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بررسی واکنش جوانهزنی ارقام گندم رایج استان گلستان به تنش خشکی با استفاده از مدل هیدروتایم | ||
| تنشهای محیطی در علوم زراعی | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 08 تیر 1405 اصل مقاله (1.11 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22077/escs.2026.9239.2361 | ||
| نویسندگان | ||
| رادمان کریمی1؛ سمعان رفیعی2؛ فرشید قادری فر* 3؛ محسن ملک2 | ||
| 1دانشجوی کارشناسی تولید و ژنتیک گیاهی، گروه زراعت، دانشکده تولید گیاهی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان | ||
| 2دانشآموخته کارشناسیارشد اگروتکنولوژی-علوم و تکنولوژی بذر، گروه زراعت، دانشکده تولید گیاهی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان | ||
| 3استاد تمام، گروه زراعت، دانشکده تولید گیاهی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان | ||
| چکیده | ||
| در این مطالعه به ارزیابی واکنش ارقام و لاینهای گندم تحت کشت رایج در استان گلستان به تنش خشکی در مرحله جوانهزنی با کمک مدل هیدروتایم پرداخته شد. هدف از انجام این مطالعه علاوه بر شناسایی واکنش ارقام مختلف به تنش خشکی در مرحله جوانهزنی ارائهی دید مناسبتری در برنامهریزیهای مرتبط با الگوی کشت به محققان و کشاورزان میباشد. این مطالعه در آزمایشگاه تحقیقات بذر دانشگاه علوم کشاورزی و منابع طبیعی گرگان در قالب طرح کاملاً تصادفی بهصورت آزمایش فاکتوریل انجام شد. فاکتورهای این آزمایش شامل ارقام رایج گندم در استان گلستان در یازده سطح (آفتاب، احسان، تیرگان، قابوس، کریم، کلاته، کوهدشت، گنبد، لاین۱۷، مروارید و معراج) و تنش خشکی در شش سطح (صفر ، 0.3-، 0.6-، 0.9-، 1.2- و 1.5- مگاپاسکال) بود. همچنین طول کلئوپتیل ارقام مختلف گندم اندازهگیری شد. نتایج تجزیه واریانس نشان داد اثر تنش خشکی، رقم و اثر متقابل تنش خشکی و رقم بر درصد جوانهزنی معنیدار بود. همچنین اختلاف میانگین طول کلئوپتیل و ضرایب مدل هیدروتایم شامل ضریب هیدروتایم (θH)، پتانسیل آبپایه (ψb50) و انحراف معیار (σψb) در ارقام مختلف گندم دارای اختلاف معنیدار بود. همچنین نتایج بیانگر وجود همبستگی منفی بین طول کلئوپتیل و پتانسیل آب بود که این میتوان نتیجهگیری کرد استفاده از این ضریب میتواند مکمل و یا حتی جایگزین پارامتر طول کلئوپتیل در انتخاب و اصلاح ارقام جهت کشت در مناطق دیم باشد. بهطورکلی نتایج این مطالعه بیانگر تفاوت ارقام گندم در پاسخ به تنشهای آبی در مرحله جوانهزنی بذرها بود. نتایج این مطالعه میتواند به طور مؤثری در مدیریت زراعی گندم در انتخاب ارقام باتوجه به نوع کشت و میزان آب در دسترس مفید واقع شود. همچنین درنظرگرفتن اهمیت این موضوع از جانب اصلاحگران ارقام بهمنظور توجه به واکنش جوانهزنی بذرها به تنشهای آبی حائز اهمیت است. | ||
| کلیدواژهها | ||
| پتانسیل آبپایه؛ تنش خشکی؛ طول کلئوپتیل؛ قدرت گیاهچه | ||
| مراجع | ||
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آمار تعداد مشاهده مقاله: 6 تعداد دریافت فایل اصل مقاله: 2 |
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