کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4528011 1625839 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Morphological and histo-anatomical traits reflect die-back in Phragmites australis (Cav.) Steud.
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم آبزیان
پیش نمایش صفحه اول مقاله
Morphological and histo-anatomical traits reflect die-back in Phragmites australis (Cav.) Steud.
چکیده انگلیسی

The decline of Phragmites australis (Cav.) Steud., a well-known phenomenon in Central and Western Europe, was detected recently also in the Mediterranean Basin. A range of parameters were quantified in healthy and affected stands as a screening for indicators of die-back. These were: stem dimension, density and pattern, starch storage, presence of occlusions in the vessel cells, abnormal lignification and calli in the root parenchyma. First, high stem density, occlusions, lignification and calli did not always coincide with die-back. Second, starch content appeared a reliable indicator. The higher starch amount detected in the healthy stands can be related to the greater ability to perform photosynthesis and accumulate reserves. Furthermore, the starch lack detected in the declining stands might result from the increased starch demand, due to the shoot regeneration connected to the clumped habit.


► Shoot length, diameter and density, rhizome and root anatomy were studied to detect reed die-back.
► The starch storage was studied in declining and healthy stands of reed.
► Reed decline causes reduced starch storage especially in the adventitious roots.
► The starch amount might be used as a reliable indicator of reed decline.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Aquatic Botany - Volume 103, October 2012, Pages 122–128
نویسندگان
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