کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6541942 | 1421349 | 2018 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydraulic and mechanical dysfunction of Norway spruce sapwood due to extreme summer drought in Scandinavia
ترجمه فارسی عنوان
اختلال هیدرولیکی و مکانیکی درختان صنوبر نروژ به علت خشکسالی تابستان در اسکاندیناوی
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی
Although tracheids in annual rings with signs of collapse had higher tangential lumen diameters than those in “normal” annual rings, we conclude that collapse of tracheid walls depends mainly on wall thickness, which is genetically determined to a large extent. Spruce trees that produce earlywood with extremely thin cell walls can develop wall collapse and internal cracks under the impact of dry spells. We also present a new diagnostic tool for detecting individuals that are prone to cell wall collapse and stem cracks: Lucid bands, i.e. bands in the fresh sapwood with very thin cell walls and inhomogeneous lignin distribution in the S-layers and the compound middle lamellae that lost their hydraulic function due to periods of severe summer drought. The detection of genotypes with lucid bands could be useful for an early selection against individuals that are prone to stem cracks under the impact of severe summer drought, and also for early downgrading of logs prone to cracking during industrial kiln drying.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Forest Ecology and Management - Volume 409, 1 February 2018, Pages 527-540
Journal: Forest Ecology and Management - Volume 409, 1 February 2018, Pages 527-540
نویسندگان
Sabine Rosner, Notburga Gierlinger, Matthias Klepsch, Bo Karlsson, Rob Evans, Sven-Olof Lundqvist, Jan SvÄtlÃk, Isabella Børja, Lise Dalsgaard, Kjell Andreassen, Svein Solberg, Steven Jansen,