Seed born fungi associated with birch trees in Northern forests of Iran
Message:
Abstract:
Birch is one of the most important trees in the northern forests which presently face extinction. Natural regeneration of these valuable trees is affected by various constraints, including pests and fungal diseases. In order to isolate and identify seed born fungi associated with Betula, seeds of 2 B.litwinowii and B.pendula was randomly collected from mature trees in mazandaran and golestan provinces. Seeds were surface sterilized with 70% ethanol and 1% sodium hypochlorite. Ten seeds in 5 replications plated on potato dextrose agar. Seed mycoflora was identified on the basis of spore characteristics, size, color and identification keys. A number of fungi including: Fusarium oxysperum, Alternaria alternate, Trichothecium roseumm, Amblyosporium echnolatum, Penicillum implicatum and Trichodema harzianum were isolated and identified and their frequency and incidence were recorded. The fungi T. harzianum, P.implicatum and A.alternata were externally observed with 34.5, 27.8 and 24.6% incidence, respectively and T.roseumm was observed after germination with 20.15% incidence. Results indicated that seeds can infect birth seeds externally or internally. This is the first report of fungi associated with birch seeds in Iran.
Language:
Persian
Published:
Iranian Journal of Forest and Range Protection Research, Volume:10 Issue: 2, 2013
Page:
177
magiran.com/p1245988  
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 990,000ريال می‌توانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
دسترسی سراسری کاربران دانشگاه پیام نور!
اعضای هیئت علمی و دانشجویان دانشگاه پیام نور در سراسر کشور، در صورت ثبت نام با ایمیل دانشگاهی، تا پایان فروردین ماه 1403 به مقالات سایت دسترسی خواهند داشت!
In order to view content subscription is required

Personal subscription
Subscribe magiran.com for 50 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!