ارزیابی واکنش ژنوتیپ های زمستانة کلزا به تنش خشکی آخر فصل در شرایط کاربرد سولفات آمونیوم

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری، گروه زراعت و اصلاح نباتات، دانشکده کشاورزی، دانشگاه شاهد، تهران، ایران

2 استادیار، گروه زراعت و اصلاح نباتات، دانشکده کشاورزی، دانشگاه شاهد، تهران، ایران

3 استاد موسسه تحقیقات اصلاح و تهیه نهال و بذر، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران.

4 استاد، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران

5 دانشیار گروه زراعت و اصلاح نباتات، دانشکده کشاورزی، دانشگاه شاهد، تهران، ایران

چکیده

به منظور بررسی اثر تنش خشکی آخر فصل بر صفات زراعی و کیفی ژنوتیپهای زمستانه کلزا در شرایط کاربرد سولفات آمونیوم، آزمایشی طی دو سال 95-1394 و 96-1395 به صورت فاکتوریل اسپلیت پلات در قالب طرح بلوک های کامل تصادفی با سه تکرار در مزرعه تحقیقاتی مؤسسه تحقیقات اصلاح و تهیه نهال و بذر کرج به اجرا درآمد. عامل تنش در دو سطح (آبیاری معمول و قطع آبیاری از مرحله غلاف دهی به بعد) و سولفات آمونیوم نیز در دو سطح (عدم کاربرد و کاربرد 150 کیلوگرم در هکتار در مرحله غنچه دهی کامل) به صورت فاکتوریل در کرت های اصلی و عامل ژنوتیپ های کلزا در پنج سطح، شامل چهار لاین BAL111، BAL119، BAL121، BAL128 و رقم نیما (به عنوان شاهد)، در کرت های فرعی قرار گرفتند. نتایج نشان داد که از میان ژنوتیپ های مورد بررسی، لاین BAL128 بیشترین عملکرد دانه (3904 کیلوگرم در هکتار) را داشته است که در مقایسه با تیمار شاهد 28 درصد افزایش دارد. بیشترین میزان روغن دانه (5/45 درصد) در سال دوم آزمایش و در شرایط آبیاری معمول حاصل شد. کاربرد سولفات آمونیوم نسبت به شرایط عدم کاربرد آن به میزان 5/2 درصد بر مقدار روغن دانه افزود. لاین BAL128 بیشترین درصد روغن دانه (2/44 درصد) را به خود اختصاص داد. در شرایط آبیاری معمولی، کاربرد سولفات آمونیوم باعث کاهش 8/22 درصدی میزان گلوکوزینولات شد، ولی همین میزان سولفات آمونیوم در شرایط قطع آبیاری باعث کاهش 2/17 درصدی میزان گلوکوزینولات شد.

کلیدواژه‌ها


عنوان مقاله [English]

Evaluation of winter canola genotypes response to terminal drought stress under application of ammonium sulfate

نویسندگان [English]

  • Salman Azimi Sooran 1
  • Hossein Amirshekari 2
  • Amir Hossein Shirani Rad 3
  • Javad Mozaffari 4
  • Mohammad Hossein fotokian 5
1 Ph.D. Student, Department of Agronomy and Plant Breeding, Faculty of Agriculture, Shahed University, Tehran, Iran
2 Assistant Professor, Department of Agronomy and Plant Breeding, Faculty of Agriculture, Shahed University, Tehran, Iran
3 Professor of Seed and Plant Improvement Institute(SPII), Agricultural Research, Education and Extension Organization(AREEO), Karaj, Iran.
4 Professor, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran.
5 Associate Professor, Department of Agronomy and Plant Breeding, Faculty of Agriculture, Shahed University, Tehran, Iran
چکیده [English]

In order to study the effect of terminal drought stress on agronomic and qualitative traits of canola genotypes in the application of ammonium sulfate condition, an experiment was performed during two years of 2015-2016 and 2016-2017. This study was conducted as a factorial split-plot design based on completely randomized block design with three replicates at the research farm of the Seed and Plant Improvement Institute (SPII). At the pod formation stage, irrigation factors were included two levels, normal and restricted, and at the elongation stage, ammonium sulfate was included two levels of 0 and 150 kg per hectare, as factorial was set in the main plots and cultivars including BAL111, BAL119, BAL121, BAL128, and Nima were set in subplots. The results showed that among the genotypes examined, line BAL128 had the highest grain yield (3904 kg/ha), which increased 28% compared with the control treatment. The highest amount of grain oil (45.53 percent) was obtained in the second year of experiment and under normal irrigation conditions. By application of ammonium sulfate, the amount of oil increased by 2.5 percent in comparison with normal condition. The BAL128 line had the highest percentage of grain oil (44.29%). in normal irrigation condition, the use of ammonium sulfate resulted in decreasing the amount of glucosinolate to 22.88%. However, in restricted irrigation condition, the amount of glucosinolate decreased to 17.25 percent. In the irrigation and fertilizer treatments of this experiment, among the lines studied, The BAL128 line is recommended for similar experimental conditions.

کلیدواژه‌ها [English]

  • Drought stress
  • Feeding rapeseed
  • Glucosinolate
  • rapeseed
  • Yield components

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