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بررسی پایداری قارچ تریکودرما در خاک‌های مختلف و تاثیر آن بر بهبود رشد گیاه خیار | ||
| کنترل بیولوژیک آفات و بیماری های گیاهی | ||
| مقاله 4، دوره 4، شماره 2، مهر 1394، صفحه 99-108 اصل مقاله (642.09 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/jbioc.2015.56407 | ||
| نویسندگان | ||
| آمنه مظلومی لیلی1؛ حمیدرضا علیزاده* 2؛ ناصر برومند3؛ ذبیح الله اعظمی ساردویی2 | ||
| 1دانشجوی کارشناسی ارشد رشتة بیماری‌شناسی گیاهی، گروه گیاه‌پزشکی دانشگاه جیرفت | ||
| 2استادیار گروه گیاه‌پزشکی دانشگاه جیرفت | ||
| 3استادیار گروه علوم خاک، دانشگاه جیرفت | ||
| چکیده | ||
| گونه‌های جنس تریکودرما از عوامل مهم بهبود‌دهندة رشد گیاهان هستند و شناسایی شرایط بهینة خاک برای بهبود فعالیت آن‌ها سودمند است. در این پژوهش تأثیر پنج سویه از گونه‌های مختلف جنس تریکودرما شامل: Trichoderma harzianum Tr6،T. harzianum T22،T. asperellum T34، T. atroviride P1وT. harzianum Tr9 در شرایط گلخانه روی گیاه خیار بررسی شدند و استرین برتر به‌منظور بررسی تأثیر آن بر بهبود رشد گیاه خیار و نیز ارزیابی پایداری آن در خاک‌های مختلف شامل: خاک نرمال، خاک دارای کمبود عنصر فسفر و پتاسیم، خاک قلیایی، خاک با دو سطح شوری و خاک اسیدی آزمایش شد. نتایج آزمایش‌ها نشان داد که تأثیر قارچ مزبور در خاک‌های دارای تنش‌های شوری و کمبود عناصر پتاسیم و فسفر بر صفات رشدی مورد بررسی در گیاه خیار به لحاظ آماری معنی‌دار بوده است. بیشترین و کمترین میانگین فراوانی جمعیت قارچ به‌ترتیب در خاک اسیدی و خاک خیلی شور به‌دست آمد. در نهایت، می‌توان نتیجه گرفت که یکی از دلایل پایین‌بودن جمعیت تریکودرما در برخی خاک‌ها مناسب‌نبودن شرایط خاک است و در صورت ترمیم جمعیت آن از طریق افزودن سویه‌های موفق قارچ به خاک، می‌تواند در خاک‌های تحت تنش، رشد گیاهان را بهبود بخشد. | ||
| کلیدواژه‌ها | ||
| بهبود رشد؛ پایداری؛ تریکودرما؛ خیار؛ شرایط خاک | ||
| عنوان مقاله [English] | ||
| Evaluation of Trichoderma stability in different soils and its effects on the growth performance of cucumber | ||
| نویسندگان [English] | ||
| Ameneh Mazlumi Lyli1؛ Hamidreza Alizadeh2؛ Naser Broumand3؛ Zabihallah Azami sardooei2 | ||
| 1M.Sc. Student and Assistant Professors, Department of Plant Protection, College of Agriculture, University of Jiroft, Iran | ||
| 2Assistant Professor, Department of Plant Protection, College of Agriculture, University of Jiroft, Iran | ||
| 3Assistant Professor, Department of Soil Science, College of Agriculture, University of Jiroft, Iran | ||
| چکیده [English] | ||
| Trichoderma spp. are known as efficient plant growth promoting agents. Hence, enrichment of soil by appropriate population of Trichoderma is useful and important for effective plant growth promote. Present study aimed to investigate the plant growth promoting effects of five strains of the genus Trichoderma species include: Trichoderma harzianum Tr6, T. harzianum T22, T. asperellum T34, T. atroviride P1 and T. harzianum on cucumber and select the most efficient candidate under greenhouse conditions. Then this superior strain was applied in various soils including normal, phosphorus-defective soil, potassium-defective soil, alkaline soil, soil with two levels of salinity and acidic soil to evaluate the detailed effects on cucumber growth parameters under greenhouse conditions. The results showed that Trichoderma strain Tr6 led to statistically significant improvement in examined growth indices in soils suffering from salinity and potassium- and phosphorus deficiency. In view of stability of Trichoderma population in different soils, comparison of means showed that the highest population was achieved in acidic and normal soil and the lowest population occurred in the soils with high level of salinity and alkaline soils. Generally, we concluded that low Trichoderma population under some soil conditions is likely due to the lack of optimum condition for its growth and it can improve plant growth under these stressed soils by restoring its population by adding successful strains of Trichoderma to the soils. | ||
| کلیدواژه‌ها [English] | ||
| Cucumber, growth improvement, soil conditions, Stability, Trichoderma | ||
| مراجع | ||
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