مقایسه آزمون‏های هدایت الکتریکی، آبنوشی و هیلتنر برای پیش ‏بینی سبزشدن گیاهچه عدس در مزرعه

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشیار گروه زراعت و اصلاح نباتات، پردیس کشاورزی و منابع طبیعی، دانشگاه رازی، کرمانشاه، ایران

2 دانشجوی کارشناسی ارشد زراعت، پردیس کشاورزی و منابع طبیعی، دانشگاه رازی، کرمانشاه، ایران

3 استادیار گروه زراعت و اصلاح نباتات، پردیس کشاورزی و منابع طبیعی، دانشگاه رازی، کرمانشاه، ایران

چکیده

آزمون‏های مختلفی برای تعیین قدرت بذر معرفی شده‏اند که در هر گونه گیاهی، یک یا برخی از آن­ها مناسب هستند. این پژوهش برای مقایسه آزمون‏های هدایت الکتریکی، آبنوشی و هیلتنر در تعیین قدرت بذر عدس اجرا گردید. این تحقیق در دو بخش آزمایشگاه و مزرعه در دانشگاه رازی و در سال زراعی 94-1393 انجام شد. در مزرعه، هشت توده بذر عدس که از نظر رقم و سن متفاوت بودند کشت شدند. در آزمایشگاه نیز این هشت نمونه بذر در آزمون‏های هدایت الکتریکی، آبنوشی و هیلتنر مورد مقایسه قرار گرفتند. نتایج آزمایش مزرعه‏ای نشان داد که نمونه‏های بذر از نظر صفت‏های درصد و سرعت سبزشدن، میانگین سبزشدن روزانه و متوسط زمان لازم برای سبزشدن دارای اختلاف معنی‏دار بودند. تحقیق آزمایشگاهی مشخص نمود که در آزمون‏های هدایت و هیلتنر، بین نمونه‏های بذر اختلاف معنی‏دار وجود داشت اما از نظر آزمون آبنوشی، اختلافی بین نمونه‏ها مشاهده نشد. در تجزیه گروهی در آزمون‏های هدایت و هیلتنر، نمونه‏های بذر جدیدتر از قدرت بالاتری برخوردار بودند. بر اساس تجزیه همبستگی، آزمون‏های هدایت و آبنوشی با درصد و سرعت سبزشدن گیاهچه در مزرعه همبستگی نداشتند اما صفت تعداد گیاهچه طبیعی در آزمون هیلتنر دارای همبستگی مثبت معنی‏دار با درصد سبزشدن (r=0.63) و سرعت سبزشدن (r=0.498) گیاهچه در مزرعه بود. بنابراین، به­نظر می‏رسد که برای پیش‏بینی سبزشدن گیاهچه در مزرعه، آزمون‏های هدایت و آبنوشی دارای قابلیت نامناسب و آزمون هیلتنر دارای قابلیت مناسب باشند.

کلیدواژه‌ها


عنوان مقاله [English]

The comparison of electrical conductivity, imbibition and hiltner tests to predict seedling emergence of lentil in the field

نویسندگان [English]

  • Mokhtar Ghobadi 1
  • Samin Lotfi 2
  • Saied Jalali Honarmand 3
  • Mohammad Eghbal Ghobadi 3
1 Associate Professor, Department of Agronomy and Plant Breeding, College of Agriculture and Natural Resources, University of Razi, Kermanshah, Iran
2 MSc of Agronomy, Department of Agronomy and Plant Breeding, College of Agriculture and Natural Resources, University of Razi, Kermanshah, Iran
3 Assistant Professor, Department of Agronomy and Plant Breeding, College of Agriculture and Natural Resources, University of Razi, Kermanshah, Iran
چکیده [English]

Several tests have been introduced to determine the seed vigor, that one or some of them are suitable for each plant species. This study was conducted to compare electrical conductivity, imbibition and hiltner tests to determine the seed vigor in lentil. The research was done in two sections of laboratory and field at Razi University during 2015-16. In the field, eight lentil seed lots, which were different in terms of cultivar and age, were planted. In the laboratory, this eight lentil seed lots were compared by electrical conductivity, imbibition and hiltner tests. The results of the field experiment showed that the lentil seed lots were significantly different in percentage and rate of seedling emergence, mean daily emergence and mean time to emergence. The laboratory experiment showed that there were significant differences among seed lots in conductivity and hiltner tests, but were not in imbibition test. Orthogonal analysis in the conductivity and hiltner tests demonstrated that the new seed lots had higher vigor. Based on the correlation analysis, the conductivity and imbibition tests had no correlation with the seedling emergence characteristics in the field, but the normal seedling percentage in hiltner test had significant positive correlation with the percentage (r=0.630) and rate (r=0.498) of seedling emergence in the field. So, it seems that to predict seedling emergence in the field, conductivity and imbibition tests have inappropriate ability, but hiltner test has appropriate ability.

کلیدواژه‌ها [English]

  • Emergence percentage
  • Emergence rate
  • Germination
  • Seed vigor
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