Effect of altitude level on photosynthetic parameters and chlorophyll pigments of Amygdalus haussknechtii L.

  • سال انتشار: 1399
  • محل انتشار: بیست و یکمین کنگره ملی و نهمین کنگره بین المللی زیست شناسی ایران
  • کد COI اختصاصی: BIOCONF21_0897
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 325
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نویسندگان

Ali Parvizi

Department of Biology, Ilam University, Ilam, Iran

Ali Asghar Hatamnia

Department of Biology, Ilam University, Ilam, Iran

Nayer Mohammadkhani

Shahid Bakeri High Education Center of Miandoab, Urmia University, Urmia, Iran

Hamid Reza Naji

Department of Forest Sciences, Ilam Universit, Ilam, Iran

چکیده

Amygdalus haussknechtii L. belong of the Rosaceae family that is distributed in large areas of Iran. In natural ecosystems, various factors such as altitude level affected the plants photosynthesis. Therefore, the aim of this study was to investigate the effect of altitude level on photosynthesis and chlorophyll pigments in A. haussknechtii L. Photosynthesis parameters (net photosynthesis and transpiration) were measured using a portable photosynthesis device from A. haussknechtii L. at three different altitude level of Qalajeh mountain in Ilam province. Also, content of chlorophyll a, chlorophyll b, total chlorophyll and carotenoids were also measured. The results shown that with increasing altitude, the rate of net photosynthesis and transpiration decreased. Also, the content of chlorophyll a, chlorophyll b and total chlorophyll pigments decreased with increasing altitude. There are a significant positive correlation (p< ۱) was observed between photosynthetic parameters (net photosynthesis and transpiration) and chlorophyll a, chlorophyll b and total chlorophyll pigments. However, unlike other photosynthetic pigments with increasing altitude the content of carotenoids has increased, which is actually a response to environmental stress. In general, increasing the altitude causes environmental stresses of the plants condition, including low temperature and soil drying, which resulting rate of photosynthesis and plant growth has decreased.

کلیدواژه ها

Net Photosynthesis, Transpiration, Carotenoids, Stress

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