تأثير الرش بمحلول الإثيفون Ethephon في السلوك الجنسي لنبات الكوسا Cucurbita pepo L. وإنتاجيته
Abstract
جرت دراسة تأثير الرش المنفرد أو المتكرر بمحلول الإثيفون تركيز 250 ، 500 مغ/ل في السلوك الجنسي للهجين " مبروكة " من الكوسا وكمية المحصول خلال الموسم الربيعي لعام 2006.
أظهرت نتائج الدراسة أن الرش المتكرر ثلاث مرات، وذلك بعد كل من الورقة الأولى، والثالثة والخامسة بمحلول الإثيفون تركيز 500 مغ/ل أدى إلى خفض النسبة الجنسية ( نسبة الأزهار المذكرة /المؤنثة) وتقليل عدد العقد غير الثمرية، مقابل زيادة عدد الأزهار المؤنثة، نسبة الأزهار المؤنثة/الكلية
عدد الثمار على النبات، وإنتاجية النبات.
كما أظهرت النتائج وجود علاقة ارتباطيه إيجابية قوية بين إنتاجية النبات وكل من عدد الأزهار المؤنثة ( r = + 0.98 ) ، ونسبة الأزهار المؤنثة / الكلية ( r = + 0.91 ) ، وعدد الثمار على النبات
( r = + 0.99 ). بينما كانت العلاقة سلبية قوية مع كل من النسبة الجنسية ( r = - 0.8 )، وعدد العقد غير الثمرية (r = - 0.95 )، وعدد الأزهار المذكرة على النبات ( r = - 0.88 ).
The effect of singular or repeated foliar by two concentrations of ethephon solution (250 and 500 mg/l) on sex expression of squash hybrid "Mabrouka" and its productivity was studied. This study was conducted during the spring season 2006.
Results showed that the foliar spray by ethephon solution (500 mg/l)
3 times after the 1st, 3ed, and 5ed leaf formation decreases the sexual ratio
(male/female flowers) and the number of non fructifying nodes. In contrast, the number of female flowers, the female flowers/total flowers ratio, the number of fruits / plant, and the plant productivity increased.
The results also showed a strong positive correlation between plant productivity and the number of female flowers ( r = 0.98), female/total flowers ratio ( r = 0.91) and the number of fruits/plant ( r = 0.99); whereas there was a strong negative correlation for the male/female flowers ratio ( r = -0.8), the number of non fructifying nodes (r = -0.95), and the number of male flowers /plant ( r = -0.88).
Downloads
Published
How to Cite
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
The authors retain the copyright and grant the right to publish in the magazine for the first time with the transfer of the commercial right to the Tishreen University Journal for Research and Scientific Studies - Biological Sciences Series
Under a CC BY- NC-SA 04 license that allows others to share the work with of the work's authorship and initial publication in this journal. Authors can use a copy of their articles in their scientific activity, and on their scientific websites, provided that the place of publication is indicted in Tishreen University Journal for Research and Scientific Studies - Biological Sciences Series . The Readers have the right to send, print and subscribe to the initial version of the article, and the title of Tishreen University Journal for Research and Scientific Studies - Biological Sciences Series Publisher
journal uses a CC BY-NC-SA license which mean
You are free to:
- Share — copy and redistribute the material in any medium or format
- Adapt — remix, transform, and build upon the material
- The licensor cannot revoke these freedoms as long as you follow the license terms.
- Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- NonCommercial — You may not use the material for commercial purposes.
- ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.