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Register a new userThe effect of storage method and spraying with some nutrients and gibberellic acid on seeds viability of trifoliate orange (Poncirus trifoliata L.)
تأثير طريقة التخزين و الرش ببعض العناصر الغذائية و حمض الجبريليك في حيوية بذور البرتقال ثلاثي الأوراق
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2016
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العربية
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أُجريت الدراسة على أشجار الأصل البرتقال ثلاثي الأوراق في محطة بحوث سيانو حيث تمّ رش الأشجار بالعناصر الغذائية، و بحمض الجبريليك GA3، كُلاً على حده، أو معاً، إضافة الى الشاهد من دون رش و تمّ اختبار معاملات مختلفة لتخزين البذور: لدراسة تأثيرها على حيوية بذوره، بهدف زيادة فترة حيويتها لأطول فترة ممكنة، حيث تمّ تخزين البذور لمدة ثلاثة أشهر وفقاً لأربع معاملات: أ- معاملة تخزين البذور في الثمار على درجة حرارة البراد +4 مْ.ب- معاملة تخزين البذور في العصير على درجة حرارة البراد+4 مْ.ج- معاملة تخزين البذور على درجة حرارة المخبر.د- معاملة تخزين البذور على درجة حرارة البراد+4 مْ. أعطت جميع معاملات الرش نتائج إيجابية عند الزراعة بعد الجني و الاستخراج مباشرة، مقارنة مع معاملة الشاهد، في حين أعطت معاملة تخزين البذور ضمن الثمرة أعلى نسبة إنبات في جميع معاملات الرش, و ذلك بعد ثلاثة أشهر من التخزين، و تفوقت معنوياً معاملة رش العناصر الغذائية عند التخزين في الثمار على باقي المعاملات عدا معاملة الخلطة، و قد تراجعت حيوية البذور بشكل كبير في جميع المعاملات عند تخزين البذور بدرجة حرارة البراد +4 مْ. بينما انعدم الإنبات في معاملة تخزين البذور في العصير، و في معاملة تخزين البذور بدرجة حرارة المخبر.
The study was carried out on trifoliate orange rootstock trees (Poncirus trifoliata L.) at Ciano Research Station where the trees were sprayed with nutrients or gibberelic acid GA3 or togethers, beside the control (without spraying). Different treatments of seed storage were tested in order to study their effect on seed viability to increase it. The seeds were stored for three months using four treatments: (a) seed storage in fruits at +4˚C, (b) Storage in juice at +4˚C, (c) Storage at lab temperature, and (d) seed storage at fridge temperature +4˚C. The results showed that all spraying treatments were positive at postharvest, as compared with the control. However, treatment of seed storage inside the fruit gave the highest significant germination rate for all spraying treatments. Treatments of spraying with nutrients were the best. The viability of seeds considerably decreased for all treatments of seed storage at fridge temperature +4˚C, whereas germination was zero for seed stored in juice and seed stored at lab temperature.
References used
BARTON, L. V. The Storage of Citrus Seeds. Contrib. Boyce Thomp. Inst.13, 1943, p 47-55
CASTLE, W. S; FERGUSON, J.J. Citrus Rootstocks and their on-site Evaluation. Horticultural Sciences Department, Florida cooperative Extension Service, 2003, p1-5
CHAPOT, H. Remarques Swata Germination des Pepins de Poncirus trifoliate Fruit. vol 10, n 10, 1955
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Sour orange (Citrus aurantium L.) seedlings were sprayed three times a
season with four levels of urea (45 % N) (2.5, 5.0, 7.5 and 10.0 g/L) and two
levels of ascorbic acid (150 and 300 g/L), each alone or in combinations.
