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Rapid and High Seed Germination and Large Soil Seed Bank of Senecio aquaticus in Managed Grassland
المؤلفون المشاركون
Lüscher, Andreas
Suter, Matthias
المصدر
العدد
المجلد 2012، العدد 2012 (31 ديسمبر/كانون الأول 2012)، ص ص. 1-8، 8ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2012-01-04
دولة النشر
مصر
عدد الصفحات
8
التخصصات الرئيسية
العلوم الطبيعية والحياتية (متداخلة التخصصات)
الطب البشري
تكنولوجيا المعلومات وعلم الحاسوب
الملخص EN
Senecio aquaticus, regionally a Red List species in Europe, has become increasingly abundant in agricultural grassland of medium to high management intensity in Switzerland, Southern Germany, and Austria in recent years, where it is a threat for animal and human health due to its toxicity.
In this study, we investigated the seed ecology of S.
aquaticus to help protection of the species in relic populations while improving its control when abundant in managed grassland.
Germination percentages of fresh ripe seeds of S.
aquaticus were on average 68% in 2008, but only 45% in 2010, indicating yearly variation.
Germination was generally fast: ten days after the onset of the tests, often more than 45% of all seeds had germinated.
When covered with a soil layer of 5 mm, germination was only 16% compared to 63% in full light.
Seeds buried in the soil for one and two years showed a germination of 78%, significantly higher than that of fresh ripe seeds, thus suggesting a stimulating effect of cold-wet stratification on germination and long seed survival in the soil.
In grasslands with established populations of S.
aquaticus, the number of germinable seeds of the species ranged from 361 to 1875 m-2 in topsoil (0–10 cm) with an average of 1139 m-2.
The large seed bank and the rapid and high germination of S.
aquaticus suggest that allowing seed formation is important for its preservation in relic populations.
With respect to agricultural grassland, strategies to control the species should initially target hindering seed production and dispersal.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Suter, Matthias& Lüscher, Andreas. 2012. Rapid and High Seed Germination and Large Soil Seed Bank of Senecio aquaticus in Managed Grassland. The Scientific World Journal،Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-493475
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Suter, Matthias& Lüscher, Andreas. Rapid and High Seed Germination and Large Soil Seed Bank of Senecio aquaticus in Managed Grassland. The Scientific World Journal No. 2012 (2012), pp.1-8.
https://search.emarefa.net/detail/BIM-493475
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Suter, Matthias& Lüscher, Andreas. Rapid and High Seed Germination and Large Soil Seed Bank of Senecio aquaticus in Managed Grassland. The Scientific World Journal. 2012. Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-493475
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-493475
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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