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Monitoring the development of cotton (gossipier barbdense l.) using emission spectra of chlorophyll fluorescence
المؤلفون المشاركون
Ahmad, A. M.
Kafi, S. T.
Medani, I. M. K.
Ali, A. K. Sabir
المصدر
العدد
المجلد 2، العدد 2 (31 أغسطس/آب 2009)، ص ص. 103-111، 9ص.
الناشر
جامعة اليرموك عمادة البحث العلمي و الدراسات العليا
تاريخ النشر
2009-08-31
دولة النشر
الأردن
عدد الصفحات
9
التخصصات الرئيسية
الموضوعات
الملخص EN
This work was proposed to monitor the growth and development of cotton(Gossypium barbadense L.) under different environmental conditions using emission spectra of chlorophyll a fluorescence from the intact leaves.
The emitted fluorescence signal by cotton plants was measured using spectrometer/graphic and data analysis software.
Cotton was grown in the summer season under sunlight exposure i.e.
summer conditions, whereas in winter conditions the plants were grown in a shaded area.
Both groups of plants were irrigated by tap water.
Winter conditions exhibit environmental stress of temperature and light intensity.
Monochromatic blue light of 450 nm was used as an excitation source to induce the chlorophyll fluorescence emission at 685 nm and 733 nm.
The peak intensity ratio (P.I.R.), which is the ratio between maximum emitted light intensities at 685 nm and 733 nm respectively (IF685/IF733), and the area ratio (A.R.) which is the ratio between the areas under the curves of the two emission lines were used for monitoring the development of cotton, from the germination until the flowering.
The results revealed that the summer conditions gave a faster seed germination rate and the best growth and development of cotton, while the stressing winter conditions expressed in delayed seed germination, poor growth that led to failure of flowering and immaturity.
The peak intensity ratio and area ratio for the summer and winter conditions were found to follow linear relationships.
The line slopes of the peak intensity ratio and area ratios were1.36 and 0.46 and the intercepts were 0.04 and 0.04 respectively.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Kafi, S. T.& Medani, I. M. K.& Ahmad, A. M.& Ali, A. K. Sabir. 2009. Monitoring the development of cotton (gossipier barbdense l.) using emission spectra of chlorophyll fluorescence. Jordan Journal of Physics،Vol. 2, no. 2, pp.103-111.
https://search.emarefa.net/detail/BIM-266241
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Ahmad, A. M.…[et al.]. Monitoring the development of cotton (gossipier barbdense l.) using emission spectra of chlorophyll fluorescence. Jordan Journal of Physics Vol. 2, no. 2 (2009), pp.103-111.
https://search.emarefa.net/detail/BIM-266241
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Kafi, S. T.& Medani, I. M. K.& Ahmad, A. M.& Ali, A. K. Sabir. Monitoring the development of cotton (gossipier barbdense l.) using emission spectra of chlorophyll fluorescence. Jordan Journal of Physics. 2009. Vol. 2, no. 2, pp.103-111.
https://search.emarefa.net/detail/BIM-266241
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references : p. 110-111
رقم السجل
BIM-266241
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر
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