تاثیر تنش شوری بر انباشتگی یون، فتوسنتز و محتوای متابولیت های سازگار در 4 ژنوتیپ انگور

نویسندگان

1 گروه زیست شناسی، دانشکده علوم، دانشگاه ارومیه، ایران

2 مرکز آموزش عالی شهید باکری میاندوآب، دانشگاه ارومیه، ایران

چکیده
تحمل به شوری 4 ژنوتیپ انگور ( قره اوزوم، حسینی، آق اوزوم و کشمشی) تحت شرایط شوری ( 25، 50 و 100 میلی مولار) مطالعه گردید. فاکتورهای رشدی تحت شرایط شوری به صورت معنی داری (P<0.05) کاهش یافت، در حالی که محتوی یون های سدیم و کلر افزایش یافت. در تمامی تیمارهای شوری انباشتگی کلر نسبت به سدیم بیشتر بود. قره اوزوم کمترین و کشمشی بیشترین محتوی کلر برگ را دارا بود. فتوسنتز، تعرق و هدایت روزنه ای تحت شوری کاهش یافت و بیشترین همبستگی را با محتوی کلر برگ دارا بود. کمترین کاهش در پارامترهای فتوسنتزی در قره اوزوم مشاهده گردید. تحت شوری متوسط (50 میلی مولار) محتوی قند محلول، پرولین و گلایسین بتائین در برگ همه ی ژنوتیپ ها افزایش یافت. نتایج به دست آمده در این مطالعه نشان داد قره اوزوم عملکرد و تحمل بیشتری تحت تنش شوری دارد و کشمشی در مقایسه با سایر ژنوتیپ‌ها حساس‌تر است.

کلیدواژه‌ها


عنوان مقاله English

The effect of salt stress on ion accumulation, photosynthesis and compatible solute contents in four grapevine (Vitis vinifera) genotypes

نویسندگان English

Shabnam Heidarpour 1
Nasser Abbaspour 1
Nayer Mohammadkhani 2
Sanaz Mosavi pornaki 1
1 Departement of Biology, Faculty of Science, Urmia University, Urmia, Iran
2 Shahid Bakeri High Education Center of Miandoab, Urmia University, Urmia, Iran
چکیده English

Salinity tolerance of four grape genotypes [GharaUzum, Hosseini, AghUzum and Keshmeshi] was studied under various salinity levels (25, 50 and 100 mM NaCl). As a result, growth indices were significantly (P<0.05) reduced by salinity, whereas Cl- and Na+ contents in the plant parts were increased. Cl- accumulation exceeded than that of Na+ in all treatments. Among the genotypes studied, GharaUzum and Keshmeshi had the lowest and highest Cl- concentrations in the leaf lamina, respectively. Photosynthesis and transpiration rate as well as stomatal conductance were greatly reduced by salinity and were shown to be highly correlated with leaf Cl- content. GharaUzum showed lower reduction in photosynthesis parameters. Soluble sugars, proline and glycine betaine contents increased in the leaf lamina of all the genotypes studied treated with moderate salinity (50 mM). In conclusion, the results showed that GharaUzum and Keshmeshi had the highest and lowest salt stress tolerance among the genotypes studied, respectively.


کلیدواژه‌ها English

osmolytes
Vitis vinifera
salt tolerance
Sodium
chloride
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  • تاریخ دریافت 18 خرداد 1405
  • تاریخ انتشار 18 خرداد 1405