بررسی اثر غنی سازی دی اکسیدکربن بر آناتومی برگ گیاهان جعفری، ابری و رعنا زیبا

نویسندگان

1 استادیار گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه فردوسی مشهد، خراسان رضوی

2 مربی، مرکز تحقیقات انار دانشگاه فردوسی مشهد، خراسان رضوی

3 دانشجوی کارشناسی ارشد باغبانی، دانشکده کشاورزی، دانشگاه فردوسی مشهد، خراسان رضوی

چکیده

به منظور مطالعه اثر غلظت های بالای دی اکسیدکربن روی سه نوع گیاه زینتی با تیپ های مورفولوژیکی متفاوت از تیره کاسنی شامل جعفری (برگ های مرکب)، ابری (برگ های متقابل) و رعنا زیبا (برگ های روزته)، آزمایشی در قالب فاکتوریل بر پایه طرح کاملاً تصادفی با سه تکرار در دانشگاه فردوسی مشهد در سال1387 انجام گرفت. در این آزمایش، شش صفت آناتومیکی (تراکم روزنه، تراکم سلول های اپیدرمی، طول روزنه, طول و عرض سلول های محافظ و شاخص روزنه) بر روی گیاهان موردنظر، ارزیابی گردید. نتایج نشان داد که تقریباً تمام صفات مورد مطالعه تحت تأثیر دی اکسیدکربن (350، 700، 1050 و 1400 پی پی ام)، نوع گیاه و اثرات متقابل آنها قرار گرفت. غلظت 700 میکرولیتر بر لیتر دی اکسیدکربن باعث افزایش تراکم روزنه، تراکم سلول های اپیدرمی، طول روزنه و طول سلول های محافظ در گیاهان مورد مطالعه گردید. این نتایج همچنین نشان داد که بیشترین میانگین تراکم روزنه، تراکم سلول های اپیدرمی و شاخص روزنه مربوط به گیاه جعفری با برگ های مرکب بود، اما بیشترین میانگین طول روزنه مربوط به گیاه ابری با برگ های متقابل و بیشترین میانگین طول و عرض سلول های محافظ در گیاه رعنا زیبا با برگ های روزته مشاهده گردید.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of Co2 enrichment on leaf anatomy in marigold, floss flower and blanket flower

نویسندگان [English]

  • Mahmoud Shoor 1
  • Yahya Selahvarzi 2
  • Sahar Bostani 3
چکیده [English]

To evaluate the effect of high Co2 concentration on three ornamental plants belong to Asteraceae family, all with different morphological characteristics, namely: Marigold (compound leaves), Floss flower (opposite leaves) and Blanket flower (rosette leaves), an experiment was conducted in 2007 at Ferdosi university - Iran. Four levels of Co2 (350 as control, 700, 1050 and 1400 µl/l), as well as three plant genotypes were used as factorial arrangement based on a complete randomized design with three replications. The results showed that all studied traits were affected by Co2, plant genotypes and their interactions. Increasing Co2 concentration to 700 µl/l led to higher stomata density, epidermal cell density, stomata length, and guard cell length in all three plant genotypes. The results also showed that marigold (compound leaves) had the maximum values for stomata density, epidermal cell density, as well as stomatal index. Maximum stomata length occurred in Floss flower (opposite leaves) and maximum length and width of guard cell were observed in Blanket flower (rosette leaves).

کلیدواژه‌ها [English]

  • Anatomical traits
  • Blanket flower
  • CO2
  • Floss flower
  • Marigold
  • Stomatal density

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