نوع مقاله : مقاله پژوهشی
نویسندگان
1 استادیار دانشگاه گیلان، دانشکده کشاورزی، گروه زراعت و اصلاح نباتات
2 کارشناسی ارشد دانشگاه گیلان، دانشکده کشاورزی، گروه زراعت و اصلاح نباتات
چکیده
به منظور بررسی تأثیر سویه های مختلف باکتری سودوموناس فلورسنس بر جوانه زنی و رشد گیاهچه جو رقم فصیح و بهمن، آزمایشی در دانشکده کشاورزی دانشگاه گیلان به صورت فاکتوریل و در قالب طرح کاملاً تصادفی با 3 تکرار به اجرا درآمد. در این آزمایش بذرها با سویه های 36، 103، 93، 36+93، 93+103، 103+36 و 36+93+103 سودوموناس فلورسنس تلقیح شدند و تیمار بدون تلقیح با باکتری به عنوان شاهد در نظر گرفته شد. صفات مورد بررسی شامل وزن تر و خشک ساقه چه، وزن تر و خشک ریشه چه، طول ساقه چه و ریشه چه، سرعت و درصد جوانه زنی، شاخص بنیه و درصد آب گیاهچه بودند. نتایج به دست آمده نشان داد که اثر باکتری بر همه عوامل معنی دار بود، به طوری که تلفیق سه باکتری 103+ 63 + 93 سودوموناس فلورسنس بیشترین اثر را بر عوامل مورد بررسی نسبت به کاربرد آن ها به صورت تنهایی و دوتائی، نشان دادند. برهمکنش باکتری در رقم به غیر از وزن تر و خشک ریشه چه و طول ریشــه چه بر صفـات دیگر معنی دار بود. در بین ارقام مورد مطالعه نیز رقم فصیح تنها از نظر شاخص بنیه، سرعت جوانه زنی و وزن تر ساقه چه بر رقم بهمن برتری نشان داد و در سایر صفات، رقم بهمن بهتر بود.
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