en اثر تنش شوری بر جوانه زنی بذر، رشد اولیه گیاهک و ساختار تشریحی اندام‌های رویشی چغندرقند علوم گیاهی Plant Biology مقاله پژوهشی Original Article <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">چغندرقند</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">از</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">تیره</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">تاج خروسیان </span></span><span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">دارای</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">نیاکان</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">شورپسند</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">است.</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">در</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">این</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">تحقیق،</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">اثر</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">غلظت</span></span><span dir="LTR"><span style="font-family:Times New Roman,serif;"><span style="font-size:10.0pt;">‌</span></span></span><span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">های</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">مختلف</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">کلرید</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">سدیم</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">در</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">مرحله</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">جوانه</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">زنی</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">بذر</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">گیاه</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">چغندرقند</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">و</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">ساختار</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">تشریحی</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">گیاه</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">بررسی شد. </span></span><span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">نتایج</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">نشان</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">داد</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">که</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">تنش</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">شوری،</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">جوانه</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">زنی</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">بذر</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">و</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">رشد</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">اولیه</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">گیاهچه</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">چغندر</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">قند</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">را</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">کاهش</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">داد</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">و</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">باعث</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">ایجاد</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">تغییراتی</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">در</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">ساختارتشریحی</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">گیاه</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">مانند</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">افزایش</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">سنتز</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">کوتین</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">روی</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">سلول‌های</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">اپیدرمی</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">برگ</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">شد</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">و</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">همچنین</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">تغییراتی</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">در</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">ضخامت</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">سیستم</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">آوندی،</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">اپیدرم،</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">پارانشیم</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">برگ </span></span><span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">&shy;</span></span><span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">ها،</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">ریشه</span></span><span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">&shy;</span></span><span style="font-family:B Nazanin;"><span style="font-size:10.0pt;"> ها</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">و</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">دمبرگ</span></span> <span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">شد.</span></span><span style="font-family:B Nazanin;"><span style="font-size:10.0pt;"></span></span><br /> &nbsp;<br /> <strong><span style="font-family:B Nazanin;"><span style="font-size:10.0pt;">واژه </span></span></strong> <em>Beta vulgaris</em> belongs to the family Amaranthaceae and was found to have halophytic ancestors. The objective of this study was to investigate the effect of sodium chloride on seed germination, therefore the early stages of seedling growth of <em>Beta vulgaris </em>grown under different salinity levels (0, 100, 150 and 200 mM of NaCl) were studied. The experiment was laid out in a completely randomized design (CRD) with four replications. It was revealed that as concentration of NaCl increases, the rate and percentage of germination, length and fresh weight of radicle & plumule and seedling vigour index decrease. In conclusion, our results indicated that salt stress decreased <em>Beta vulgaris</em> seed germination and early seedling growth while induced changes in the anatomical characteristics such as increased level of cutin synthesis on epidermal leaves cells and altered the thickness of vascular system, epidermis and parenchyma in leaves, roots and petioles.<br /> &nbsp;<br /> <br /> &nbsp;<br /> &nbsp; اپیدرم, برگ, پارانشیم, ریشه‌چه, سرعت جوانه زنی salinity, seedling, radicle length, phloem, xylem 419 430 http://nbr.khu.ac.ir/browse.php?a_code=A-10-715-1&slc_lang=en&sid=1 Fatemeh Nejadhabibvash فاطمه نژادحبیب‌وش f.nejadhabibvash@urmia.ac.ir 10031947532846008610 10031947532846008610 Yes Department of Biology, Faculty of Science, Urmia University, Urmia, Iran گروه زیست شناسی، دانشکده علوم، دانشگاه ارومیه، ارومیه، ایران Mohammad Bagher Rezaee محمدباقر رضایی mb.rezaee@gmail.com 10031947532846008611 10031947532846008611 No Department of Medicinal Plants, Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization, Tehran, Iran گروه گیاهان دارویی، موسسه تحقیقات جنگل ها و مراتع، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران