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اثر سالیسیلیک اسید بر برخی صفات فیزیولوژیکی، عملکرد و اجزای عملکرد گیاه رازیانه (Foeniculum vulgare Mill.) تحت تنش خشکی | ||
| تحقیقات گیاهان دارویی و معطر ایران | ||
| مقاله 4، دوره 32، شماره 2 - شماره پیاپی 76، خرداد 1395، صفحه 216-230 اصل مقاله (326.62 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijmapr.2016.106557 | ||
| نویسندگان | ||
| فاطمه سالارپور غربا1؛ حسن فرحبخش* 2 | ||
| 1دانشجوی کارشناسی ارشد، پژوهشکده باغبانی، دانشگاه شهید باهنر کرمان، ایران | ||
| 2دانشیار، پژوهشکده باغبانی، دانشگاه شهید باهنر کرمان، ایران | ||
| چکیده | ||
| به تازگی کاربرد سالیسیلیک اسید در افزایش مقاومت گیاهان به تنش خشکی افزایش یافته‌است. از این‌رو برای بررسی تأثیر سالیسیلیک اسید بر خصوصیات مورفوفیزیولوژیکی گیاه رازیانه (Foeniculum vulgare Mill.) در شرایط تنش خشکی، آزمایشی در مزرعه تحقیقاتی دانشگاه شهید باهنر کرمان، به‌صورت کرت‌های خردشده در قالب طرح مربع لاتین با سه تکرار در سال زراعی 1391 اجرا شد. تنش خشکی در سه سطح (50، 75 و 100 درصد ظرفیت زراعی) به‌عنوان فاکتور اصلی و غلظت سالیسیلیک اسید در سه سطح (صفر، نیم و یک میلی‌مولار) به‌عنوان فاکتور فرعی در نظر گرفته شدند. اسپری برگی سالیسیلیک اسید در مرحله سه تا چهار برگی و قبل از اعمال تنش خشکی در دو نوبت انجام شد. نتایج نشان داد که تنش خشکی باعث کاهش تعداد چتر بارور در بوته، تعداد چترک بارور در چتر، تعداد دانه در چترک، محتوای آب نسبی، کلروفیل، کاروتنوئید و عملکرد دانه و افزایش نشت الکترولیت‌ها نسبت به شاهد شد. کاربرد سالیسیلیک اسید سبب کاهش نشت الکترولیت‌ها و افزایش صفات تعداد چتر بارور در بوته، تعداد چترک بارور در بوته، محتوای آب نسبی، کلروفیل، کاروتنوئید و عملکرد دانه نسبت به شاهد شد. اثر متقابل تنش خشکی × سالیسیلیک اسید بر تعداد چتر بارور در بوته، تعداد چترک بارور در بوته، محتوای آب نسبی، کاروتنوئید و عملکرد دانه معنی‌دار بود. البته افزایش رنگیزه‌های فتوسنتزی، محتوای آب نسبی و کاهش نشت الکترولیت‌ها نشان‌دهنده کاهش خسارت اکسیداتیو و نقش سالیسیلیک اسید در افزایش تحمل رازیانه در برابر خشکی می‌باشد. | ||
| کلیدواژه‌ها | ||
| عملکرد دانه؛ کاروتنوئید؛ کلروفیل؛ محتوای نسبی آب؛ نشت الکترولیت | ||
| عنوان مقاله [English] | ||
| Effects of salicylic acid on some physiological traits, yield and yield components of fennel (Foeniculum vulgare Mill.) under drought stress | ||
| نویسندگان [English] | ||
| F. Salarpour1؛ H. Farahbakhsh2 | ||
| 1MSc. Student, Horticulture Research Institute, Shahid Bahonar University of Kerman, Kerman, Iran | ||
| 2Horticulture Research Institute, Shahid Bahonar University of Kerman, Kerman, Iran | ||
| چکیده [English] | ||
| Recently, the application of SA has increased to improve plants’ resistance to stresses such as drought. Hence to investigate SA effects on morphophysiological characteristics of Fennel (Foeniculum vulgare Mill.) under drought stress, a split plot experiment based on latin square design with three replications was carried out at the research farm of Shahid Bahonar University of Kerman in 2012. Three levels of drought stress (50, 75 and 100% of field capacity) and three concentrations of SA (0, 0.5 and 1mM) were considered as main and sub-plot treatments, respectively. Foliar application of SA was performed at 3-to 4-leaf growth stage and before application of drought stress. Results showed that the drought stress reduced the number of fertile umbel/plant, the number of fertile umbellate/umbel, the number of grains/umbellate, relative water content, chlorophyll, carotenoids and grain yield, while increased electrolyte leakage when compared with control. Salicylic acid reduced electrolyte leakage, while increased the number of fertile umbel/plant, the number of fertile umbellate/umbel, the number of grains/umbellate, RWC, chlorophyll, carotenoids and grain yield when compared to control (No SA application). Interaction of drought stress × SA on the number of fertile umbel/plant, the number of fertile umbellate/umbel, RWC, carotenoids and grain yield was significant. Increasing photosynthetic pigments, RWC and decreasing electrolyte leakage indicates a reduction in oxidative damage and implies SA role in tolerance of fennel to drought stress. | ||
| کلیدواژه‌ها [English] | ||
| Grain yield, carotenoids, chlorophyll, relative water content, electrolyte leakage | ||
| مراجع | ||
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