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مقاله Health status evaluation of certified wheat seed of Semnan province against seedدرborne pathogen T. laevis in order to issue national wheatseed standard دارای 1 صفحه می باشد و دارای تنظیمات در microsoft word می باشد و آماده پرینت یا چاپ است

فایل ورد مقاله Health status evaluation of certified wheat seed of Semnan province against seedدرborne pathogen T. laevis in order to issue national wheatseed standard کاملا فرمت بندی و تنظیم شده در استاندارد دانشگاه و مراکز دولتی می باشد.

این پروژه توسط مرکز مرکز پروژه های دانشجویی آماده و تنظیم شده است

توجه : در صورت  مشاهده  بهم ریختگی احتمالی در متون زیر ،دلیل ان کپی کردن این مطالب از داخل فایل ورد می باشد و در فایل اصلی مقاله Health status evaluation of certified wheat seed of Semnan province against seedدرborne pathogen T. laevis in order to issue national wheatseed standard،به هیچ وجه بهم ریختگی وجود ندارد

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بخشی از متن مقاله Health status evaluation of certified wheat seed of Semnan province against seedدرborne pathogen T. laevis in order to issue national wheatseed standard :

سال انتشار: 1392
محل انتشار: همایش ملی پدافند غیر عامل در بخش کشاورزی
تعداد صفحات: 1
چکیده:

Seed is an important input in sustainable agriculture. Pests and diseases damage estimated for themost important eight crops grown in the world is about 300-400 billion USA each year and aconsiderable proportion of these losses are due to seedborne infections. Keeping in mind theimportance of seeds and their role in transmission and scattering of threatening seedbornepathogens, seed health test is unavoidable. For this purpose in the year 1392, 82 seed samples ofcommercial varieties Arg, Pishtaz, Alvand and Kavir from wheat certified category were collectedand based on International Seed Testing Association protocol, washing test by weighing 100 gramof seed, adding 100 CC distilled water and 1or 2 drops of T20, shook and centrifugation wascarried out. Then after, adding known amount of distilled water to sediment,10 L of suspensionfor observation and counting of spores if present was transferred under light microscope. Thenumber of spores per seed counted as 3.3. Result reveals that as compare to result obtained in year1389, (4.3number of spore /seed), there is 24.3% reduction in contamination by spores of T. laevis.Reduction of number of spore pre seed indicates selected management strategies were satisfactoryand continuity of selection of healthy fields, field inspection, seed treatment with chemical poisonsand etc is compulsory.

 

 

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