تأثیر محلول‌پاشی تریازول‌ها و سیلیکات کلسیم بر مقاومت به خشکی کلزا

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، گروه زراعت، دانشگاه آزاد واحد اسلامشهر

2 استادیار گروه زراعت، دانشگاه آزاد واحد اسلامشهر

3 استاد، گروه زراعت، دانشکدۀ کشاورزی، دانشگاه تربیت مدرس

4 دانشجوی دکتری، گروه زراعت، دانشکدۀ کشاورزی، دانشگاه تربیت مدرس

چکیده

آزمایشی به‌صورت فاکتوریل در قالب طرح بلوک‌های کامل تصادفی در سه تکرار برای بررسی و ارزیابی تأثیر تنش کم‌آبی و محلول‌پاشی مواد تنظیم­کنندۀ رشد بر عملکرد و اجزای عملکرد کلزا رقم هایولا 401 انجام شد. تیمارها شامل تنش کم‌آبی {(شاهد (تخلیۀ 50درصد آب قابل استفاده) (S1)، تنش متوسط (تخلیۀ 65درصد آب قابل استفاده) (S2) و تنش شدید (تخلیۀ 80درصد آب قابل استفاده) (S3)} و محلول‌پاشی{(بدون محلول‌پاشی (F1)، شاهد آب (F2)، سیلیکات کلسیم (F3)، هگزوکونازول (F4)، پروپیکونازول (F5) و پنکونازول (F6)} بودند. نتایج نشان داد، بیشترین عملکرد دانه مربوط به تیمار F6S1 در شرایطی بود که نسبت به F1S2 اختلاف 1/2 گرمی مشاهده شد. همچنین تیمارهای F6S1 و F1S3 با اختلاف بیش از 2 برابر بیشترین و کمترین وزن هزاردانه را نشان دادند. همچنین در شرایط S2 بدون محلول‌پاشی و محلول‌پاشی F4 با اختلاف 4/34 درصد کمترین و بیشترین میزان روغن را نشان دادند. تیمارهای F2S1 و F1S3 با اختلاف 154/0 مولی بیشترین و کمترین هدایت روزنه‌ای را نشان دادند همچنین مشخص شد بیشترین غلظت Co2 درون‌یاخته‌ای مربوط به تیمار F1S1 می‌باشد که نسبت به تیمار F2S3 229 میکرومول بیشتر بود. لذا کاربرد تریازول‌ها به‌ویژه پنکونازول و همچنین سیلیکات کلسیم آسیب‌های ناشی از تنش را در گیاه کلزا تا حدودی کاهش دادند.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Effect of triazoles foliar application and calcium silicate on canola (Brassica napus L.) dryness tolerance

نویسندگان [English]

  • Royan Monshi 1
  • Younes Sharghi 2
  • Hossein Zahedi 2
  • Seyed Ali Mohammad Modarres Sanavy 3
  • Mehrdad Moradi Ghahderijani 4
  • Hamed Keshavarz 4
1 M.Sc. Student, Agronomy, Eslamshahr Branch, Azad University, Iran
2 Assistant Professor, Agronomy, Eslamshahr Branch, Azad University, Iran
3 Professor, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
4 Ph.D. Candidate, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
چکیده [English]

Due to reduction the crops yield and yield components in water stress condition, a factorial experiment was conducted in a randomized complete block design with three replications to evaluate the effect of water deficite stress and growth improver materials on canola (Brassica napus L.) yield and yield components in research greenhouse of Agricultural Faculty of TarbiatModares University. Treatments includes water deficit stress {Control (50% discharged available water) (S1), average stress (65% discharged available water) (S2) and sever stress (80% discharged available water) (S3)} and foliar application {Control (F1), distilled water (F2), calcium silicate (F3), Hexaconazole (F4), propiconazole (F5), and penconazole (F6)}. Results showed the highest of yield was related to S1F6 that showed 2.1 gr higher than S2F1. Also S1F6 and S3F1 With more than 2-fold difference were the highest and the lowest of thousand seed weight. Also in S2, control and foliar application of F4 were the highest and the lowest of oil percentage respectively with 34.4% difference. S1 and S2 with no significant difference were lower than control with a significant difference proximately 5.8 µmol co2 m-2 Leaf s-1 in photosynthesis rate. S1F2 and S3F1 were the highest and lowest stomatal conductivity with 0.154 mol H2O m-2s-1 difference. Also S1F1 was the highest amount of intercellular Co2 concentration with 229 µmol CO2 mol air -1 difference with S3F2. So foliar application of triazoles (penconazole) and calcium silicate somewhat reduces the water deficit stress damages. So foliar application of triazoles (penconazole) and calcium silicate somewhat reduces the water deficit stress damages.

کلیدواژه‌ها [English]

  • oil percentage
  • water deficit stress
  • Yield and Yield components

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  • تاریخ دریافت: 05 آذر 1394
  • تاریخ بازنگری: 02 اسفند 1394
  • تاریخ پذیرش: 03 اسفند 1394
  • تاریخ انتشار: 01 شهریور 1396

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