Screening of Eleven Festuca arundinaceaNative Populations for NaCl Tolerance in Order to Use in Green Space

محورهای موضوعی : مجله گیاهان زینتی

Azadeh Mousavi Bazaz ¹ (Department of Horticultural Science, Faculty of Agriculture, Ferdowsi University of Mashhad, I.R. Iran)
Ali Tehranifar ² (Agronomy Department, Faculty of Agriculture, Ferdowsi University of Mashhad, I.R. Iran)
Mohammad Kafi ³ (Agronomy Department, Faculty of Agriculture, Ferdowsi University of Mashhad, I.R. Iran)
Ali Gazanchian ⁴ (Resources Research Center of Khorassan. I.R. Iran)
Mahmood Shoor ⁵ (Department of Horticultural Science, Faculty of Agriculture, Ferdowsi University of Mashhad, I.R. Iran)

تاریخ دریافت : 1394/01/22 تاریخ پذیرش : 1394/09/20 تاریخ انتشار : 1394/06/10

کلید واژه: Growth Parameter, salt tolerance, Native Population, tall fescue,

چکیده مقاله :

In the turfgrass industry, the need for salinity tolerant turfgrasses is increasing because of the increased use of saline and non-potable water. Greenhouse container experiments were conducted to determine the relative salinity tolerance and growth responses of eleven native populations of tall fescue (Festuca arundinacea Schrub) (TF), including: Semirom, Mashhad, Sanandaj, Yasuj, Yazd Abad, Daran, Kamyaran, Gandoman, Borujen, Nasir Abad and Alborz to 8 weeks of salinity stress. Also, commercial TF was usedas control. Four salinity levels of irrigation water (0, 45, 90, 135 mM NaCl) were applied to turfgrasses. Results showed shoot and root dry weight, total leaf area, leaf length, leaf width and leaf firing percentage was significantly affected by salinity for all turfgrasses. The lowest leaf firing percentage at 90 and 135 mM, was related to Sanandaj population and commercial TF, and the highest leaf firing percentage was related to Alborz at 45 mM and Gandoman population at 90 and 135 mM. Shoot dry weight, total leaf area and leaf length of Sanandaj population was less affected by salinity compared to other populations. Based on data on growth parameters, the salinity tolerance ranking of selected populations was: Sanandaj >Daran >Yasuj>Kamyaran >Nasir Abad >Semirom >Mashhad >Alborz >Yazd Abad >Borujen >Gandoman . These results showed the potential and competetive role of TF native populations compared to commercial TF.

چکیده انگلیسی:

نیاز به تولید گرا سهای متحمل به دلیل استفاده فزاینده از آب شور و غیرقابل مصرف در حال افزایش است. آزمای شهای گلدانی به صورت گلخان های جهت تعیین تحمل نسبی و)Festuca arundinacea Schrub( پاس خهای رشدی به شوری 11 توده بومی فستوکا بلند شامل: سمیرم، مشهد، سنندج، یاسوج، یزد آباد، داران، کامیاران، گندمان، بروجن، نصیرآباد و البرز به مدت 8 هفته مورد ارزیابی قرار گرفتند. همچنین فستوکا تجاری به عنوان شاهد مورد در گراس های )NaCl 90 و 135 میلی مولار ،45 ، استفاده قرار گرفت. چهار سطح آب شور )  0کشت یافته در گلدان های پلاستیکی پر شده از ماسه خالص به عنوان بستر، مورد استفاده قرار گرفت و محلول هوگلند جهت تغذیه به کار رفت. نتایج نشان داد که صفات بیوماسقسمت هوایی، بیوماس ریشه، سطح برگ کل، طول برگ، عرض برگ و درصد خسارت برگ به طور معنی داری با افزایش شوری، افزایش یافت. کمترین درصد خسارت برگی در سطوح90 و 135 میلی مولار مربوط به توده سنندج و فستوکا تجاری بود، همچنین بیشترین درصد90 و 135 میلی مولار به ترتیب مربوط به تود ههای البرز، ، خسارت برگی در سطوح 45گندمان و گندمان بود. بیوماس قسمت هوایی، سطح برگ کل و طول برگ توده سنندج درمقایسه با سایر تود ههای بومی، کمتر تحت تاثیر شوری قرار گرفت. بر اساس داد ههای حاصلاز پارامترهای رشدی )بیوماس ریشه و قسمت هوایی، خسارت برگی، عرض برگ، طول برگ وسطح برگ(، رتبه بندی توده های بومی برای تحمل به شوری، عبارتند از: سنندج، داران، یاسوج،کامیاران، نصیرآباد، سمیرم، مشهد، البرز، یزدآباد، بروجن و گندمان. این نتایج بیانگر پتانسیل وتوان رقابتی توده های بومی با نوع تجاری آن می باشد.

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