اثر بازدارندگی اسانس های آویشن و زنیان روی رشد قارچ Rhizoctonia solani عامل شانکر ساقه سیب زمینی درشرایط آزمایشگاه و گلخانه

نوع مقاله : مقاله پژوهشی

نویسندگان

1 بخش تحقیقات گیاهپزشکی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیع استان تهران، سازمان تحقیقات، آموزش و ترویج کشاورزی ورامین، ایران

2 -

3 دانشگاه آزاد اسلامی واحد ورامین –پیشوا، دانشکده کشاورزی، گروه بیماری‌شناسی گیاهی، ورامین، ایران

کلیدواژه‌ها


عنوان مقاله [English]

The inhibitory effect of Thymus vulgaris and Carum copticum essential oil on the growth of Rhizoctonia solani, the causal agent of potato stem canker in the laboratory and greenhouse conditions

نویسندگان [English]

  • Dariush Shahriari 1
  • nazanin alibeiktehrani 2
  • Mojdeh Maleki 3
1 Plant Protection Research Department, Tehran Agricultural and Natural Resources Research and Education, Varamin, Iran
2 -
3 Department of Plant Pathology, College of Agriculture,Varamin-Pishva Branch, Islamic Azad University, Varamin, Iran
چکیده [English]

Potato is one of the most important food and economic crops all over the world, but Rhizoctonia solani, the causal agent of stem canker causes high loss of the product quality and quantity every year. In this study, the effects of two essential oils of thyme and Carum, were investigated on the colony growth rate and inhibitory growth in concentrations of 100, 200, 300, 400 and 500 ppm on PDA medium. In vitro tests, essential oils of thyme and Carum by two concentrations of 0.5 and 0.75, the combination of thyme 0.25+ Carum 0.25 and Rovral-Ts fungicide at 1.5 at 1000 were evaluated in a completely randomized block design in four replications. the tubers substratum cultivated in soil contaminated by R. solani that planted in pots were inoculated by essential oils and fungicides. The disease severity data were recorded and scored six weeks after inoculation using Das scale. The results demonstrated that growth rate in Thyme at 500 ppm (21.63 mm /day) and Carum (17.7 mm/day) and thyme + Carum (67.85) essences were more than 50 percent growth inhibitory. The results of disease severity index in greenhouse revealed that Thyme and Carum essences and Rovral-Ts fungicide respectively by 28.1 , 35.92 and 17.17 percent were successful in disease control as well as the mean of fresh and dry weight of shoot area in Thyme treatment increased relatively..

کلیدواژه‌ها [English]

  • : Potato
  • Rhizoctonia solani
  • Thymus vulgaris
  • Carum copticum
  • Inhibitiory