تأثير معاملات ما قبل الحصاد على تغيرات المادة الجافة والمواد الصلبة الذائبة الكلية في ستة أصناف من البصل المخزن

Soliman Omar Gad-Allah; Saleh Abd EL-Rehim Mohamed; Ahmed Mohamed Ahmed Abd EL-Wahed

doi:10.54172/mjsc.v19i1.813

Authors

Soliman Omar Gad-Allah Horticulture Department, Faculty of Agricultural, Omar Almokhtar University, Al-Bayda, Libya.
Saleh Abd EL-Rehim Mohamed Horticulture Department, Faculty of Agricultural, Omar Almokhtar University, Al-Bayda, Libya.
Ahmed Mohamed Ahmed Abd EL-Wahed Horticulture Department, Faculty of Agricultural, Omar Almokhtar University, Al-Bayda, Libya.

DOI:

https://doi.org/10.54172/mjsc.v19i1.813

Abstract

Six onion varieties were evaluated under four planting spaces at the experimental farm of Faculty of Agriculture, Omar Al-Mokhtar University, Al-Beida, Al-Gabal El-Akhdar region, during the two successive seasons of 2006 and 2007. The tested Varieties were Red Amposta , El-Behairy, Red Creole, Giza 20, Giza 6 and Texas Early Grano. Plant distance between seedlings were 7.5, 10, 12.5 and 15cm, which equal 532,400,320,126 thousands seedlings per hectar,respectively.

The six varieties, four spacings, storing method and their various interactions were compared in respect to the percentages of total solibale solids and dry matter of bulbs at harvesting and during storage for six monthes under room and cold storage conditions at zero 0˚c.

The obtained results could be summarized as follow:

Cold storage significantly increased bulbs dry matter content comparing with room (ambient temp.) storage, however the storage methods had no effect on bulb TSS content allover the storage periods, in the two studied seasons.
Planting at 7.5 cm significantly increased bulb dry matter content at all storage periods (180 days), in the two seasons, comparing to the wider spacings, which were not significantly differed.
The studied varieties varied significantly concerning with bulbs dry matter and TSS contents, at all storage periods of the two seasons. The highest variety in its dry matter content at beginning and end storage period was Red Amposta (22.30 and 28.89 ,respectively), whereas, Texas Early Grano had the lowest content (11.56, 16.29%, respectively). The remained varieties recorded intermediate values.
Giza 20 variety occupied the first possion in its TSS content at the beginning of storage (13.39%) whereasTexas Early Grano was the latest one (7.44%). Giza 6, Red Amposta, and El-Beihary did not differ in their TSS content, at all storage periods as well as Giza 20, at some storage periods.
The narowest spacing (7.5 cm) significantly decreased bulb dry matter content, either in ambient or cold storage ,as compared with the wider spacings which were not significantly differed in their effects. Whereas, the opposite was true , regarding the total soluble solids through the storage periods.
The storage methods affected differentially the bulb dry matter and TSS contents, depending on varieties and storage periods.
The 7.5 and 10 cm spacings were the effective factor within all varieties, at all storage periods in two seasons, which reduced and increased, respectively, the dry matter content of bulbs.
Plant densities had no effect on TSS content of Red Amposta bulbs at all storage periods, but affected differentialy on the other varieties.
The triple interaction had significant and different effects on the percentages of dry matter, TSS.

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References

Abo-Zeid ,M.A. and M.A.Farghali.1996 Potassium fertilization and plant density effects on onion grown in different soils.Assiut.J.Agric. Sci.; 27(1):33-45.

AL-Rawi, K.M. and A.M.Khalf.Alla. 1980. Design and analysis of agricultural experiments. Textbook. EL-Mousl Univ. press. Ninawa, Iraq. 487 p.

