افزایش شاخص های رشدی و گلدهی گل مریم پُرپَر تحت تاثیر غلظت‌های مختلف فسفر و اسید جیبرلیک در شرایط کشت هیدروپونیک

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانش آموخته کارشناسی ارشد، گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه شهید چمران اهواز، اهواز، ایران.

2 دانشیار، گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه شهید چمران اهواز، اهواز، ایران.

3 استادیار گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه شهید چمران اهواز، اهواز، ایران.

چکیده

به منظور بررسی اثر غلظت­های مختلف فسفر و اسید­جیبرلیک بر صفات کمی و کیفی گل مریم در شرایط کشت هیدروپونیک، آزمایشی به صورت فاکتوریل در قالب طرح بلوک­های کامل تصادفی و با 3 تکرار اجرا گردید. در این پژوهش اثر غلظت­های مختلف فسفر در محلول غذایی (75/7، 5/15، 31 و 62 میلی­گرم بر لیتر) و آغشته­سازی سوخ­ها با غلظت­های مختلف اسید­جیبرلیک (0، 100 و 200 میلی­گرم بر لیتر) بر ویژگی­های رشدی و فیزیولوژیک گل مریم مورد بررسی قرار گرفت. یافته­های این پژوهش نشان داد که بیشترین مقادیر وزن تر و خشک برگ و ساقه، تعداد سوخ و تعداد غنچه در غلظت ۳۱ میلی­گرم بر لیتر فسفر و تیمار ۲۰۰ میلی­گرم بر لیتر اسیدجیبرلیک و کمترین مقادیر آن­ها در تیمار صفر میلی­گرم بر لیتر اسید جیبرلیک و ۷۵/۷ میلی گرم بر لیتر فسفر (تیمار شاهد) مشاهده گردید. تیمار ترکیبی 31 میلی­گرم بر لیتر فسفر و 200 میلی­گرم بر لیتر اسیدجیبرلیک در قیاس با تیمار شاهد افزایش 06/26 درصدی طول شاخه گل، 99 درصدی تعداد شاخه گل و 47/58 درصدی عمر گلجای گل­های مریم پُرپَر را به نمایش گذاشت. با توجه به نتایج این پژوهش غلظت 31 میلی گرم بر لیتر فسفر و آغشته­سازی سوخ­ها با غلظت 200 میلی­گرم بر لیتر اسیدجیبرلیک به منظور تسریع در برداشت شاخه و افزایش طول شاخه، تعداد شاخه و عمر گلجای گل مریم در شرایط کشت هیدروپونیک قابل توصیه است.

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