Meanwhile the seedlings
of control treatment sprayed with distilled water
during 2010 growing season, twenty days intervals between each spray and
another. Results obtained at the middle of October of the same season,
indicated that the foliar spray with urea at the concentrations of 5.0, 7.5 and
10.0 g/L significantly increased leaves N and chlorophyll concentrations, leaves
number, seedling leaves area, seedlings height, main stem diameter and leaves
fresh and dry weight, especially at the foliar spray with 10.0 g/L. The means of
these parameters were 3.19%, 66.80 SPAD, 146.66 leaves/seedling, 3700.00
Cm², 83.66 Cm, 4.50 mm, 4.70 g, 1.53 g, respectively. Meanwhile ascorbic acid
spray at two concentrations unsignificantly affected all parameters, except
leaves chlorophyll content, leaves number and seedling leaves area. Most
treatments of combinations spray with urea and ascorbic acid significantly
affected all studied parameters, especially the treatment of foliar spray of urea
and ascorbic acid at a concentration of 10.0 g/L and 300 mg/ L, which gave the
highest means of leaves N concentration, leaves number, seedling leaves area
and leaves fresh and dry weights, and it unsignificantly differs from the
treatments which gave the highest means of seedlings height, main stem
diameter and percentage of leaves dry matter weight .
This research was conducted during 2010-2011 growing seasons on 15 years old
trees of “Washington Navel” variety grafted on Citrus aurantium (sour orange) stock and
planted in the village of “Al-hinnady” in Lattakia. To determine the appropriate pr
eharvest
and post-harvest treatments to get the most production and better quality of fruits.
The experiment was conducted during the two seasons (2015 , 2016 ) on the Lemon trees
cv (Meyer ) aiming at studying the effect of the foliar spraying with the nutrients ( boron ,
zinc and iron ) on physical and chemical properties of the fruits Th
ese nutrients were
sprayed separately or as a mixture .
The average of each of the physical properties of the fruit (length , width , firmness,
volume and weight of the fruit ) , in addition to rind thickness and the fruits ` juice volume,
,the chemical properties of the fruit juice (total soluble solids, total sugars, total acidity,
vitamin C) were studied. An increase was observed in all the studied parameters in the
sprayed treatments compared to the control from( 6.37%- 3.33% -0.37% -
34.57mg%)to(9.33% -4.88% -1.89% -43.5%) in the first season and( 9.75% 5.87- 3.32% -
45%) in the second season, respectively. As a result of the statistical analysis, there were
significant differences between all the studied treatments and the control with overpass of
the treatment of the three elements (iron chelate + boron oxide + zinc chelate ) of all
treatments in the most of the studied figures in both seasons. Statistical analysis of the fruit
rind thickness showed the absence of the significant differences among the studied
treatments.
Vitamin C concentration was studied in samples of infant formula from 5 companies
(referenced A-E) using the 2,6-Dichlorophenolindophenol titration (AOAC, 2006) method.
Results revealed that ascorbic acid content in formulas D and C was the closest
to its
recommended daily intake (RDI) and to the concentrations which are mentioned on the
label of the samples. Storage conditions at room temperature or in the refrigerator did not
affect ascorbic acid levels. In comparison to vitamin C concentrations in milk dissolved in
tap water, its levels decreased when water was warm (40°C) or hot (100°C), and its
concentrations further declined in dissolved form kept for two hours after preparation.
The research was conducted in plastic green house for the 2013-2014, in Alqangerh
village, about 5 Km from the city of latakia, in order to study the effect of spraying the
leaves with some humic compounds and amino acids on growth and production o
f hybrids
of cucumber (Novo,Dorruk).
Spraying leaves with three organic fertilizers are (Huzone, Mol mixs), and two boats
Dbalin and Amino vega (an amino acid).
The results showed that all treatments of leaves spraying with organic fertilizer geve
better resultus with significant differences than the control treatment in all the studied traits
of both hybrids: (stem length, number of branches/plant, number of leaves/plant, leave area
cm2, the number of flowers on the stem, number of fruits on the stem, number of floral
branches, number of fruits on the branches).The treatment of spraying achieved with
mixture of humic compounds and amino acids increase with significant differences in both
the number of leaves/plant, number of branches/plant, the plant's stem length and number
of fruit on the stem in the hybrid Novo. while the treatment of spraying achieved of hiozon
increase with significant differences the number of branches/plant, the number flowers on
the branches and number of fruits on the branches was in the hybrid Dorok. As for the
early production and total production, the treatment of spraying with mixture of humic
compounds and amino acids with significant differences on other transaction when both
hybrids Novo and Dorruk amounted, respectivety (5 ، 4,1 kg/m2 ; 16 ، 14,8 kg/m2 ).
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