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Register a new userAssessment of local and introduced varieties of pear in Sweida
تقييم أصناف الأجاص المحلية و المدخلة في محافظة السويداء
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قُيم 20 صنفاً من الأجاص المحلي المدخل إلى السويداء بدءاً من عام 2007 حتى عام 2010 ، من حيث موعد الإزهار، و موعد نضج الثمار، فضلاً عن توصيف مورفولوجي دقيق و شامل للطرود و الأوراق و الأزهار و الثمار، و كذلك التحليل الكيميائي للثمار (نسبة المواد الـصلبة الذائبـة، و الـسكريات الكليـة و الأحادية، و الأحماض العضوية القابلة للمعايرة)، فضلاً عن قياس صلابة لب الثمرة، كما قُدرتْ إنتاجيـة الشجرة لكل صنف. بينت النتائج أن موعد الإزهار الأعظمي لمعظم الأصناف المدروسـة فـي منتـصف نيسان، فيما انقسمت الأصناف تبعاً لموعد نضج ثمارها إلى أصناف مبكرة تنضج خـلال شـهر تمـوز، و أصناف متوسطة تنضج خلال شهر آب، و أصناف متأخرة تنضج في النصف الثاني من شهر إيلـول، إلا أن صنف كونفرنس احتاج إلى إنضاج صنعي.
20 local and introduced varieties of pear grown in Sweida during 2007 to 2010 were assessed in terms of flowering time, maturity time, accurate morphological characterization for shoots, leaves, flowers and fruits and fruit chemical analysis (total soluble solids, total sugar and tetratable acidity) as well as to determine firmness of fruit flesh and tree yield. Results showed that flowering time was at mid April in most varieties, and the varieties were divided into three groups according to their mature date: early varieties maturated during July, mid varieties maturated during August and late varieties maturated during September. However, A variety of Conference was required artificial ripening.
References used
Barthelemy, D. and Y. Caraglio. 2007. Plant architecture: a dynamic, multilevel and comprehensive approach to plant form, structure and ontogeny. Ann. Bot. 99: 375- 407
Bessho, G. 2008. Trends in european pear production and cultivarc Choice in Japan. Acta Hort. 800: 349-352
Chen, J., W. Zhengfu, W. Jihong, W. Qiang, and H. Xiaosong. 2007. Chemical compositional characterization of eight pear cultivars grown in China. Food Chemistry, 104(1):268-275
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This investigation was conducted at the Pome and grapevine
Division in Sweida governorate in 2014-2015. Four introduced
pear cultivars (Anjou, Bartlett, Red Bartlett and Beurre Bosc) were
studied, through fruiting and growth organs, fertility, average of
fruit weight, and the yield at P< 0,05.
This research was carried out in the laboratories of the Atomic
Energy Commission Molecular Biology and Biotechnology
Department in Damascus to study the molecular characterization of
five of local and introduced grapes varieties which collected f
rom
the Pome and Grapevine Research Center in Sweida using 20
primer pairs of SSR.
Twenty apple varieties were evaluated in the germ plasm of the Agricultural
Scientific Research Center in Swaida for Morphological traits, bud honological
stages, days after full bloom, storability which were ranged between 2.5 – 8
months, and bes
t susceptibility (e.g. wooly aphid and powdery mildew), all
studied varieties showed low susceptibility to wooly aphid, while Jersy Mac
revealed high susceptibility to powdery mildew compared with the other
varieties. The yield of all varieties was studied, so, they divided into: high yield
varieties such Stark Earliest, Royal Gala and Golden 972; Good yield varieties
"Golden Delicious, Starking Delicious, and Granny Smith etc."; and moderate
yield varieties" Red Spur Delicious and Rome Beauty". Chemical analysis
(Total soluble solids and total sugars) were achieved for all studied apple
varieties. Apple Varieties were divided into five groups depending on Days
After Full Bloom (DAFB). The present investigation indicted the high
quantitative and qualitative traits of studied varieties which candidate for
credence and distribute them in suitable environmental areas in Syria.
The experiment was conducted at the Research Station of Middle Heights,
during 2014 and 2015 seasons. Three varieties of Quinoa were used i.e. Ames
13762, NSL 106398 and Ames 137, which were introduced from International
Center for Bio Saline Agri
culture (ICBA), and they were selected out of five
varieties that were grown as observation lines in 2013, to get one variety, high
forage and grain yields, also suitable for the local conditions. RCBD design
with four replications was used. The traits that were studied were: Earliness,
plant height, flowering at 50%, green forage, grain and dry matter yields.
Results indicated that there were highly significant (p≤0.01) differences
between seasons and varieties in respect to plant height, green forage, dry
matter and grain yields. While, no significant effect for the interaction between
varieties and seasons overall growth performances.
A laboratory experiment was conducted during 2002-003. The purpose was
to develop an effective and rapid screening tool to assess the genetic variability
for the response of some local barley varieties to polyethylene glycol- induced
osmotic stres
s at early growth stage. Also this will help to evaluate the relevance
of pre-exposure of barley seedlings to sub-lethal (induction) levels of osmotic
stress. This might enhance the capacity of seedlings to tolerate the lethal levels
of stress.
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