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تاثیر سویه‌های Pseudomonas fluorescens مولد ACC دآمیناز و اندول استیک اسید بر خصوصیات جوانه زنی و رشد اولیه گیاهچه در ارقام جو تحت تنش شوری | ||
| علوم و فناوری بذر ایران | ||
| مقاله 8، دوره 8، شماره 2 - شماره پیاپی 16، بهمن 1398، صفحه 101-112 اصل مقاله (793.26 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22034/ijsst.2018.109437.1061 | ||
| نویسندگان | ||
| میترا آزادیخواه1؛ فاطمه جمالی* 2؛ حمیدرضا نوریزدان3؛ فرشته بیات4 | ||
| 1دانشجوی کارشناسی ارشد سابق-گروه اصلاح نباتات-دانشگاه خلیج فارس | ||
| 2عضو هیات علمی/گروه گیاهپزشکی-دانشگاه خلیج فارس-بوشهر | ||
| 3عضو هیات علمی/گروه اصلاح نباتات-دانشگاه خلیج فارس-بوشهر | ||
| 4هیات علمی-گروه اصلاح نباتات، دانشگاه خلیج فارس بوشهر | ||
| چکیده | ||
| به منظور بررسی تاثیر سویه‌های مختلف باکتری Pseudomonas fluorescens متحمل به شوری و با خصوصیات افزایش-دهندگی رشد گیاه بر خصوصیات جوانه‌زنی و رشد اولیه ارقام جو، مطالعه‌ای در دانشکده کشاورزی دانشگاه خلیج فارس بوشهر صورت گرفت. آزمایش به صورت فاکتوریل با سه فاکتور باکتری در چهار سطح ( سویه‌های B10، B2-10، B2-11 و B4-6 از باکتری P. fluorescens)، شوری در سه سطح (صفر، 3 و 6 دسی‌زیمنس بر متر) و رقم در پنج سطح (کارون، زهک، نیمروز، جنوب و صحرا) در قالب طرح کاملا تصادفی با سه تکرار در شرایط آزمایشگاهی اجرا شد. پس از یک هفته صفات درصد و سرعت جوانه‌زنی، بنیه بذر، طول و وزن خشک ریشه‌چه و ساقه‌چه و شاخص تحمل به شوری گیاهچه‌ها اندازه‌گیری شد.نتایج نشان داد که تاثیر باکتری، شوری و رقم و برهمکنش بین آنها بر تمامی صفات مورد ارزیابی معنی‌دار بود. پیش‌تیمار بذور با تمامی سویه‌های باکتری‌ها موجب افزایش صفات مرتبط با جوانه‌زنی و افزایش رشد گیاهچه تحت تنش شوری گردید (P≤0.05). نتایج این تحقیق حاکی از تاثیر باکتری‌های سودوموناس متحمل به شوری و مولد اندول استیک اسید و ACC دآمیناز بر افزایش فاکتورهای رشدی گیاهچه‌های جو تحت تنش شوری بود. | ||
| کلیدواژه‌ها | ||
| ریزوباکتریهای محرک رشد گیاه؛ جوانه‌زنی؛ شاخص بنیه؛ تحمل به شوری | ||
| عنوان مقاله [English] | ||
| Influence of Pseudomonas fluorescens strains producing ACC deaminase and indole acetic acid on germination traits and early seedling growth of barley cultivars under salinity stress | ||
| چکیده [English] | ||
| In order to investigate the effect of different strains of Pseudomonas fluorescens with plant growth-promoting and salinity tolerance charachteristics on germination attributed traits and early growth of barley, a study was performed in Persian Gulf University, Bushehr. A factorial experiment was conducted with three factors of bacteria in four levels (P. fluorescens strains B10, B2-10, B2-11 and B4-6), salinity levels (0, 3 and 6 ds/m) and cultivar in five levels (Karun, Zehak, Nimrooz, South of the Sahra) in a completely randomized design with three replications. After a week, germination percentage and speed, seed vigor, length and dry weight of coleoptyl and radical and salinity tolerance index were measured. Results revealed that the main effect of bacteria, salinity and cultivars and their interactions were significant on all measured traits. Seed pre-treatment with all bacteria strains increased seed germination attributed traits, salinity tolerance index and seedling early growth were under salinity stress (P≤0.05). The current study confirms the ameliorative effect of indole acetic acid and ACC deaminase producing Pseudomonas strains on growth factors of barley seedlings under salt stress. | ||
| کلیدواژه‌ها [English] | ||
| barley, plant growth-promoting rhizobacteria, seed vigor, germination, salinity tolerance | ||
| مراجع | ||
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