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Register a new userA Morphological and Physiological Study of Some Types of Pyrus Syriaca in Al-Qurdaha Area
دراسة مورفولوجية و فيزيولوجية لبعض طرز الأجاص السوري Pyrus syriaca. Boiss في منطقة القرداحة
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Tishreen University ورقة بحثية
Publication date
2014
fields
Groves
and research's language is
العربية
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أجريت الدراسة على نوع الكمثرى السورية Pyrus syriaca. Boiss المنتشر بشكل بري في منطقة القرداحة في محافظة اللاذقية خلال عامي 2013-2012م . تمت دراسة 9 طرز مظهرية منتشرة في مواقع مختلفة (عين العروس – ديرحنا - بسين) حيث بينت النتائج وجود اختلافات في بعض الصفات من أصل 13 صفة مظهرية مدروسة . اذ أظهر التحليل العنقودي انقسام الطرز المدروسة إلى مجموعتين رئيسيتين : ضمت المجموعة الاولى الطرز ( P1,P2,P3,P4,P5,P6 ) بينما ضمت المجموعة الثانية الطرز P7,P8,P9)). بدورها انقسمت المجموعتان الرئيسيتان إلى تحت أربع مجموعات و التي يمكن اعتبارها طرزاً مظهرية مستقلة كما يلي : الرئيسية الأولى و ضمت تحت المجموعة الأولى و الثانية بقيم تشابه 0.62 حيث شملت تحت المجموعة الأولى الطرز ( P1,P2,P3,P4,P5 ) مرموز لها بالرمزA , و تحت المجموعة الثانية P6 المرموز لها بالرمز B. الرئيسية الثانية : ضمت أيضاً تحت مجموعتين بقيم تشابه 0.77 شملت تحت المجموعة الأولى الطرز P7,P9 المرموز لها بالرمز C و تحت المجموعة الثانية P8 المرموز لها بالرمز D. كذلك اظهرت الدراسة وجود تباين في نسبة إنبات بذور الطرز المدروسة اذ حققت بذور و أجنة الطراز P9 أعلى نسبة إنبات , في حين أعطت بذور و أجنة الطراز (P6) أسرع نسبة إنبات .
A study was conducted on one type of Syrian pears ‘Pyrus syriaca. Boiss’ which is widespread in Al-Qardahah area/Lattakia during 2012-2013. 9 superficial models were studied, these are scattered in different locations (Ein Al Aaros , Derhana, and Bsin). The results revealed the existence of differences in some of the characteristics, out of 13 morphological studied characteristics. A cluster analysis showed a division in the studied models. Two main groups can be distinguished: the first group included the following models (P1, P2, P3, P4, P5, P6), whereas the second group included the following models (P7, P8, P9). These two main groups are further divided into 4 subgroups which can be considered independent morphological Models. The first main group contains the first and second subgroups with a similarity value 0.62. The first subgroup contains P1, P2, P3, P4, P5, and it is symbolized as A; while the second subgroup contains P6 and it is symbolized as B. The second main group contains the first and second subgroups with a similarity value 0.77. The first subgroup contains P7, P9 and it is symbolized as C; whereas the second subgroup contains P8 symbolized as D. The research indicates that there is a difference in the seed germination percentage of the studied models. The seeds and embryos of P9 gave the highest germination percentage, while the seeds and embryos of P6 gave the fastest germination percentage.
References used
AJAYI, N.O. Rapid determination of leaf area in ovate vegetable leaves by liner measurements.Jornal of horticultural science. 65,1,1990
DOUAY,F. Etude experimental de la germination et pluse 27 particulierment de L' activation Des semences de 1',olivire(Oleauropaea L), the'se, univ,AixMarselle III, 1980.167p
(HARRINGTON, J.F. The effect of temperature on the germinationof several kinds of vegetable seed, XVITH; Inter, horticult; Cong, 1962. (bruxells92-441
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This study was conducted on the type of the Syrian pear, Pyrus syriaca. Boiss spread wildly in the Qardaha area in Lattakia governorate during the years 2012-2013 AD. Nine phenotypic phenotypes scattered in different locations (Ain Al-Arous - Deir Hanna - Basin) were studied, where the results showed that there were differences in some traits out of 14 studied phenotypic traits.
This research aims at studying the effect of irrigation with different levels of NaCl on
the growth and development of Syrian pears (Pyrus syriaca). The results showed that:
1. Salt stress reduced chlorophyll content (a,b and a+b) in salt treatment
s compared to
the control , which contained 67.48 mg/g (a), 111.62 mg/g (b) and 204.76 mg/g (a+b),
while 1750 ppm of NaCl treatment contained 49.34 mg/g (a), 49.86 mg/g (b) and 158.77
mg/g (a+b) respectively. Treatment with 500 ppm of NaCl increased significantly
chlorophyll content compared to other salt treatments.
2. Leaves content of proline increased with increasing NaCl levels. It reached 870.8
ng/g when irrigation water contained 1250 ppm of NaCl, while it decreased in other salt
treatments. Leaves dry matter increased with the increase salt levels (24.50% for the
control, and 44.86% for 1750 ppm of NaCl).
This research was conducted in seedling area belonging to Tishreen University and
in the Coast seedling belonging to Agricultural Directorate in Lattakia. Results has shown
that, the pear variety Cocia grafted on pear Syrian rootstock was significa
ntly better than
pear variety Williams and Quince variety Saidawi grafted on the same rootstock, where
the percentage of grafting were 100%, 90% and 66.67% consequently, and in the next year
93.33%, 76.67% and 54.00% consequently. Results has shown a good agreement between
a variety Cocia and a used rootstock in comparison with the tow other varieties. The
results of analytical calculation has shown that, the variety Cocia was better than the tow
other varieties Williams and Saidawi in graft-height, also, Williams variety was better
than Saidawi variety, and this confirm that, the Cocia variety in medium growth when it
grafted on pear Syrian rootstock, whereas, Williams variety was in poor growth and
Saidawi variety was very poor in growth when they were grafted on the same rootstalk
especially in the first years of grafting.
The study was conducted in four sites belonging to the Sheikh Badr district in Tartous
province. Ten different types were identified according to international standards. During
the 2016 and 2017 growth seasons, readings were recorded for phenotypi
c parameters as
well as physical and chemical analysis of fruit clusters. The studied types differed in many
characteristics. The results of the cluster analysis showed the distribution of the studied
types in two groups with a variance of 93%. The mean weight of the cluster varied
between the medium (349 g) and the large (1140.45 g). The ratio of total dissolved solids
(TSS) between the low (12.75%) and high (18.82%). the acidity between the very low
(3.53 g/l) and medium (6.38 g/l).
This research aimed to study the natural regeneration of Pinus brutia in Qurdaha
region, and to determine the most important factors affecting the regeneration. 42 circular
samples were taken, the area of each sample was 400m2. The following measur
ements were
taken: geographic coordinates of each sample's centre, altitude, aspect, the slope, forest
litter thickness, the proportion of gravels, stones and rocks, tree, bushes and herb cover.
Forest inventories were achieved using Braun-Blanquet method. Which, the number of
sample seedlings, the seedling height, seedling diameter, the seedling age, burning trees
and alive trees of Pinus brutia were registered. The results showed a significant negative
effect of slope and a significant positive effect of herb cover, where the percentage of data
classification by the model was reached 74.4%, while the Nagelkerke R2value was 37%.
The negative effect of the slope comes from increasing the risks of soil erosion and the loss
in their nutritional elements. In contrast, the positive effect of herbal coverage is the
contribution to reducing the risks of summer drought that can be affect the seedlings.
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