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تاثیر محلول‌پاشی با اسیدآسکوربیک، اسید سالیسیلیک و متانول بر ویژگی‌های فیزیولوژیک و کاهش خسارت تاخیر کاشت کلزا

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار، مرکز تحقیقات کشاورزی و آموزش کشاورزی و منابع طبیعی صفی‌آباد دزفول، سازمان تحقیقات آموزش و ترویج کشاورزی، دزفول، ایران.

2 استاد، مؤسسه تحقیقات اصلاح و تهیه نهال و بذر کرج، سازمان تحقیقات آموزش و ترویج کشاورزی، ایران.

چکیده

این آزمایش به‌صورت کرت‏های یک­بار خردشده در قالب طرح آماری بلوک­های کامل تصادفی در سه تکرار به‌مدت دو سال زراعی (1392-94) در مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی صفی‌آباد دزفول اجرا شد. در کرت­های اصلی سه تاریخ کاشت 15 آبان‌ماه، 5 آذرماه و 25 آذرماه و در کرت­های فرعی اسید آسکوربیک با غلظت 100، 200 و 300 میلی‌گرم در لیتر، سالیسیلیک اسید با غلظت 100، 200 و 300 میکرومولار، متانول با غلظت 10، 20 و 30 درصد حجمی و شاهد به‌صورت محلول‌پاشی با آب مقطر مقایسه شد. اثر تاریخ کاشت و محلول‌پاشی و هم‌چنین اثر متقابل آن‌ها بر میزان پرولین، قندهای محلول، تعداد خورجین در بوته و عملکرد دانه در سطح 1% معنی­دار بود. مقایسه میانگین­های اثر متقابل تاریخ کاشت ومحلول‌پاشی نشان داد که بیش‌ترین تعداد خورجین در بوته (96/68) در تاریخ کاشت اول و محلول‌پاشی اسید آسکوربیک (300 میلی‌گرم در لیتر) تشکیل شد. از نظر عملکرد دانه بین تاریخ کاشت­های مختلف تفاوت معنی­داری وجود داشت و عملکرد دانه در تاریخ کاشت­های دوم و سوم در مقایسه با تاریخ کاشت اول به‌ترتیب به میزان 14 و 30 درصد کاهش یافت. هرچند محلول‌پاشی با تیمارهای آزمایشی در تمامی تاریخ  کاشت­ها موجب افزایش معنی­دار عملکرد دانه شد، اما کاربرد اسید آسکوربیک با غلظت 300 میلی‌گرم در لیتر در تاریخ کاشت‌های اول و سوم و اسید سالیسیلیک با غلظت 200 میکرومول و متانول (10 درصد) در تاریخ کاشت دوم قابل توصیه است.

کلیدواژه‌ها

عنوان مقاله [English]

Effects of Foliar Application of Ascorbic Acid, Salicylic Acid and Methanol on Physiological Traits ‎and‏ ‏Reducing the Damage Caused by Delayed Sowing Date in Canola

نویسندگان [English]

  • Seyedahmad Kalantarahmadi 1
  • Jahanfar Daneshian 2

1 1. Assistant Professor, Safiabad Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Dezful, Iran.

2 Professor, Seed and Plant Improvement Institute, Agricultural Research, Education and Extension Organization (AREEO), Iran.

چکیده [English]

The present experiment has been carried out as a split plot based on randomized complete block design with three replications in Safiabad Agricultural and Natural Resources Research and Education Center of Dezful between 2012 and 2014. The main plots is consisted of 3 sowing dates (November 5, November 25, and December 15) with the sub plots including 10 levels of foliar application (100, 200, 300 mg.lit-1 ascorbic acid, 100, 200, 300 μmol ascorbic acid, 10, 20, 30 vol% methanol, and the foliar application of distilled water as control treatment). The effect of sowing date and foliar application as well as their interaction has had significant effect on proline, soluble sugars, number of siliques per plant, and seed yield (P≤0.01). Comparing means of sowing date × foliar application shows that the maximum number of siliques per plant (68.96) has been formed in the first sowing date with the foliar application of ascorbic acid (300 mg.lit-1). There has been a significant difference between different sowing dates: the seed yield has decreased in the second and third sowing date, compared to the first one by 145% and 30%, respectively. However, foliar application of experimental treatments has increased the seed yield in all sowing dates, but it is recommended to use ascorbic acid (300 mg.lit-1) in the first and third sowing dates as well as salicylic acid (200 µmol) and methanol (10%) in the second sowing date.

کلیدواژه‌ها [English]

  • Heat
  • Proline
  • Seed yield
  • Soluble sugars
  • Sowing date
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به زراعی کشاورزی
دوره 23، شماره 2
تیر 1400
صفحه 377-392
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هم رسانی
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