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تأثیر مبدأ بذر و تیمارهای مکانیکی و شیمیایی بر زندهمانی و جوانهزنی بذر گونه Robinia pseudoacacia L. | ||
علوم و تحقیقات بذر ایران | ||
مقاله 7، دوره 5، شماره 2، تیر 1397، صفحه 71-81 اصل مقاله (1.78 M) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22124/jms.2018.2912 | ||
نویسندگان | ||
کبری ارجمند1؛ علیرضا مشکی2؛ هومن زوانبخش2؛ مریم ملاشاهی* 3؛ محمدکیا کیانیان4 | ||
1کارشناس ارشد جنگلداری | ||
2استادیار دانشگاه سمنان | ||
3دانشگاه سمنان | ||
4مربی دانشگاه سمنان | ||
چکیده | ||
با توجه به قرارگیری بخش اعظم نواحی کشور در مناطق خشک و نیمهخشک، انتخاب گونه مناسب و سازگار برای جنگلکاری از اهمیت ویژهای برخوردار است. اقاقیا گونهای سریعالرشد بوده که گرما و سرمای شدید را تحمل کرده و در خاکهای خشک و ضعیف خوب رشد میکند اما این درخت دارای بذوری با پوسته سخت بوده و در نتیجه برای موفقیت در کاشت و جوانهزنی نیاز به اعمال تیمارهایی جهت حذف این پوسته دارد. هدف از انجام تحقیق حاضر تعیین بهترین مبدأ جمعآوری بذر و بهترین تیمار بذر اقاقیا از لحاظ جوانهزنی و زندهمانی جهت استفاده از آن در جنگلکاری ها میباشد. آزمایش با استفاده از بذور جمعآوری شده از 6 مبدأ شامل سبزوار، سمنان، گرگان، مازندران، تهران و کردستان در قالب طرح کاملأ تصادفی انجام شد. جهت تعیین میزان زندهمانی بذرها، در ابتدا آزمون تترازولیوم انجام شد. سپس تیمارهای خراشدهی با سمباده، اسید سولفوریک 96 درصد، آب جوش100 درجه سانتیگراد، آب اکسیژنه 1 درصد، آب مقطر و شاهد روی بذرها اعمال گردید. نتایج حاصل نشان داد که در بین تیمارها، تیمار خراشدهی با سمباده بالاترین میزان جوانهزنی را در اکثر مبدأها نشان داده است. هم چنین بین مبدأهای جمعآوری بذور نیز اختلاف معنیدار وجود داشت به گونهای که میتوان مبدأ گرگان را با جوانهزنی 03/73 درصد به عنوان مبدأ برتر و مبدأ تهران را با جوانه زنی 18/48 % به عنوان مبدأیی که ضعیفترین عملکرد و کمترین میزان جوانهزنی را به خود اختصاص داد، معرفی نمود. | ||
کلیدواژهها | ||
آب اکسیژنه؛ اقاقیا؛ تترازولیوم؛ مبدأ بذر | ||
مراجع | ||
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