Patterns of plastid and nuclear variation among apomictic polyploids of Hieracium: evolutionary processes and taxonomic implications
نویسندگان
چکیده
منابع مشابه
Patterns of plastid and nuclear variation among apomictic polyploids of Hieracium: evolutionary processes and taxonomic implications.
BACKGROUND AND AIMS Apomictic species (with asexual seed production) make up for 20-50 % of all taxonomically recognized species in northern Europe, but the phylogenetic relationships of apomictic species and the mode of evolution and speciation remain largely unknown and their taxonomy is consequently disputed. METHODS In the present study, plastid psbD-trnT sequences (349 accessions) and 12...
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پس از بررسی هر کدام از فاکتورهای نوع صنعت, نوع ضمانت نامه, نرخ بهره , نرخ تورم, ریسک اعتباری کشورها, کارمزد, ریکاوری, gdp, پوشش و وثیقه بر ریسک اعتباری صندوق ضمانت صادرات ایران مشخص گردید که همه فاکتورها به استثنای ریسک اعتباری کشورها و کارمزد بقیه فاکتورها رابطه معناداری با ریسک اعتباری دارند در ضمن نرخ بهره , نرخ تورم, ریکاوری, و نوع صنعت و ریسک کشورها اثر عکس روی ریسک اعتباری داردو پوشش, وثی...
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ژورنال
عنوان ژورنال: Annals of Botany
سال: 2013
ISSN: 1095-8290,0305-7364
DOI: 10.1093/aob/mct019