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Register a new userThe Influence of Treatment of Some Vegetable Seeds with Aerated Solutions on Germination and Seedling Growth Rate
تأثير معاملة بذور الخضر قبل الزراعة في تحسين الإنبات و نمو الشتول
1913
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أجريت الدراسة على بذور البصل و الجزر لبيان تأثير المعاملة في تحسين الإنبات و قوة البذور، و على بذور البندورة لمعرفة تأثير المعاملة في سرعة نمو الشتول. عوملت البذور مدة 24 ساعة في أوعية زجاجية بلغت فيها نسبة البذور إلى الوسط المستخدم في المعاملة (ماء أم محلولا) 1:5 و بلغ تركيز كل من حامض السلسنيك و المحلول المغذي (مخصب بيولوجي) المستخدمين في نقع البذور 0.1 % تحت تهوية الأوساط بإمرار تيار مستمر من الهواء بواسطة مضخة هوائية. جففت البذور بعد انتهاء المعاملة في درجة حرارة الغرفة لإزالة رطوبتها السطحية. زرعت بذور البصل و الجزر في أطباق بتري على ورق ترشيح و على وسط هلامي (Gel) لاختبار الإنبات، و في أحواض مملوءة بالتراب لاختبار قوة البذور. و زرعت بذور البندورة في صواني الإنتاج السريع لدراسة تأثير المعاملة في نمو الشتول.
The experiment was carried out to assess the germinability and seedling growth rate of some treated vegetable seeds (i.e. onion, carrot, and tomato) with 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.
References used
Banyar, B.E. (1987). N-gel Polymers for Agricultural floide - drilling. Acta Hort. 198:111-120
Bennett, M.A., and L. Waters. (1987). Germination and emergence of high sugar sweet corn is improved by presowing hydration of seed. Hortscience. 22(2): 236-238
Bewley, J.D., and M. Black. (1978). Physiology and biochemistry of seed in relation to germination. New York, Springer - Verlage, 116P
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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.
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 treat
ment 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.
The effect of sandy soil treatment with superabsorbent polymer(0.1,0.2g/kg)on
infiltration rate and shoot and root growth of green pepper at two soil levels (80and
100%)of field capacity was studied.
The results indicate that sandy soil treatment
with polymer (0.1 and 0.2
g/kg)decreased infiltration rate by 41.1 and 50.9% alternatively compared to the control.
Germination rate, plant height ,leaf area, shoot and root dry weight were increased
significantly with polymer treatment compared to the control and mineral fertilization
treatment ,but that difference was not significant among field capacity levels (80and 100%)
Treatments with hydrogel (0.1,0.2g/kg)decreased water need to produce a unity of
shoot dry matter and economized water by 50 and 65%compared to the control.
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
The study was conducted to evaluate the efficiency of Pseudomonas chlororaphis MA342,
Serratia plymuthica HRO-C48K, Bacillus subtillis B2g, B. subtillis FZB27 to induce systemic
resistance in Tomato plants against Cucumber mosaic virus (CMV) under
greenhouse conditions.
Tomato seeds submerged in suspension of Pseudomonas chlororaphis MA342, Serratia
plymuthica HRO-C48, Bacillus subtillis B2g and B. subtillis FZB27 9×109cfu . plants emerged
from these seed were inoculated with CMV after 10 days of planting. The time of beginning
symptoms was recorded, Disease incidence, disease severity, area under disease progress curve
AUDPC, progress of infection disease degrees during the study period were calculated using
virtual symptoms . pyroxidas enzyme activity was determined, Some growth parameters such as
Plant height, foliage fresh weight, root fresh weight , foliage dry weight, root dry weight were
observed after 30 DAI. Results of this study showed that seed treatment with Pseudomonas
chlororaphis MA342, Serratia .plymuthica HRO-C48, Bacillus subtillis B2g, B. subtillis FZB27
significantly decreased the diseases incidence on treated and inculated plants which ranged
between 40% - 66.66% ,compared with un treated and inculated control 93.33% Without the
presence of significant differences between the bacterial treatments. significantly decreased the
diseases severity on treated plants which ranged between 45.53 %- 62.2% compared with inculated
and un treated control 88.86% .Without the presence of significant differences between the
bacterial treatments. Peroxidas activity on treated plants increased by Compared with untreated
plants. Seed treatments with bacteria significantly increased the plant growth. The plant height ,
fresh and dry weight of foliage, fresh and dry weight of root on treated plants were significantly
higher than those of inculated and un-treated plants according to LSD 5%.where bacteria reduced
the rate of stunting and the rate of decline mild and dry weight of foliage and mild and dry weight
of the root occurring due to infection with the Cucumber mosaic virus (CMV).
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