Pollen flow in the wildservice tree, Sorbus torminalis (L.) Crantz. I. Evaluating the paternity analysis procedure in continuous populations.
نویسندگان
چکیده
The joint development of polymorphic molecular markers and paternity analysis methods provides new approaches to investigate ongoing patterns of pollen flow in natural plant populations. However, paternity studies are hindered by false paternity assignment and the nondetection of true fathers. To gauge the risk of these two types of errors, we performed a simulation study to investigate the impact on paternity analysis of: (i) the assumed values for the size of the breeding male population (NBMP), and (ii) the rate of scoring error in genotype assessment. Our simulations were based on microsatellite data obtained from a natural population of the entomophilous wild service tree, Sorbus torminalis (L.) Crantz. We show that an accurate estimate of NBMP is required to minimize both types of errors, and we assess the reliability of a technique used to estimate NBMP based on parent-offspring genetic data. We then show that scoring errors in genotype assessment only slightly affect the assessment of paternity relationships, and conclude that it is generally better to neglect the scoring error rate in paternity analyses within a nonisolated population.
منابع مشابه
Diversity of arbuscular mycorrhizal fungal spores associated with Sorbus torminalis (L.) Crantz
This study aimed to investigate the diversity and types of arbuscular mycorrhizal fungi (AMF) associated with the wild service tree, Sorbus torminalis (L.) Crantz in spring and autumn followed by identifying similarities among the different study sites. Three different sites were selected including Kheiroud, Lalis, and Tarkin, in the Hyrcanian forests, north of Iran. Five rhizosphere soil sampl...
متن کاملImpacts of gene flow and logging history on the local genetic structure of a scattered tree species, Sorbus torminalis L. Crantz.
Sorbus torminalis L. Crantz is a colonizing tree species usually found at low density in managed European forests. Using six microsatellite markers, we investigated spatial and temporal patterns of genetic structure within a 472-ha population of 185 individuals to infer processes shaping the distribution of genetic diversity. Only eight young stems were found to be the result of vegetative repr...
متن کاملRegional population dynamics define the local genetic structure in Sorbus torminalis.
Recent changes in sylvicultural practices in Central Europe have created forests with closed canopies, and tree species preferring open and sunny forests have declined in area and abundance. This led to increased isolation of populations of many rare insect-pollinated, fleshy-fruited species with a naturally scattered distribution. To gain insight into the regional population dynamics of such s...
متن کاملبررسی و مقایسة فعالیت کمی و کیفی آنزیم پراکسیداز در اندامهای مختلف گونه بارانک (Sorbus torminalis (L.) Crantz)
رفتار گیاهان ارتباط ویژه‌ای با فعالیت آنزیم پراکسیداز دارد. این آنزیم به‌عنوان یک شاخص مناسب جهت بررسی چگونگی تاثیرات عوامل زیست‌محیطی بر روی فیزیولوژی گیاه مورد استفاده قرار می‌گیرد. این تحقیق با هدف بررسی نقش و فعالیت آنزیم پراکسیداز در اندامهای مختلف گونه بارانک ((L.) Crantz Sorbus torminalis) در منطقه جنگلی فریم استان مازندران انجام شد. تعداد 40 پایه درخت بارانک انتخاب گردیده و متعاقبا اقد...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Molecular ecology
دوره 12 12 شماره
صفحات -
تاریخ انتشار 2003