تأثیر محیط‌های کشت مختلف بر ریشه‌زایی قلمه‌های ساقه در Dracaena marginata
محورهای موضوعی : مجله گیاهان زینتی
سیده آمنه سجادی
1
,
شهرام صداقت حور
2
,
بهزاد کاویانی
3
,
علیرضا شیرزاد
4
1 - گروه زراعت و اصلاح نباتات، واحد رشت، دانشگاه آزاد اسلامی، رشت، ایران
2 - گروه باغبانی، واحد رشت، دانشگاه آزاد اسلامی، رشت، ایران
3 - گروه باغبانی، واحد رشت، دانشگاه آزاد اسلامی، رشت، ایران
4 - گروه باغبانی، واحد رشت، دانشگاه آزاد اسلامی، رشت، ایران
کلید واژه: دراسنا, دراگون ماداگاسکار, محیط کشت, پارامترهای رشد رویشی, گیاهان زینتی.,
چکیده مقاله :
دراسنا یا دراگون ماداگاسکار (Dracaena marginata Ait) یکی از مهم‌ترین گیاهان زینتی برگی در ایران و جهان است. محیط‌های کشت مناسب، مهم‌ترین نهاده برای کشت این گیاه به‌شمار می‌روند که از تلفات کاسته و رشد بهینه را پشتیبانی می‌کنند. این پژوهش به‌منظور بررسی اثر محیط‌های کشت مختلف بر ریشه‌زایی قلمه‌های ساقه در D. marginata، در قالب طرح بلوک‌های کامل تصادفی با هشت تیمار و سه تکرار انجام شد. محیط‌های کشت مورد استفاده شامل آزوکمپوست، ضایعات چای، خاک‌برگ (برگ پوسیده)، پرلیت، ورمی‌کمپوست، مخلوط ضایعات چای و ورمی‌کمپوست (۱:۱)، مخلوط پرلیت و ضایعات چای (۱:۱) و مخلوط پرلیت و آزوکمپوست (۱:۱) بودند. صفات مورد اندازه‌گیری شامل ارتفاع ساقه، تفاوت ارتفاع ساقه، تعداد ریشه، تعداد برگ، وزن تر ریشه، وزن خشک ریشه، وزن تر اندام هوایی و وزن خشک اندام هوایی بود که پس از ۷۵ روز مورد ارزیابی قرار گرفتند. نتایج نشان داد که بیشترین تعداد ریشه (۱۹) و تعداد برگ (۳۰) در قلمه‌های ساقه به‌ترتیب در محیط کشت ورمی‌کمپوست و پرلیت به‌دست آمد. بر اساس یافته‌ها، پرلیت و ورمی‌کمپوست به‌عنوان محیط‌های کشت مناسب برای ریشه‌زایی و رشد قلمه‌های ساقه D. marginata توصیه می‌شوند.
Dracaena, or the Madagascar dragon tree (Dracaena marginata Ait), is one of the most important ornamental foliage plants in Iran and the world. Suitable growing media are the most critical input for cultivating this plant, supporting reduced losses and optimal growth. This study was conducted in a randomized complete block design with eight treatments and three replications to investigate the effect of different growing media on the rooting of stem cuttings in D. marginata. The growing media included azocompost, tea waste, leaf mold, perlite, vermicompost, tea waste mixed with vermicompost (1:1), perlite mixed with tea waste (1:1), and perlite mixed with azocompost (1:1). The measured parameters—stem height, stem height difference, root number, leaf number, root fresh weight, root dry weight, shoot fresh weight, and shoot dry weight—were evaluated after 75 days. The results showed that the highest root number (19.00) and leaf number (30.00) in stem cuttings were achieved in vermicompost and perlite media, respectively. Based on the findings, perlite and vermicompost are recommended as suitable media for rooting and growth of D. marginata stem cuttings.
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