تأثیر رژیم‌های آبیاری برویژگی‌های جوانه زنی بذرلاین‌های امیدبخش کلزا

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجو

2 عضو هیئت علمی دانشگاه آزاد اسلامی واحد تاکستان

3 دانشگاه آزاد اسلامی، واحد تاکستان، گروه زراعت، تاکستان، ایران.

4 استاد پژوهش موسسه تحقیقات اصلاح و تهیه نهال و بذر

چکیده

به­منظور بررسی تأثیر اعمال رژیم­های مختلف آبیاری در برخی از لاین­های امیدبخش کلزا بر ویژگی­های جوانه­زنی بذر حاصل از لاین های امید بخش کلزا، پژوهش حاضر طی سال­های زراعی95-1394 به صورت کرت­های خرد شده در دو فاز (آزمایشگاه در قالب طرح کاملاً تصادفی و مزرعه در قالب طرح بلوک­های کامل تصادفی) اجرا و در نهایت تجزیه واریانس داده­ها، انجام شد. در هر دو بخش، آبیاری به عنوان عامل اصلی در سه سطح شامل آبیاری معمول، قطع آبیاری از مرحله گل­دهی به بعد و قطع آبیاری از مرحله خورجین­دهی به بعد و 18 لاین­ امید بخش کلزا به عنوان عامل فرعی در نظر گرفته شدند. نتایج داده­های حاصل از آزمایشگاه نشان داد، تنها اثر لاین و رژیم آبیاری بر صفات اندازه­گیری شده معنی­دار بود. با این حال، در شرایط مزرعه، بین رژیم­های آبیاری، لاین و اثر متقابل بین آن­ها اثر اختلاف معنی­داری از نظر کلیه صفات مشاهده شد. ضرایب همبستگی بین صفات نشان داد بین درصد جوانه ­زنی در آزمایشگاه و درصد سبز شدن نهایی و میانگین سبز شدن در مزرعه رابطه مثبت و معنی­داری وجود داشت. با این وجود، همبستگی بین هدایت الکتریکی و درصد جوانه زنی، جوانه زنی روزانه و وزن خشک گیاهچه منفی و معنی­دار بود. به طور کلی نتایج حاصل از این پژوهش نشان داد لاین KS7 از نظر کلیه صفات اندازه­گیری شده نسبت به سایر لاین­ها دارای نمود بهتری بود از اینرو استفاده از این لاین در آزمایشات آینده و ارزیابی عملکرد و سایر صفات مرتبط با آن تحت شرایط آبی مختلف توصیه می­شود.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of Irrigation Regimes on Seed Germination Characters of Promising Rapeseed Lines

نویسندگان [English]

  • mahboobeh naderi far 1
  • saeed seyfzadeh 2
  • Hamidreza Zakerin 3
  • seyed alireza valad abadi 2
  • Amir Hosein Shirani rad 4
1 student
2 takestan azad
چکیده [English]

In order to investigation effect of different irrigation regimes on seed germination characters in some of promising rapeseed lines, two separate split plot experimental based on CRD and RCBD design at laboratory and environmental condition, respectively, during 2015-16 cropping seasons were performed. At each experiment, different levels of irrigation––control, cut-off irrigation at the flowering stage, and cut-off irrigation at the pod formation stage––and 18 promising lines were considered as main and sub-plots, respectively. Results of analysis of variance obtained from laboratory showed that cultivar and irrigation regimes effects were significant on all of the measured characters. However, at environmental condition, only irrigation regimes, line, and their interaction effects were significant. Correlation coefficients among different characters indicated that, germination percentage under laboratory significantly correlated with final emergence percentage and final mean emerging, while correlation among electrical conductivity with some of characters such as germination percentage, daily germination and seedling dry weight was negative. Overall, our findings revealed that KS7 has desirable status than other lines. Hence, the use of this promising line for future experiments and assessing its grain yield and other related traits is recommended.

کلیدواژه‌ها [English]

  • Electrical conductivity
  • Germination percentage
  • Irrigation regime
  • Rapeseed
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