کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4392776 1618231 2016 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Morphology and mechanical properties of junctions: Implications on the success of clonal spread of cacti
ترجمه فارسی عنوان
مورفولوژی و خواص مکانیکی اتصالات: پیامدهای موفقیت در گسترش کلونال ککتی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی
Opuntioid cacti reproduce asexually through separation and subsequent rooting of stems (cladodes in platyopuntias; joints in cylindropuntias). Consequently, the force that keeps them together must be overcome. This work assesses the morphometry and disjunction force of joints in Tephrocactus aoracanthus. Morphologically, during their maturation, joints change in shape from oval to spherical, resulting in the youngest being significantly shorter and lighter than the oldest ones. Both critical bending moment and section modulus of junctions resulted in weaker connections on younger joints with respect to older ones, determining that young joints can be separated with less force applied. According to that, their deflection angle is smaller compared to older joints. In relation to other species, the junction of T. aoracanthus is more fragile in both the youngest and oldest joints. This mechanism could favor the spread of T. aoracanthus and its colonization of sites unfavorable for the establishment of its seedlings.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Arid Environments - Volume 128, May 2016, Pages 8-11
نویسندگان
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