نتایج جستجو برای: genetic erosion
تعداد نتایج: 644003 فیلتر نتایج به سال:
BACKGROUND Dental erosion (DE) in children is a significant oral health issue and has become a focus for research in clinical paediatric dentistry. AIM This study investigated DE in the primary dentition of 2- to 4-year-old twin and singleton children with regard to the genetic, medical and dietary factors associated with the condition. DESIGN The 128 subjects consisted of 88 twin children ...
Abstract We evaluated the stability of perennial legume and cereal grass species in artificial plant communities on permanent anti-erosion watercourses agroecosystems Belgorod region with active development linear soil erosion. In conditions steppe forest-steppe zones permanently grassed 2017-2019. varieties leguminous grasses: ‘Krasnoyaruzhskaya 1’ 2’ ( Medicago varia ), ‘Kazatsky’ Trifolium p...
Natural variation also referred to as genetic diversity or biodiversity is pervasive in all living organisms. It is important for their survival, providing the raw material for evolution, speciation and adaptation. From the viewpoint of agriculture, all crop plants have been domesticated from genetic diversity present in the wild. Breeders are well aware of the significance of natural variation...
The paradigm that soil microbial communities, being very diverse, have high functional redundancy levels, so that erosion of microbial diversity is less important for ecosystem functioning than erosion of plant or animal diversity, is often taken for granted. However, this has only been demonstrated for decomposition/respiration functions, performed by a large proportion of the total microbial ...
Over the last 150 years, Singapore's primary forest has been reduced to less than 0.2% of its previous area, resulting in extinctions of native flora and fauna. Remaining species may be threatened by genetic erosion and inbreeding. We surveyed >95% of the remaining primary forest in Singapore and used eight highly polymorphic microsatellite loci to assess genetic diversity indices of 179 adults...
بررسی تنوع ژنتیکی ژنوتیپهای بومی پیاز ایرانی در مقایسه با انواع خارجی چکیده: برنامه های اصلاحی گیاهان بر اساس تنوع و انتخاب صفات برتر کمی و کیفی صورت می گیرد. لذا، ارزیابی تنوع ژنتیکی، اولین مرحله در برنامه های اصلاحی است. در این راستا، استفاده از روش های جدید مطالعهی تنوع ژنتیکی ضروری به نظر می رسد. در این بررسی تعیین تنوع ژنتیکی سیزده ژنوتیپ پیاز ایرانی در مقایسه با دو ژنوتیپ خارجی با است...
Livestock conservation practice is changing rapidly in light of policy developments, climate change and diversifying market demands. The last decade has seen a step change in technology and analytical approaches available to define, manage and conserve Farm Animal Genomic Resources (FAnGR). However, these rapid changes pose challenges for FAnGR conservation in terms of technological continuity,...
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