اثر سالیسیلیک اسید بر جوانه‌زنی و رشد چمن فستوکا (Festuca rubra) و لولیوم (Lolium perenne) تحت شرایط تنش شوری

نوع مقاله : مقاله علمی-پژوهشی

نویسندگان

1 کارشناس ارشد علوم باغبانی، گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه کردستان، سنندج

2 استادیار گروه علوم باغبانی دانشکده کشاورزی، دانشگاه کردستان، سنندج

چکیده

فستوکای قرمز (Festuca rubra) و لولیوم چندساله (Lolium perenne) از مهم‌ترین چمن­های فصل سرد هستند که به‌عنوان پوشش سبز در سراسر جهان استفاده می­شوند. بذرهای فستوکا و لولیوم به‌مدت 12 ساعت در آب مقطر (شاهد) و 100 میلی­گرم در لیتر SA خیسانیده شدند. بذرها در مخلوط خاکی نمکی شده با غلظت­های مختلف NaCl (0، 40، 80 و 120 میلی­مولار) کشت شدند. درصد و سرعت جوانه­زنی با افزایش سطوح شوری کاهش یافت. لولیوم نسبت به فستوکا تحمل بیشتری در مقابل شوری در مرحله جوانه­زنی داشت. طول ساقه در لولیوم نسبت به فستوکا در هر دو شرایط شوری و غیر­شوری بیشتر بود. طول ساقه در هر دو گونه در شرایط شوری کاهش یافت. وزن خشک هر دو گونه در شرایط شوری و غیر­شوری به‌وسیله کاربرد SA افزایش یافت. در نهایت اثرات منفی شوری بر روی رشد به‌وسیله کاربرد SA کاهش یافت. 

کلیدواژه‌ها


عنوان مقاله [English]

Effect of Salicylic Acid on Red Fescue (Festuca rubra) and Perennial Ryegrass (Lolium perenne) Turfgrass Germination and Growth Under Salinity Stress

نویسندگان [English]

  • fardin nasri 1
  • naser ghaderi 2
چکیده [English]

Festucarubra and Lolium perenne are major cool-season turfgrasses which are used as turf grass around the world. Festuca and Lolium seeds were soaked for 12 h in distilled (Control) water and 100 mg l-1 SA. The seeds were sown in salinized soil mixture with 0, 40, 80 and 120 mM NaCl. The results showed that the seed germination percentage and germination velocity decreases significantly by increasing of salinity levels. Lolium was more tolerant than Festuca against salinity in germination stage. Stem length of Lolium was significantly higher than Festuca in saline and non-saline treatments. Stem length in both species were reduced under salinity conditions. Dry weights of both species were increased by salicylic acid application under saline and non-saline conditions. In conclusion, negative effects of salinity on growth were reduced by SA application.

کلیدواژه‌ها [English]

  • Salinity to lerance
  • Germination and tillering
  • Seedling growth
  • Cool-season turfgrasses
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