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A 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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 Publication date 2014
  fields Groves
and research's language is العربية
 Created by Shamra Editor




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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.


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Research summary
أجريت دراسة على نوع الكمثرى السورية Pyrus syriaca. Boiss المنتشر بشكل بري في منطقة القرداحة في محافظة اللاذقية خلال عامي 2012-2013. تمت دراسة 9 طرز مظهرية منتشرة في مواقع مختلفة (عين العروس، ديرحنا، بسين). أظهرت النتائج وجود اختلافات في بعض الصفات المظهرية المدروسة، حيث أظهر التحليل العنقودي انقسام الطرز المدروسة إلى مجموعتين رئيسيتين: ضمت المجموعة الأولى الطرز (P1, P2, P3, P4, P5, P6) بينما ضمت المجموعة الثانية الطرز (P7, P8, P9). انقسمت المجموعتان الرئيسيتان إلى أربع تحت مجموعات يمكن اعتبارها طرزاً مظهرية مستقلة. أظهرت الدراسة أيضاً وجود تباين في نسبة إنبات بذور الطرز المدروسة، حيث حققت بذور وأجنة الطراز P9 أعلى نسبة إنبات، في حين أعطت بذور وأجنة الطراز P6 أسرع نسبة إنبات. تهدف الدراسة إلى تحديد مواصفات بعض طرز الأجاص السوري المنتشرة في بعض مناطق محافظة اللاذقية وتقييم صفاتها بغية توصيفها للاستفادة منها مستقبلاً في عمليات التحسين الوراثي واستزراع الطرز ذات الأهمية الزراعية.
Critical review
دراسة نقدية: تعتبر هذه الدراسة مهمة لأنها تسلط الضوء على التنوع المورفولوجي والفيزيولوجي لنوع مهم من النباتات البرية في سوريا. ومع ذلك، يمكن توجيه بعض الانتقادات البناءة لتحسين الدراسة في المستقبل. أولاً، كان من الممكن أن تكون الدراسة أكثر شمولية إذا تم تضمين المزيد من المواقع الجغرافية لتغطية نطاق أوسع من التنوع البيئي. ثانياً، كان من الممكن استخدام تقنيات حديثة مثل التحليل الجيني لتأكيد النتائج المورفولوجية والفيزيولوجية. ثالثاً، لم يتم التطرق إلى تأثير العوامل البيئية المختلفة بشكل كافٍ على الصفات المدروسة، مما قد يؤثر على دقة النتائج. على الرغم من هذه النقاط، فإن الدراسة تقدم مساهمة قيمة في فهم التنوع البيولوجي لنوع Pyrus syriaca وتفتح الباب لمزيد من الأبحاث في هذا المجال.
Questions related to the research
  1. ما هي الأهداف الرئيسية للدراسة؟

    تهدف الدراسة إلى تحديد مواصفات بعض طرز الأجاص السوري المنتشرة في بعض مناطق محافظة اللاذقية وتقييم صفاتها بغية توصيفها للاستفادة منها مستقبلاً في عمليات التحسين الوراثي واستزراع الطرز ذات الأهمية الزراعية.

  2. ما هي المواقع الجغرافية التي شملتها الدراسة؟

    شملت الدراسة مواقع عين العروس، ديرحنا، وبسين في منطقة القرداحة بمحافظة اللاذقية.

  3. ما هي النتائج الرئيسية المتعلقة بإنبات البذور؟

    حققت بذور وأجنة الطراز P9 أعلى نسبة إنبات، في حين أعطت بذور وأجنة الطراز P6 أسرع نسبة إنبات.

  4. كيف تم تقسيم الطرز المظهرية في الدراسة؟

    تم تقسيم الطرز المظهرية إلى مجموعتين رئيسيتين، حيث ضمت المجموعة الأولى الطرز (P1, P2, P3, P4, P5, P6) بينما ضمت المجموعة الثانية الطرز (P7, P8, P9). انقسمت كل مجموعة رئيسية إلى تحت مجموعتين، مما يمكن اعتبارها طرزاً مظهرية مستقلة.


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.
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