قارچ های همراه بذر سورگوم هیبرید در مزارع تولید لاین خراسان رضوی

نوع مقاله: مقاله پژوهشی

نویسندگان

موسسه تحقیقات ثبت و گواهی بذر و نهال، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران

چکیده

به منظور بررسی قارچ های همراه بذر لاین مادری (لاینAS9) سورگوم هیبرید رقم اسپیدفید در مزارع تولید بذر در استان خراسان رضوی، مطالعات بیماری شناسی بذر روی تعداد 30 نمونه متعلق به دو سال زراعی 1383-1381  انجام شد. جداسازی و مطالعه قارچ های بذرزاد (به جز عوامل  سیاهک ها) با روش های بلاتر معمولی، بلاتر انجمادی و پلیت آگار انجام و قارچ های  Fusariumverticillioides, Bipolarissorghicola, Cladosporium sp., Alternariaspp., Penicillium spp. و Cephalosporiumacremonium به ترتیب در 0/5، 4/5، 16، 19/25، 21 و 0/75 درصد بذور شناسایی شدند. در روش شستشوی بذر و مطالعه میکروسکوپی تلیوسپورهای عامل سیاهک های بذرزاد، تلیوسپورهای قارچ های Sphecelothecacruenta و Sporisoriumsorghi  به تعداد 12 و 42 تلیوسپور در کیلوگرم بذر ردیابی شدند.

کلیدواژه‌ها


 

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