Morphological comparison of Ambrosia psilostachya in different habitats of Bandar-Anzali (Guilan province, north of Iran)

Document Type : Research Paper

Authors

1 PhD Student of Agronomy, Guilan University; and Expert of Jahad-e-Agriculture Organization, Guilan, Iran

2 Research Assistant Prof., Plant Protection Research Department, Guilan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Rasht, Iran

Abstract

This study was done to compare the plant morphology of Ambrosia psilostachya DC. (ragweed) in four habitats of roadsides (1), paddy field margins (2), around residential areas (3) and coastal areas (4) in Bandar-e Anzali (Guilan province, north of Iran) in 2019. Sampling was random in five growth stages with 10 plants in each habitat. The results indicated that, the highest biomass, plant height and inflorescence length was in the habitats of (2) & (4), and the highest inflorescence numbers was in (3) & (2). The maximum plant biomass in the habitats of (2), (1) & (4) was 110 days, and in (3) was 82 days after the emergence and then the plant entered the reproductive phase. The trend of plant height increased in the habitat of (1) continued up to 69 days, and in (2) & (4) continued up to 110 days after emergence and then decreased while in habitat of (3), the trend was linear and continued until November. The beginning of flowering was in mid-July in all habitats. The increasing trend of number of flowering stems in habitats of (3) & (4) was up to 82 days after emergence, but in (2) & (1) had a linear trend and continued until November.
 
 

Keywords

Article Title [Persian]

مقایسه ریخت‌شناسی Ambrosia psilostachya در زیستگاه‌های مختلف شهرستان بندر انزلی (استان گیلان)

Authors [Persian]

  • رقیه جمائیلی کلویر 1
  • سمیه تکاسی 2
1 دانشجوی دکتری زراعت، دانشگاه گیلان و کارشناس سازمان جهاد کشاورزی گیلان، رشت، ایران
2 استادیار پژوهش بخش تحقیقات گیاه‌پزشکی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان گیلان، سازمان تحقیقات، آموزش و ترویج
Abstract [Persian]

این بررسی، جهت مقایسه ریخت‌شناسی گیاه مهاجم Ambrosia psilostachya در مراحل مختلف رشد از چهار زیستگاه حاشیه جاده (1)، زمین‌های اطراف شالیزار (2)، مناطق مسکونی (3) و زمین‌های ساحلی (4) شهرستان بندر انزلی، در سال 1398 اجرا شد. نمونه‌برداری در پنج مرحله رشد آمبروزیا و 10 بوته از هر زیستگاه به صورت تصادفی انجام شد. نتایج نشان داد که بیشترین تولید زی‌توده، ارتفاع بوته و طول گل‌آذین نر گیاه در زیستگاه (2) و (4) و بیشترین تعداد گل‌آذین نر در زیستگاه (3) و (2) بود. همچنین، حداکثر زی‌توده گیاه در زیستگاه‌های (2)، (1) و (4) در زمان 110 روز و در زیستگاه (3) در زمان 82 روز پس از سبز شدن گیاه بود و پس از آن، گیاه وارد فاز زایشی شد. روند افزایش ارتفاع بوته‌ها در زیستگاه (1) تا زمان 69 روز و در زیستگاه‌های (2) و (4) تا 110 روز پس از سبز شدن ادامه داشت و پس از آن کاهش یافت. در زیستگاه (3) نیز روند تغییرات افزایش ارتفاع خطی بود و تا رسیدگی کامل بوته‌ها (آبان) ادامه داشت. ظهور گل‌آذین نر در چهار زیستگاه تقریبا در اواسط تیر بود. روند افزایش تعداد ساقه گل‌دهنده در زیستگاه‌های (3) و (4) تا 82 روز پس از سبز شدن بود، ولی در زیستگاه‌های (2) و (1) روند خطی بود و تا پایان دوره رشد (آبان) گیاه ادامه داشت.

Keywords [Persian]

  • تهاجم
  • زی‌توده
  • فنولوژی
  • کاسنیان
  • گیاه غیربومی

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History

  • Receive Date: 22 May 2021
  • Revise Date: 17 July 2021
  • Accept Date: 18 July 2021

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