اثر مبدأ بذر و درخت مادری بر رشد و استقرار اولیة بلوط ایرانی (Quercus brantii) در یاسوج

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد جنگل‌داری دانشگاه یاسوج، ‌یاسوج، ایران

2 عضو هیئت علمی ‌‌دانشکدة کشاورزی و پژوهشکدة منابع طبیعی دانشگاه یاسوج، ‌یاسوج، ایران

3 عضو هیئت علمی‌‌ دانشکدة کشاورزی و پژوهشکدة منابع طبیعی دانشگاه یاسوج، ‌یاسوج، ایران

چکیده

چکیده
این تحقیق به‌‌منظور بررسی تأثیر مبدأ بذر گونة بلوط ایرانی بر صفات مورفولوژیک بذر و پارامتر‌‌های رویشی و زنده‌مانی نهال‏‌‌های گونة بلوط ایرانی در عرض‏‌‌های جغرافیایی مختلف زاگرس انجام شد. درختان مادری از سه رویشگاه زاگرس شمالی (بانه)، زاگرس میانی (خرم‏آباد)، و زاگرس جنوبی (یاسوج) انتخاب شدند و بذر آن‌ها در قالب طرح کاملاً تصادفی در یاسوج در زمین زراعی کاشته شد. سپس، صفات مورفولوژیک بذر و پارامتر‏‏های رویشی نهال، مانند ارتفاع، قطر یقه، تعداد برگ، و حجم در خرداد و مهر و زنده‏‏مانی نهال اندازه‏گیری شد. نتایج آنالیز واریانس نشان داد که در رویشگاه‏‏‏های مذکور تمام صفات مورفولوژی بذر، به‌جز قطر در 1/0 ابتدایی و تعداد در یک کیلوگرم بذر، اختلاف معنی‏داری با هم دارند. عرض‏‏‏های جغرافیایی بالا بیشترین قطر، قطر ناف، حجم بذر، و کمترین طول و نسبت طول به قطر را داشتند. صفات رویشی و زنده‏مانی نهال‏‏‏های حاصل از سه مبدأ بذر اختلاف معنی‏دار داشتند؛ به‏‏طوری که از نظر صفات رویشی و زنده‏مانی، نهال‏‏‏های بانه بیشترین مقدار را دارا بودند. نتایج همبستگی نیز نشان داد که قطر، قطر ناف، و حجم بذر همبستگی مثبت، اما طول، نسبت طول به قطر، و تعداد بذر در یک کیلوگرم همبستگی منفی با عرض جغرافیایی و صفات رویشی نهال دارند. بیشترین میزان نسبت تعداد برگ سبز به تعداد برگ کل را نهال‏‏‏های با مبدأ جنوبی داشتند. نتایج تجزیة خوشه‌ای و تجزیة تابع تشخیص نیز نشان داد که نهال‏‏‏های حاصل از بذور درختان مادری با مبدأ بذر بانه و قطر ناف بزرگ‏تر، از استقرار اولیة بهتری در یاسوج برخوردارند.

کلیدواژه‌ها

عنوان مقاله [English]

Effect of Seed Provenance and Mother Tree of Quercus branti Base on Primary Establishment in Yasuj

نویسندگان [English]

  • Khaled Karimi Hajipomagh 1
  • Roghayeh Zolfaghari 2
  • Sohrab Alvaninejad 3
  • Payam Fayyaz 2
1 M.Sc. Forestry Student of Yasouj University, Yasouj, I.R. Iran
2 Assistant Professor, Yasouj University, Yasouj, I.R. Iran
3 Assistant Professor, Yasouj University, Yasouj, I.R. Iran
چکیده [English]

This study was conducted to investigate the effect of provenance of Persian oak species on its acorn
morphological traits and growth and survival parameters in different latitudes of Zagros region.
Mother trees of three sites from northern (Baneh), central (Khoram-Abad) and southern (Yasuj)
Zagros region were selected and their acorns planted as a completely randomized design in common
garden in Yasuj. Acorn morphological traits and growth parameters of seedlings like height, collar
diameter, number of leaves and volume in June and September and survival of seedlings were
measured. Analyse of variance showed that all acorn morphological traits except acorn diameter at
first one of 0.1 height and number of acorn per kg had difference significant. High latitudes
provenance had highest value of width, navel diameter and acorn volume and lowest value of length,
length to width ratio. Growth and survival traits of seedlings from three provenances were
significantly different so that seedlings originated from Baneh were showed highest value growth and
survival traits. Results of correlation showed that width, navel diameter and acorn volume were
positively and length, length to width ratio and number of acorn per kg were negatively correlated
with latitude and growth traits of seedlings. The highest amount of vitality was belongs to seedlings of
southern Zagros. Results of cluster analysis also showed that seedlings germinated from mother trees
of Baneh and wide navel diameter of acorn had better primary establishment in Yasuj.

کلیدواژه‌ها [English]

  • growth parameters of seedling
  • morphological seed traits
  • Provenance
  • Quercus branti Lindl
  • Zagros

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