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شماره جاری

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راهنمای تهیه مقاله

فرم های نشریه

تأثیر تلقیح قارچ میکوریز (Rhizophagus irregularis) در سطوح مختلف کم آبیاری بر تولید ریزغده در سیب‌زمینی

نوع مقاله : علمی - پژوهشی

نویسندگان

1 استادیار پژوهشی، بخش تحقیقات اصلاح و تهیه نهال و بذر، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان همدان، سازمان تحقیقات، آموزش و ترویج کشاورزی، همدان، ایران

2 استادیار پژوهشی، بخش تحقیقات حفاظت خاک و آبخیزداری، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی کرمانشاه، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرمانشاه، ایران

3 کارشناس ارشد بیوتکنولوژی کشاورزی، بخش تحقیقات اصلاح و تهیه نهال و بذر، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان همدان، سازمان تحقیقات، آموزش و ترویج کشاورزی، همدان، ایران

چکیده

به‌منظور بررسی اثر قارچ میکوریز آربسکولار در شرایط کم آبیاری بر عملکرد کمی ریزغده‌های سیب‌زمینی، آزمایشی به‌صورت فاکتوریل در قالب طرح کاملاً تصادفی با چهار تکرار و در شرایط گلخانه به اجرا درآمد. تیمارها عبارت بودند از: سطوح آبیاری شامل 100 درصد ظرفیت مزرعه (شاهد)، 85 درصد، 75 درصد و 65 درصد ظرفیت مزرعه و دو سطح تلقیح ریزغده‌های رقم سانته با قارچ میکوریز گونه Rhizophagus irregularis و عدم تلقیح با قارچ مذکور. درصد کلونیزاسیون ریشه، تعداد ریزغده تولیدی در اندازه‌های کوچکتر از 3 گرم، 3 تا 5 گرم و بزرگتر از 5 گرم و هم‌چنین درصد ماده خشک ریزغده از صفات مورد اندازه‌گیری بودند. نتایج نشان داد که قارچ مذکورقابلیت بالایی در جهت ایجاد کلونیزاسیون با گیاهچه‌های سیب‌زمینی دارد (متوسط 08/68 درصد). در تیمار میکوریزی با 85 درصد تأمین آب در حد ظرفیت مزرعه تعداد ریزغده بیشتری در اندازه‌های مختلف تولید شد که ریزغده تولید شده در اندازه 3 تا 5 گرم تفاوت معنی‌داری با دیگر سطوح آبیاری داشت. از طرفی در تیمارهای میکوریزی در مقایسه با تیمارهای غیر میکوریزی تعداد ریزغده افزایش پیدا کرد. در مجموع در تولید تعداد ریزغده و درصد ماده خشک آن، تیمارهای میکوریزی با تأمین 65 و 75 درصد ظرفیت مزرعه، وضعیتی هم سطح و قابل رقابت با عدم کاربرد میکوریز در تیمارهای 100 و 85 درصد داشتند.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Effect of Arbuscular Mycorrhizal (AM) Fungus (Rhizophagus Irregularis) Inoculation in Different Levels of Water Deficit on Minituber Production in Potato

نویسندگان [English]

  • Kh. Parvizi 1
  • Y. Parvizi 2
  • A. Navaei 3

1 Assistant Professor, Seed and Plant Improvement Department, Hamedan Agricultural and Natural Resources Research and Education Center, AREEO, Hamedan, Iran

2 Assistant Professor, Soil Conservation and Watershed Management Department, Kermanshah Agricultural and Natural Resources Research and Education Center, AREEO, Kermanshah, Iran

3 Graduate M.Sc. of Agricultural Biotechnology, Seed and Plant Improvement Department, Hamedan Agricultural and Natural Resources Research and Education Center, AREEO, Hamedan, Iran

چکیده [English]

Abstract
Background and Objectives
The symbiotic relationship between arbuscular mycorrizae and plants can improve plant growth by increasing mineral nutrient absorption, tolerance to diseases and stresses such as drought, temperature fluctuation, metal toxicity, salinity and other adverse conditions. Micro propagation of potato by micro and mini tubers have been established for improving multiplication rate and possibility of reserving some more stock plants as germplasm. Multiplication of the minitubers already has been accompanied by lower establishment that causes low vigor and performance of the plant especially in water stress conditions. This experiment was done to study the effect of arbuscular mycorrhiza fungus inoculation on vigor and performance of planlets derived from minituber in green house conditions.
Material and Methods
This experiment was conducted as factorial based on a randomized complete design with four replications. The treatments were irrigation levels (100%, 85%, 75% and 65% of field capacity) and two levels of culture medium inoculation (inoculation with Rhizophagus irregularis and non- inoculation). The amount of water supplement was evaluated according to their treatment by weighing the boxes and calculating the amount of field capacity base. The method described by Gonigle et al (1990) was used for root colonization assessment. Mini-tuber obtained from any plant was weighed, arranged in three groups. Two-way analysis of variance (ANOVA) was carried out using SAS software (v. 8.02, SAS Institute, Cary, NC).
Results
Analysis of variance showed that in all minitubers the main effects of incubation with mycorrhiza, irrigation levels and their interaction were significantly different (p≤0.05). Minituber dry matter percentage showed a significant difference (p≤0.05) with mycorrhizal inoculation and interaction between mycorrhiza and irrigation levels. Means comparison showed that generally more minituber production in different sizes was accomplished by mycorrhizal treatments in all irrigation levels in comparison with non-inoculated ones. The most minitubers in different sizes were accomplished with inoculated and providing 85% FC water treatment. Inoculation of minitubers in 65% and 75% FC of irrigation levels did the same as the competitive situation with non-inoculated miniturbers in 85% and 100% of irrigation at the most traits related with quantity and quality of minituber production.
Discussions
It is concluded that although mycorrhiza was able to promote growth and final yield of minituber production and multiplication rate, this ability is not limited and can be extended ultimately by critical threshold of water accessibility. Dry matter of minituber was affected by application of mycorrhiza in four irrigation regimes. In relation with minituber dry matter, it is conceived that mycorrhiza can affect the dry matter of minituber but irrigation levels must be remarkable in this situation. Generally, it is concluded that mycorrhiza had considerable effect on performance of planted minitubers by adjustment of water stress through promoting mineral nutrients absorption and increasing osmotic potential capability. This ability could be different with intensity of water deficiency.

کلیدواژه‌ها [English]

  • Symbiotic fungus
  • Tuberization
  • Water deficit
  • Yield
مراجع
References
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تولیدات گیاهی
دوره 40، شماره 3
آذر 1396
صفحه 15-26
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هم رسانی
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