بررسی تنوع رنگدانه‌ای، پرولین، قندهای محلول و محتوای یونی در سه جمعیت سیاه‌تاغ (Haloxylon ammodendron)

نویسندگان

دانشگاه یزد

10.22052/6.14.1

چکیده

در این تحقیق، تنوع رنگدانه‌ای، پرولین، قندهای محلول و محتوای یونی در سه جمعیت سیاه‌تاغ در استان یزد مورد بررسی قرار گرفت. به این منظور، نهال‌های یک‌ساله و هم‌اندازه از این جمعیت‌ها تهیه شد. نمونه‌برداری در قالب طرح کاملاً تصادفی در 5 تکرار انجام شد. نتایج نشان داد که مقدار کلروفیل a و کلروفیل کل در جمعیت سبزرنگ، به‌‌طور معنی‌داری بیشتر از دو جمعیت دیگر بود. بیشترین مقدار کلروفیل a به مقدار 3/27mg/gfw  در جمعیت سبزرنگ و کمترین آن به مقدار 0/1mg/gfw در جمعیت صورتی مشاهده شد. برخلاف کلروفیل، مقدار کاروتنوئیدها در جمعیت قرمزرنگ به‌طور معنی‌داری بیشتر از جمعیت سبزرنگ بود، به‌طوری‌که مقدار آن سه برابر جمعیت سبزرنگ اندازه‌گیری شد. مقدار آنتوسیانین‌ها، ترکیبات فنولی و فلاونوئید‌ها در جمعیت صورتی، به‌طور معنی‌داری بیشتر از دو جمعیت دیگر بود. بیشترین مقدار فلاونوئید به مقدار 3/34mg/gfw  در جمعیت صورتی‌رنگ و کمترین آن به مقدار 1/65mg/gfw  در جمعیت سبزرنگ مشاهده شد. مقدار قند‌های محلول در دو جمعیت صورتی‌رنگ و قرمزرنگ تاغ به‌طور معنی‌داری، بیشتر از جمعیت سبزرنگ بود. بیشترین مقدار نیتروژن و فسفر نیز در جمعیت صورتی‌رنگ مشاهده شد. بنابراین به‌نظر می‌رسد افزایش محتوای رنگدانه‌ای در جمعیت قرمزرنگ و صورتی‌رنگ تاغ، باعث افزایش توان آنتی‌اکسیدانی آن شود.

کلیدواژه‌ها


عنوان مقاله [English]

Diversity of the pigment, proline, soluble sugar and ion content of three populations of Haloxylon ammodendron

نویسندگان [English]

  • fatemeh falahifar
  • Asghar Mosleh Arany
  • afagh tabande
  • Hassan Dashti
چکیده [English]

This study investigated the variation in the pigment, proline, soluble sugar and ion content of three populations of Haloxylon ammodendron in Yazd province. This was carried out using one-year old plants of the same size from each population. Sampling occurred in a factorial experiment conducted using a randomized complete design with five replicates. The results showed that chlorophyll a and total chlorophyll in the green population were significantly greater than in the other populations. The highest and lowest amounts of chlorophyll a were 3.27 and 0.10 mgg-1fw for the green and pink populations, respectively. In contrast to chlorophyll a, the amount of carotenoid in the red population was significantly greater than in the green population at over three times the green value. The amounts of anthocyanin, phenoles and flavonoids in the pink population were significantly greater than in the other populations. The amount of soluble sugar in the pink and red populations were significantly greater than in the green one. It appears that the high amounts of the pigment in the red and pink populations increases their antioxidant abilities.

کلیدواژه‌ها [English]

  • Anthocyanin
  • Antioxidants
  • pigments
  • Haloxylon ammodendron
  • Phenotype
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