تحمل دو ژنوتیپ گیاه دارویی همیشه بهار به تنش شوری در مرحله جوانه‌زنی و گیاه کامل
محورهای موضوعی : 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
کلید واژه: تحمل به تنش, کلرید سدیم, آب شور, رقم پُرپَر, کالاندولا,
چکیده مقاله :
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.
In this study, the effect of two sodium chloride concentrations of 4 and 8 g/L on two marigold sparse petal and compact petal genotypes evaluated at germination and adult stages using factorial experiment based on randomized complete block design. There were differences between genotypes in some germination indices, vegetative and reproductive morphological and physiological traits. Some traits were reduced by increasing sodium chloride concentration to 8 g/L in both growing stages. Interactional effects of salt × genotype were significant on germination percentage and leaf water saturation deficient at seedling and adult stages, respectively. Sparse petal and compact petal genotypes were more tolerant to salinity in seedling and adult stages, respectively. Therefore, cultivation of compact petal marigold genotype in areas with water salinity problem up to 4 g/L NaCl is suitable and advisable.
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