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تنوع جغرافیایی صفات بذر، برگ و نونهال بادامک (Amygdalus scoparia) در استان فارس | ||
| تحقیقات جنگل و صنوبر ایران | ||
| مقاله 13، دوره 26، شماره 1 - شماره پیاپی 71، فروردین 1397، صفحه 129-142 اصل مقاله (788.35 K) | ||
| نوع مقاله: علمی- پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijfpr.2018.116147 | ||
| نویسندگان | ||
| مسعود باباییان1؛ داوود آزادفر* 2؛ محمدهادی پهلوانی3؛ زهره سعیدی4؛ محمدحسین ارزانش5 | ||
| 1دانشجوی دکتری، گروه جنگلشناسی و اکولوژی جنگل، دانشکده علوم جنگل، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران | ||
| 2دانشیار، گروه جنگلشناسی و اکوژی جنگل، دانشکده علوم جنگل، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران | ||
| 3دانشیار، دانشکده تولیدات گیاهی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران | ||
| 4دکترای جنگلداری، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران | ||
| 5استادیار پژوهش، بخش تحقیقات آب و خاک، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان گلستان، گرگان، ایران | ||
| چکیده | ||
| مطالعه تنوع جغرافیایی در درون گسترشگاه بومی هر گونه جنگلی، اولین گام منطقی برای مطالعات ژنتیکی است. بادامک (Amygdalus scoparia Spach) گونهای چندمنظوره با دامنه پراکنش گسترده در بیشتر نواحی رویشی ایران است. بهمنظور بررسی تنوع جغرافیایی این گونه، 19 صفت زیستسنجی بذر، برگ و نونهال از هفت جمعیت طبیعی آن در استان فارس اندازهگیری و مقایسه شد. بر اساس نتایج، تفاوتهای معنیداری بین جمعیتهای مورد مطالعه و برای کلیه صفات مورد بررسی مشاهده شد. وزن 100دانه، مساحت برگ و تعداد ساقه بیشترین تنوع را بین صفات مورد مطالعه نشان دادند. صفات بذر همبستگی مثبت و معنیداری را با میانگین بارندگی سالانه نشان دادند. همبستگی بین صفات زیستسنجی و عاملهای ژئوکلیماتیک نشان از وجود تنوع کلاینی در بعضی از صفات بذر و برگ داشت. ابعاد برگ نونهالها بهتدریج از جمعیت شمال به جنوب و ارتفاع نونهالها از جمعیت شرق به غرب استان فارس کاهش یافت. این بدان معنی است که گیاه در مرحله نونهالی، تنوع دوسویهای را با عرض و طول جغرافیایی نشان میدهد. تجزیه به مؤلفههای اصلی و تجزیه خوشهای، جمعیتها را در چهار گروه مجزا قرار داد و جمعیتهای نواحی با بارندگی زیاد را از جمعیتهای نواحی با بارندگی کم جدا کرد. همچنین، نتایج نشان داد که بادامک از راهکارهای سازشی در پاسخ به کمبود آب استفاده میکند. | ||
| کلیدواژهها | ||
| پروونانس؛ تنوع درونگونهای؛ تنوع کلاینی؛ صفات زیستسنجی | ||
| عنوان مقاله [English] | ||
| Geographic variation in seed, leaf and seedling traits of wild almond (Amygdalus scoparia Spach.) in Fars province | ||
| نویسندگان [English] | ||
| Masoud Babaeiyan1؛ Davoud Azadfar2؛ Mohammad Hadi Pahlevani3؛ Zohreh Saeedi4؛ Mphammad Hossein Arzanesh5 | ||
| 1Ph.D. Student, Department of Silviculture and Forest Ecology , Faculty of Forest Science, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran | ||
| 2Associate Prof., Department of Silviculture and Forest Ecology , Faculty of Forest Science, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran | ||
| 3Associate Prof., Department of Plant Production, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran | ||
| 4Ph.D. Forestry, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran | ||
| 5Research Division of Soil and Water, Golestan Agricultural and Natural Resources Research and Education Center, AREEO, Gorgan, Iran | ||
| چکیده [English] | ||
| Knowledge about geographic variation within the native range of forest tree species is the logical first step in genetic studies. Wild almond (Amygdalus scoparia Spach.) is a multi-purpose species with a widespread geographic distribution in most of the vegetation regions of Iran. In order to study the geographic variation of wild almond, nineteen biometric features of seed, leaf and seedling from seven natural population of this species in Fras province were measured. Significant differences were observed among the populations for all of the studied characteristics. Hundred seed weight, leaf area and number of stems showed maximum variation among the studied traits. Seed traits presented a significant positive correlation in terms of mean annual rainfall. Correlation analyses between biometric traits and geoclimatic factors indicated the existence of clinal variation in some seed, leaf and seedling traits. Seedling leaf morphometric (dimension) traits decreased gradually from north to south populations; while seedling height declines from east to west populations. That means the geographic variation of the plant at the seedling stages reveals a two- way variation with the latitude and longitude. Principal component analysis (PCA) and cluster analysis of data revealed four distinct groups of populations, and separated populations of high rainfall area form that of lower rainfall area. Results also revealed that A. scoparia uses adaptive strategies in response to water deficit. | ||
| کلیدواژهها [English] | ||
| Biometric traits, clinal variation, intra-specific variation, provenance | ||
| مراجع | ||
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