نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، گروه علوم باغبانی، دانشکده کشاورزی و منابع طبیعی، دانشگاه هرمزگان

2 دانشیار گروه علوم باغبانی، دانشکده کشاورزی و منابع طبیعی، دانشگاه هرمزگان

3 محقق بخش تحقیقات زراعی و باغی مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی هرمزگان، سازمان تحقیقات، آموزش و ترویج کشاورزی، ایران

چکیده

این پژوهش با هدف بررسی تأثیر غلظت‌های رقیق‌شده آب دریا بر صفات جوانه‌زنی و برخی شاخص‌های ریخت‌شناسی سه رقم کینوا شامل ردکارینا، Q26 و Q29 در قالب یک طرح کاملاً تصادفی به‌صورت فاکتوریل و با 6 تکرار در پتری‌دیش و گلدان انجام شد. سطوح مختلف شوری مورد بررسی در این پژوهش شامل 1.5 (شاهد)، 3، 6، 9، 12و 15 دسی‌زیمنس بر متر بود. نتایج نشان داد با افزایش شوری از 9 به 12 و 15 دسی‌زیمنس، کاهش غیرمعنی‌داری نسبت به شاهد در سرعت جوانه‌زنی مشاهده شد. با افزایش شوری تا 15 دسی‌زیمنس صفات ارتفاع بوته، تعداد شاخه جانبی، تعداد برگ، طول برگ و سطح برگ کاهش یافت و بیشترین عملکرد دانه مربوط به رقم Q26 بود. رقم Q26 در مقایسه با دو رقم دیگر حساسیت کمتری در شرایط شوری در صفات مختلف مانند اندازه و تعداد برگ، تعداد شاخه جانبی، ارتفاع قبل و بعد از گلدهی گیاه نشان داد. در مجموع می‌توان گفت، شوری اثر نامطلوبی بر سرعت جوانه‌زنی بذر کینوا نداشته و در مواردی جوانه‌زنی را تسریع نموده است. اما در سطح شوری بالا برخی صفات رویشی مانند خصوصیات برگ و شاخه و طول گل‌آذین را تحت تأثیر قرار داد. به‌نظر می‌رسد بتوان با اعمال مدیریت مناسب در مزرعه، استقرار و رشد این گیاه را در سطوحی از شوری تضمین نمود.

کلیدواژه‌ها

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