بررسی امکان پیش ‏بینی وضعیت ظاهر شدن و استقرار گیاهچه جو دیم در مزرعه با آزمون جوانه‏ زنی استاندارد

نوع مقاله : مقاله پژوهشی

نویسندگان

1 کارشناسی ارشد

2 هیئت علمی ، دانشگاه رازی

3 دانشگاه رازی

4 عضو هیئت علمی دانشگاه رازی

چکیده

این تحقیق به منظور بررسی توانایی آزمون جوانه‏زنیاستاندارد برای پیش‏بینی وضعیت ظاهر شدن و استقرار گیاهچه بذر جو اجرا گردید. پژوهش حاضر در دانشگاه رازی در سال زراعی 93-1392 و در دو مرحله آزمایشگاه و مزرعه انجام شد. در آزمایشگاه، هشت توده بذر جو دیم در قالب طرح کاملاً تصادفی در آزمون جوانه‏زنی استاندارد مورد مقایسه قرار گرفتند و شاخص‌های مرتبط با بنیه بذر و گیاهچه اندازه‌گیری شدند. در مزرعه، این هشت توده بذر جو، در قالب طرح بلو‏ک‏‏های کامل تصادفی کشت شدند و صفات‏ درصد و سرعت ظاهر شدن گیاهچه مورد ارزیابی قرار گرفتند. نتایج آزمون آزمایشگاهی نشان داد که توده‌های بذر از نظر صفات‏ درصد جوانه‌زنی نهایی، درصد گیاهچه‌ عادی، سرعت جوانه‏زنی روزانه، طول ریشه‏چه، وزن خشک ریشه‏چه، وزن خشک ساقه‏چه و شاخص بنیه گیاهچه تفاوت معنی‏دار داشتند. تجزیه اورتوگونال داده‏ها در آزمایشگاه و مزرعه حاکی از آن بود که خصوصیات جوانه‏زنی و قدرت بذر توده‌های بذر جدید برتر از توده‌های بذر قدیمی بود. در تجزیه همبستگی بین صفات اندازه‏گیری شده در آزمایشگاه با صفات مزرعه‏ای مشخص گردید که درصد و سرعت ظاهر شدن گیاهچه در مزرعه بیشترین همبستگی را با درصد جوانه‏زنی نهایی، درصد گیاهچه عادی و سرعت جوانه‏زنی روزانه در آزمایشگاه داشتند. بنابراین، به نظر می‏رسد که می‏توان آزمون جوانه‏زنی استاندارد را با اعتماد بالایی برای پیش‏بینی وضعیت ظاهر شدن گیاهچه بذر رقم‏های جو دیم در مزرعه توصیه نمود.

کلیدواژه‌ها


عنوان مقاله [English]

Study on possibility of predict seedling farm emergence and establishment of dryland barley by standard germination test

نویسندگان [English]

  • Ronak Roshani 1
  • Mokhtar Ghobadi 2
  • mohammad-eghbal ghobadi 3
  • Mohsen Saeidi 4
2 University of Razi
3 Razi University
4 University of Razi
چکیده [English]

This research was done to evaluate the ability of standard germination test to predict emergence and establishment of barley seedlings in farm. The experiment was conducted under both laboratory and farm conditions at Razi University during 2013-14. In laboratory, eight seed lots of dryland barley were compared in a standard germination test based on completely randomized design and different indices related to seed and seedling vigor were measured. These seed lots were also planted under farm condition as a randomized complete block design and percentage and rate of seedling emergence were evaluated. The results of laboratory test showed that the seed lots were significantly different in final germination percentage, normal seedlings percentage, daily germination rate, root length, root dry weight, shoot dry weight and seedling vigor index. Orthogonal comparisons of data from the laboratory and the farm experiments showed that the new seed lots had higher germination and vigor characteristics than the old seed lots. In the correlation analysis between the measured traits in the farm with the laboratory conditions showed that the percentage and rate of seedling emergence in the farm test had higher correlations with final germination percentage, normal seedling percentage and daily germination rate in the laboratory test. So, it seems that we can recommend standard germination test with high trust to predict the seedling emergence and establishment of dryland barley in the farm.

کلیدواژه‌ها [English]

  • Germination
  • seedling emergence
  • seed test
  • seed vigor
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