تحمل دو ژنوتیپ گیاه دارویی همیشه بهار به تنش شوری در مرحله جوانه‌زنی و گیاه کامل
الموضوعات : بوم شناسی گیاهان زراعیآیلین حاجی‌پور فرد 1 , داود صادق زاده اهری 2
1 - گروه گیاهان دارویی، ادویه‌ای و معطر، واحد میانه، دانشگاه آزاد اسلامی، میانه، ایران
2 - عضو هیات علمی مؤسسه تحقیقات کشاورزی دیم کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، مراغه، ایران
الکلمات المفتاحية: تحمل به تنش, کلرید سدیم, آب شور, رقم پُرپَر, کالاندولا,
ملخص المقالة :
در این پژوهش اثر دو رقّت 4 و 8 گرم در لیتر کلرید سدیم بر دو ژنوتیپ کم‌پَر و پُرپَر گیاه دارویی همیشه بهار در مراحل جوانه‌زنی و گیاه کامل با استفاده از طرح بلوک‌های کامل تصادفی به‌صورت فاکتوریل بررسی شد. از نظر اغلب شاخص‌های جوانه‌زنی، صفات مورفولوژیک رویشی، زایشی و فیزیولوژیک بین ژنوتیپ‌ها اختلاف وجود داشت. با افزایش غلظت کلرید سدیم به 8 گرم در لیتر و در هر دو مرحله رشدی اغلب صفات کاهش یافتند. اثر متقابل ژنوتیپ در شوری فقط بر درصد جوانه‌زنی در مرحله گیاهچه‌ای و میزان کمبود رطوبت بافت برگی نسبت به حالت اشباع در مرحله گیاه کامل معنی‌دار بود. در مرحلۀ گیاهچه‌ای رقم کم‌پَر و در مرحله گیاه کامل رقم پُرپَر در برابر تنش شوری متحمل‌تر بود. کشت رقم پُرپَر همیشه‌بهار در مناطقی با مشکل شوری آب تا 4 گرم در لیتر کلرید سدیم امکان‌پذیر بوده و توصیه می‌شود.
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