برﺭﺳﻲ ﺍﺛﺮ ﺗﻴﻤﺎﺭﻫﺎﻱ ﻣﺨﺘﻠﻒ ﺩﺭ ﺷﻜﺴﺘﻦ ﺧﻮﺍﺏ ﻭ ﺗﺤﺮﻳﻚ ﺟﻮﺍﻧﻪﺯﻧﻲ ﺑﺬﺭ Astragalus podolobus

نویسندگان

1 دانشگاه گنبدکاووس

2 ادارۀ کل منابع طبیعی استان گلستان

چکیده
گونۀ Astragalus podolobus یکی از گونههای بومی مراتع قشلاقی است که در مناطق خشک و نیمه­ خشک شمال گنبدکاووس می­روید. جهت بررسی روش‌های مؤثر شکستن خواب بذر Astragalus podolobusآزمایشی در قالب طرح کاملاً تصـادفی بـا 15 تیمار و 3 تکرار انجام شد. تیمارها شامل شاهد، اسیدسولفوریک 98 درصد، سرمادهی خشک 10 و 15 روزه، سرمادهی مرطوب 10 و 15 روزه و آب جوش 1، 3، 5، 10 و 15 دقیقه بودند. تجزیۀ واریانس داده‌ها نشان داد که درصد و سرعت جوانه‌زنی معنی‌دار است، اما زمان متوسط جوانه‌زنی در تیمارهای مختلف معنی‌دار نبود. نتایج مقایسۀ میانگین‌ها نشان می‌دهد که درصد جوانه‌زنی و سرعت جوانه‌زنی تیمارهای آب جوش بهتر از بقیه تیمارها است و اختلاف معنی­ داری با تیمارهای دیگر نشان می‌دهد. همچنین، نتایج این آزمایش نشان می‌دهد که با کاهش زمان قرارگیری بذرهای در آب جوش، درصد و سرعت جوانه‌زنی افزایش می‌یابد، به­ طوری­که بیشترین میزان درصد و سرعت جوانه‌زنی در تیمار آب‌جوش یک ­دقیقه مشاهده شد. تیمار آب جوش یک دقیقه می‌تواند درصد جوانه‌زنی را به 47 درصد و سرعت جوانه‌زنی را از 43/0 به 09/3 بذر در روز افزایش دهد.

کلیدواژه‌ها


عنوان مقاله English

The effect of different treatments on seed dormancy and germination of Astragalus podolobus

نویسندگان English

Khalil Agh1 1
Majid Mohammad Esmaili 1
Hossein Hosseinimoghaddam 1
Hamid Mostafalou 2
1 University of Gonbad-e Kavous
2 Department of Natural Resources in Golestan Province
چکیده English

The species Astragalus podolobus is one of the endemic species of winter pastures that grows in arid and semi-arid areas in the north of Gonbad-e Kavous. To investigate effective methods of breaking seed dormancy of Astr-agalus podolobus, an experiment was carried out in the framework of a completely randomized design with 15 treatm-ents and 3 replications. Treatments included controls, 98% sulfuric acid, dry chilling for 10 and 15 days, wet chilling for 10 and 15 days, and boiling water 1, 3, 5, 10 and 15 minute, respectively. Analysis of variance showed that the perc-entage and speed of germination were significant in different groups while the average time of germination in different treatments was not significant. The results of comparing mean values showed that the percentage and the speed of germination in boiling water treatments were best in comparison with other treatments with significant differences. The results of this experiment also showed that reducing the exposure time of seeds to boiling water increases the germination percentage and speed, consequently, the highest percentage and speed of germination was observed in boil-ing water 1 minute. Boiling water 1 minute treatment can increase the germination percentage up to 47% and the seed germination speed from 0.43 to 3.09 seeds per day

کلیدواژه‌ها English

boiling water
endemic
germination percentage
speed of germination
arid
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دوره 4، شماره 2 - شماره پیاپی 12
تابستان 1396
صفحه 147-154

  • تاریخ دریافت 18 خرداد 1405
  • تاریخ انتشار 18 خرداد 1405