تأثیر باکتری‌های محرک رشد بر شاخص‌های رشدی مورفولوژیکی پروونانس‌های گونۀ محلب (Cerasus mahaleb (L.) Mill)- (منطقۀ پژوهش: فریدونشهر)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانش‌آموختۀ دکتری، جنگل‌شناسی و اکولوژی جنگل، دانشکدۀ منابع طبیعی دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری

2 استادیار پژوهش، مرکز تحقیقات کشاورزی و منابع طبیعی استان اصفهان، سازمان تحقیقات، آموزش و ترویج کشاورزی، اصفهان

10.22059/jfwp.2022.337203.1203

چکیده

به‌منظور بررسی اثر تلقیح نونهال گونۀ محلب در ده پروونانس جنگل‌های شهرستان فریدونشهر استان اصفهان با مهم‌ترین باکتری‌های ریزوسفری محرک رشد گیاه بر شاخص‌های مورفولوژیکی گونۀ محلب، آزمایشی به‌صورت فاکتوریل در قالب طرح بلوک‌های کامل تصادفی با سه تکرار در گلخانه صورت گرفت، تلقیح نونهال‌ها با پنج سطح شامل عدم تلقیح باکتریایی (به‌عنوان شاهد)، تلقیح با باکتری‌های Bacillus sp.، Azotobacter sp.، fluorescens Pseudomonas و تیمار ترکیبی از سه باکتری محرک رشد (MIX) و محاسبۀ ویژگی‌های مورفولوژیکی نونهال‌های گونۀ محلب انجام گرفت. در بررسی صفات مورفولوژیکی نونهال‌ها تیمار ترکیبی (MIX) از باکتری‌ها در صفات طول ساقه (66/27 سانتی‌متر)، طول ریشه (61/70 سانتی‌متر)، قطر یقه (07/9 میلی‌متر)، وزن خشک اندام هوایی (62/21 گرم) و ریشه (45/28 گرم) و تعداد برگ (22 عدد) بهترین عملکرد را داشت و تنها در صفت سطح برگ (82/23 سانتی‌متر مربع) تیمار باکتری (fluorescens Pseudomonas) عملکرد بهتری از تیمار ترکیبی (MIX) نشان داد. نتایج نشان داد که ضعیف‌ترین عملکرد در بین تیمارهای باکتری محرک رشد مربوط به باکتری (Bacillus sp.) است. از بین ده منطقۀ بررسی‌شده، مناطق ذخیره‌گاه جنگلی چال‌خلیل 1 و 2 و همچنین پشتکوه سوم دورک 2 صفات مورفولوژیکی بهتری نسبت به مناطق دیگر در تلقیح با باکتری‌ها نشان دادند. در حقیقت تلقیح نونهال‌ها توسط باکتری‌های محرک رشد می‌تواند راهکاری مناسب به‌منظور تولید نهال سالم و قوی و همچنین استقرار بهتر و افزایش موفقیت نهالکاری در رویشگاه‌های آشفته و تخریب‌یافته این گونۀ محلب در جنگل‌های زاگرس باشد.

کلیدواژه‌ها


عنوان مقاله [English]

The Effect of Growth-Promoting Rhizobacteria on Morphological Growth Indices of Cerasus mahaleb (L.) Mill's Provenances - (Case study: Fereydunshahr)

نویسندگان [English]

  • Bahman Zamani Kebrabadi 1
  • Masoud Esmaeili Sharif 2
1 Ph.D. Forestry and Forest Ecology, Sari Agricultural Sciences and Natural Resources University, Sari, I.R. Iran.
2 Assist., Prof., Division of Natural Resources, Isfahan Agricultural and Natural Resources, Agricultural, Research, Education and Extension Organization, Isfahan, I.R. Iran.
چکیده [English]

In order to investigate the effect of inoculation of Cerasus mahaleb provenances in Fereydunshahr city of Isfahan with the most important rhizosphere bacteria stimulating plant growth on morphological indices of Cerasus mahaleb, a factorial experiment was planned in a completely randomized block design with three replications in a greenhouse. Inoculation of seedling with five levels including non-bacterial inoculation (as a control), inoculation with bacteria (Bacillus sp.), (Azotobacter sp.), (Pseudomonas fluorescens) and combination treatment of three growth-promoting bacteria (MIX) and calculation of characteristics morphological analysis of Cerasus mahaleb was performed. In the study of morphological traits of seedlings, combined treatment (MIX) of bacteria showed the best performance in stem length (27.66 cm), root length (70.61 cm), basal diameter (9.07 mm), shoot (21.62 g) and root (28.45 g) dry weight, and number of leaves (22). Only in leaf area (23.82 cm), bacterial treatment (Pseudomonas fluorescens) had better performance than MIX. The results showed that the weakest performance among bacterial growth stimulant treatments was related to bacteria (Bacillus sp.). Among the 10 study areas, Chal Khalil 1 and 2 forest reserve areas as well as Poshtkuh Durak 2 showed the best morphological traits compared with other areas in bacterial inoculation. In fact, inoculation of seedlings with growth-promoting bacteria can be a good way to produce healthy and strong seedlings as well as better establishment and increase the success of seedlings in disturbed and degraded habitats of this important species of Zagros forests.

کلیدواژه‌ها [English]

  • Growth promoting bacteria
  • Cerasus mahaleb
  • provenances
  • morphological traits
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