بررسی سطوح نسبی مقاومت به شانکر باکتریایی در ژرم پلاسم ایرانی آلبالو

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه بیماری شناسی گیاهی، دانشگاه ازاد اسلامی، واحد تاکستان.

2 پژوهشکده میوه های معتدله و سردسیری، موسسه تحقیقات باغبانی، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج.

چکیده

چکیده
بیماری شانکر باکتریایی با عامل Pseudomons syringae pv. syringae یکی از بیماری ­های مهم درختان میوه هسته دار از جمله  آلبالو است. در این تحقیق، سطوح نسبی حساسیت برخی از ژنوتیپ­ های بومی آلبالو به این بیماری در شرایط باغی بررسی شد. ارزیابی­ ها در شرایط باغی بر روی 46 ژنوتیپ در مرحله درخت بالغ در دو سال متوالی (1397 و 1398) و 18 ژنوتیپ در مرحله نهال در سال 1399 انجام شد. مایه تلقیح از مخلوط سه جدایه ایرانی باکتری عامل تهیه شد. نهال­ های در پائیز 1398 مایه ­زنی شده و یک سال بعد طول شانکر اندازه­ گیری شد. درختان بالغ در پائیز 1396 مایه­ زنی شده و یک و دو سال بعد طول شانکر اندازه­ گیری شد. بر اساس نتایج، میانگین­ طول شانکر در هر دو مرحله بلوغ و نهال در ژنوتیپ­ های مختلف متفاوت بود. در نهال­ ها، بیشترین و کم­ترین طول شانکر به ­ترتیب متعلق به ژنوتیپ ­های 230 و 125بود. براساس نتایج تجزیه مرکب داده­ های دوساله درختان بالغ، بیشترین و کم­ترین طول شانکر به ­ترتیب مربوط به ژنوتیپ ­های 208 و 104 بود و بنابراین ژنوتیپ­ های فوق به­ عنوان حساس­ ترین و مقاوم ­ترین گروه­ بندی شدند. بین طول شانکر در نهال و درخت بالغ ارتباطی دیده نشد. بر اساس نتایج حاصله در درختان بالغ، کشت ژنوتیپ ­های حساسی مانند 108، 206 و 220 در مناطق مستعد این بیماری توصیه نمی ­شود.
 

کلیدواژه‌ها

عنوان مقاله [English]

Determination of bacterial canker resistance level in Iranian sour cherry germplasm

نویسندگان [English]

  • Shahab Ranjbari 1
  • Mansureh Keshavarzi 2
  • Naser Bouzai 2
  • Seyedeh Nikoo Kakovan 1
  • Zeynab salehi 2
1 Department of Plant Pathology, Islamic Azad University, Takestan Branch, Iran.
2 Temperate Fruit Center, Horticultural Research Institute, AREEO, Karaj, Iran.
چکیده [English]

Abstract
Bacterial canker disease caused by Pseudomons syringae pv. syringae, is one of the most damaging diseases in sour cherries. In this study, relative resistance of some local sour cherries to this disease was evaluated. Totally, 46 genotypes in adult stage in two repetitive years (2018 and 2019) and 18 genotypes in seedling stage at year 2020 were examined. A mixture of three local P. s. pv. syringae isolates was used as inoculum. Saplings trunks were inoculated in autumn 2019 and canker length was measured one year later. Adult trees were inoculated in autumn 2017 and canker length was recorded one and two years later. Based on result, mean canker length was different among genotypes in both stages. In saplings, the most and the least canker length were rated for genotypes 230 and 125, respectively. Compound analysis of adult trees data showed the least and the most canker lengths were related to genotypes 208 and 104, respectively which were thus rated as the most susceptible and the most resistant genotypes. Based on the results obtained from adult plants, planting of susceptible genotypes like 108, 206 and 220 in risk area is not recommended.
 
 

کلیدواژه‌ها [English]

  • Keywords: bacterial canker
  • resistance
  • Pseudomonas syringae
  • sour cherry

مراجع

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پژوهش های کاربردی در گیاهپزشکی
دوره 10، شماره 4
آذر 1400
صفحه 25-35

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سابقه مقاله

  • تاریخ دریافت: 13 شهریور 1400
  • تاریخ پذیرش: 13 شهریور 1400

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