بررسی خصوصیات مورفولوژیکی و فیزیولوژیکی گیاه استبرق (Calotropts procera L) در مناطق خشک و شور استان گلستان

نوع مقاله : پژوهشی

نویسندگان

گروه اصلاح نباتات و بیوتکنولوژی، دانشکده تولید گیاهی، دانشگاه علوم کشاورزی و منابع طبیعی، گرگان، ایران

چکیده

گیاه استبرق (Calotropts procera L.) متعلق به خانواده Asclepiadaceae و مقاوم به سطوح نسبتاً بالای خشکی و شوری است. اندام های این گیاه برای درمان بیماری­های مختلف استفاده می­شود. به­منظور بررسی پایداری و سازگاری این گیاه در اقلیم‌های خشک و شور استان گلستان در دانشگاه علوم کشاورزی و منابع طبیعی گرگان در سال‌های 1393 و 1394، بذرهای گیاه استبرق در سه منطقه گرگان، گنبدکاووس و آق‌قلا با درجه شوری و خشکی متفاوت در سه تاریخ (اول اسفند، اول فروردین و اول اردیبهشت) کشت شد. در طول فصل رشد، ارتفاع گیاه، تعداد، سطح و وزن خشک برگ، مقدار پرولین و کلروفیل اندازه‌گیری شد. بررسی داده‌ها از طریق تجزیه مرکب در قالب طرح بلوک کامل تصادفی انجام شد. نتایج نشان داد اثر مکان برای ارتفاع بوته، سطح و وزن خشک برگ و میزان پرولین معنی‌دار و اثر سال، تنها برای ارتفاع بوته و تعداد برگ معنی‌دار شد. اثر تاریخ کاشت و نمونه‌برداری برای تمامی صفات معنی‌دار گردید. طبق نتایج، صفات مهمی همچون میزان پرولین، کلروفیل، وزن خشک، سطح برگ و ارتفاع گیاه به‌عنوان مهم‌ترین صفات برای بررسی سازگاری و تعیین مکان مورد نظر گیاه معرفی گردید و مناسب‌ترین مکان کشت در استان گلستان، منطقه گرگان بود. تغییر تاریخ کاشت منجر به تغییر در میزان سازگاری و پایداری گیاه شد. بدین‌ترتیب، بهترین تاریخ، کاشت در اردیبهشت ماه بود. با توجه به نتایج، گیاه توانایی تحمل شرایط خشک و شور استان را دارا بوده و بر این اساس می‌توان از استبرق به‌عنوان یک گیاه جایگزین در مناطق خشک و شور استان استفاده نمود.

کلیدواژه‌ها


عنوان مقاله [English]

A study on the morphological and physiological traits of Stabragh (Calotropts procera L.) under drought and saline area of Golestan province

نویسندگان [English]

  • mostafa hamidi
  • Saeid Navabpour
  • abolfazl mazandarani
  • ahad yamchi
  • ali asghar nasrolahnejad
Plant Breeding and Biotechnology Department, Faculty of Plant Production, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
چکیده [English]

Stabragh belongs to the Asclepiadaceae family and is resistant to high levels of drought and salinity. Its organs have been used for the treatment of various diseases. In order to study the adaptation and stability of this plant under drought and saline conditions in Golestan province, Gorgan University of Agricultural Sciences and Natural Resources, plant seeds were cultivated in Gorgan, Gonbad, and Aghghala under different degrees of salinity and drought in February, March and April during 2014 and 2015. Plant height, leaf number and area, leaf dry weight, and proline and chlorophyll contents were measured were significant on all traits. Important traits such as proline, chlorophyll, fresh weight, dry weight, and plant height were introduced as the most important traits during the growth season. Data analysis was done through combined analysis of randomized complete block design. Results showed that the effect of regions on plant height, leaf area and dry weight, and also proline content were significant. Also, the effect of year was significant only for height and number of leaves. Effects of planting date and sampling in the adaptation of stabragh to saline and drought environments. Gorgan was the most suitable area for cultivation. Variations in the cultivation dates led to changes in the plants’ level of adaptation and stability.  The best planting date was April. The findings suggest that the plant can tolerate dry and saline conditions of the region and we can consider it as an alternative plant in arid and saline areas of the province.

کلیدواژه‌ها [English]

  • Adaptation
  • Calotropts procera
  • Drought stress
  • Golestan province
  • salinity stress
  • Stability
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