اثر هورمون پرایمینگ بذر در مزرعه بر ویژگی های کمی و کیفی ارقام ذرت (Zea mays L.) زوال یافته

نوع مقاله : مقاله پژوهشی

نویسندگان

هیات علمی

چکیده

به منظور بررسی اثر هورمون پرایمینگ بذر در مزرعه آزمایشی به صورت فاکتوریل در قالب طرح ‌بلوک های کامل تصادفی در سه تکرار در مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه صنعتی شاهرود انجام شد. عوامل آزمایشی شامل هورمون پرایم در سه سطح (صفر، 150 میکرومول هورمون جیبرلین و 150 میکرومول هورمون سیتوکینین) پیری زودرس در سه سطح (صفر ،10 و 15 روز) و رقم در دو سطح (رقم 260 و رقم704) بودند. ابتدا بذرها به منظور ایجاد بنیه‌های متفاوت تحت آزمون پیری زودرس(دمای 40درجه سانتی گراد ورطوبت 90 درصد) قرار گرفتند و سپس توسط‌ غلظت های 150میکرومول هورمونهای سیتوکینین و جیبرلین دردمای 25 درجه سانتیگراد تیمار شده و در مزرعه کشت شدند. ویژگی های اندازه‌گیری شده در مزرعه شامل شاخص سطح برگ، شاخص کلروفیل، محتوای آب نسبی ،عملکرد دانه و بیولوژیک، تعداد ‌ردیف در بلال، تعداد دانه در ردیف، وزن هزار دانه و شاخص برداشت بود. نتایج مقایسه میانگین نشان داد که تیمار پیری زودرس سبب کاهش درویژگی های اندازه‌گیری شده و پرایمینگ بذر با هورمونهای سیتوکینین و جیبرلین اثر معنی داری برویژگیهای مورد مطالعه داشت، بطوریکه عملکرد دانه درتیمار با هورمون جیبرلین وسیتوکینین ‍‌ به ترتیب به (05/4968 کیلوگرم در هکتار)و (03/4082 کیلوگرم در هکتار )رسید که نسبت به سطح شاهد تفاوت معنی داری داشتند نتایج نشان داد که زوال بذرسبب کاهش در ویژگیهای مورد مطالعه شد وپرایمینگ بذرها قبل ازکشت در مزرعه توسط هورمونها بر خصوصیات کمی وکیفی رشد گیاه ذرت تاثیر گذار است.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

The effect of seed priming hormone on the farm on quantitive and qualitative characteristics deteriorated corn cultivars (Zea mays L.)

نویسندگان [English]

  • saedeh rashidy
  • Hamid Abbasdokht
  • ahmad gholamy
  • raza tavakol afshary
faculty member
چکیده [English]

In order to study of seed priming hormone in the field an experiment was conducted factorial based on completely randomized block design with three replications at the research farm of Faculty of Agriculture, Polytechnic University of Shahroud in 2016. Experimental factor were including hormone priming (control, Gibberellin hormone, Cytokinin hormone), Accelerated aging (0, 10, 15 day) and cultivar (260 and 704). First the seeds in order to create different vigors under accelerated aging test were placed(Temperature 40°C and humidity 90%) and then by150 micromol hormones cytokinin and gibberellin in 25 C treatment and in the farm were cultivated. Characteristics measured in farm including leaf area index, relative water content, chlorophyll index, biological yield, grain yield, rows per ear, grains per ear, 1000-grain weight and harvest index. Results comparison indicate accelerated aging reduces the measured characteristics and seed priming with cytokinin and gibberellins had a significant effect on the characteristics studied.So that the grain yield with treatment gibberellins and cytokinin hormones respectively was (4968.05 kg.ha) and (4082.03 kg.ha).The result showed that seed deterioration was reduced in studied characteristics and seed priming befor planting on the farm by hormones effective on quatitive and qualitative characteristics.

کلیدواژه‌ها [English]

  • Key words:
  • Priming
  • Corn،
  • Gibberellin hormoneو Cytokinin hormone
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