Benkeblia,N. and N.Shiomi. 2004. Chilling effect on soluble sugars, respiration rate ,total phenolics peroxidase activity and dormancy of onion bulbs. Scientia Agricola., 61(3):281-285. (c.a CAB. Abstr. AN : 20043132466). DOI: https://doi.org/10.1590/S0103-90162004000300007

Brewster,J.L.1987. The effect of temperature on the rate of sprout growth and development within stored onion bulbs.Annals of Applied Biology Institute of Horticultural Research, Wellesbourne, CV359EF, UK., 111(2)463-467[EN,12ref.]. DOI: https://doi.org/10.1111/j.1744-7348.1987.tb01475.x

Chagas, S. J. de. R; G. M. de.Resende and L. V. Pereira.2004.Qualitative characteristics of onion cultivars in southern Minas Gerais Stste. Ciencia. e. Agrotecnologia., 28(1):102-106. (c.a CAB. Abstr. AN : 20043208517 ). DOI: https://doi.org/10.1590/S1413-70542004000100013

Cheema, K.L.;A.Saeed; M.Habib .2003. Bulb yield and other economic traits in eight onion cultivars under different ecological zones of Punjab Pakistan .Int. J. Agric. and Biol.,5(2):188- 190. (c.a CAB. Abstr. AN : 20033112716 ).

EL-Aweel,M.A.T.;A.A.Ghobashi and A.K. EL-Kafoury. 2000. Yield potential and storability of same onion cultivars (Allium cepa L.) in the sultanate of Oman. Assiut J. Agric. Sci.,31:(1).

EL-Gamili,A.E. 1996. Onion bulb production as affected by spacing between rows (plant density). Menofia J.Agric. Res.: 1323-1330.

EL-Shafie, M.W.1979.Onion varietal test under Libyan conditions.The Libyan J.Agric.,8:143-151.

El-Sheekh, H.M.;M.Y.Ibrahim and A.K.El-Kafoury. 1994.Influence of plant density, nitrogen fertilizer levels and their interaction on the growth, yield and storageability of onion. Zagazig. J. Agric.Res., 21(38): 873-884.

Farrag, M.M .1986. Growth regulators and plant density in onion production. Ph.D. Thesis, Fac.of Agric.EL-Minia Univ., A.R.E.

Khandagale,S.S.; N.D.Jogdande; V.S. Gonge; A.D.Warade and N.W. Futane.2005. Varietal performance in onion (Allium cepa). Int. J. Agric. Sci.,1(1):45- 46. (c.a CAB. Abstr. AN : 20063106427 ).

Moustafa, A.K.1979. Studies on the inter-relationships between some cultural practices and the yield of Behairy onion.M.Sc.Thesis, Fac.of Agric., Mansoura Univ.,Egypt.

Oukal, T.M.A.1999.Effect of some agricultural treatments on the productivity of onion plant in sandy soils.M.Sc. Thesis,Fac. Agri., Zagazig Univ.,Egypt.

Rizk, A.F. 1997. Productivity of onion plant (Allium cepa) as affected by method of planting and NPK application. Egyptian J. Hort. 24, No. 2, pp. 219-230.

Sharaf EL-Dien,M.S.2005.Physiological studies on onion plants. M. Sc. Fac. Agric. Zagazig Univ., ARE.

Singh, D. K.; J.P.N. Pandey and K.J. Srivastava.2003.Studies on the physico-chemical constituents of some important varieties of onion (Allium cepa).News Letter National Horticultural Research and Development Foundation., 23(1): 4-9.(c.a CAB. Abstr. AN: 200 33 13 8322).

Snedecor,G.V. and W.G.Cochran.1980. Statistical methods,12th Ed. Iowa State Univ. Press , Am. Iowa, USA.

Tariq. A.; Abdul-Bari and K. Mazullah. 2005.Assessment of post harvest losses of onion bulbs during storage at room condition. Sarhed. J. Agric.,21(2):189-191. (c.a CAB. Abstr. AN: 20053187016 ).

Villagran C.M. and G.M. Escaff. 1982. Effect of plant density and nitrogen fertilization on the yield and quality of onion bulbs.Agric., Tecnica, 42; 209-215. (c.a.Hort. Abstrr., 53; 5012).