emergence and yield of tomato. Netherl. J. Agri
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The experiment was carried out to assess the germinability and seedling
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aerated - aqueous solutions.
Seeds were treated for 24 hours with 0.1% of both succinic acid
and
nutrient solution, and the seeds to medium ratio was 1:5.
The soaking solution was continuously aerated by an air pump. At the end
of treatment, the seeds were dried up at room temperature to eliminate the
excess superficial moisture.
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 .
The aim of this research is to determine the best date and culture medium for the
production of big rolls consisting of seed mixture (Lolium perenne, Festuca Arundinacea,
Festuca rubra, Poa partensis) with the lowest costs. Seven different mediums
were
experimented in two different culture dates (15 September and 1 April).
The results showed that the mediums consisting of turf or spent mushrooms compost
gave the best germination rate (78-84%) in the two culture dates. They also gave ready big
rolls in a period of time less than in the other mediums (78-102 days). The mediums also
gave the best quality of big rolls in terms of light weight (41.96- 53.89 kg/m2), coverage
rate (93-98%), and color.
The medium that consisted of spent mushroom compost achieved an economic
increase higher than that in the other mediums, where the coefficient of profitability in the
former was (194.4%).
This study was conducted to evaluate the effect of pepper (pipiemento
variety), and eggplant (Dara variety) seed's treatment on germination
characteristics, and the impact of eggplant seeds treatment on seedling quality.
The seeds were treated for
24 hours in glass containers, in which the ratio of
seeds to the applied media was 1:5, the concentration of the mineral solution
was 0.1%, while the concentration of each of GA3 and the organic nutrient
solution was 0.01%.
The media were continuously aerated by passing a current of pure oxygen
(O2), at sufficient pressure to homogenously mix the seeds in the media. The
seeds were dried up after 24 hours of treatment to remove the excess moisture.
Seeds were germinated in Petri dishes, and soil-full containers to assess the
germinability, and seed vigor. The eggplant seeds were also sown in peat-moss
containing pots (8 cm indiameter) to study the influence of treatment on
seedling quality.
The results showed that treatment efficiency depends on the nature of the
used media, and crop. In addition, it has been revealed that the aeration of
media enhanced the germination, accelerated the seedling growth, and
improved their quality.
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