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تعداد نتایج: 1597344  

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1391

the ability of composing a coherent and extended piece of writing in second language is considered as a fundamental factor to convey information and ideas of learners through the academic issues. although learners may achieve a perfect academic writing skill through assigning the l2 tasks in content based instruction, but demonstration of their abilities may be related to their ability in l1 es...

Journal: :Conservation Genetics Resources 2023

Mimosa bimucronata (Candolle) O. Kuntze, native to the American tropics, is worst invasive tree species in China, where it distributed southern coastal areas of Guangdong and Fujian provinces. It characterized by rapid growth waterlogging resistance, was introduced China for slope bank protection. However, there still a lack effective molecular markers its invasion management. In this study, we...

The genus Tulipa L. (Liliaceae) comprises about 100 species and Iran is considered as one of the main origins of tulips. In this research, genetic diversity and population structure of 27 wild populations of tulips collected from Iran were studied by 15 highly polymorphic and reproducible expressed sequenced tag-simple sequence repeat (EST-SSR) markers and 8 nucleotide binding site (NBS)-enzyme...

Introduction: Nephrotic syndrome (NS) is a genetic disease belonging to a heterogeneous group of glomerular disorders, which mainly occurs within the children. Linkage analysis using single nucleotide polymorphisms (SNP) is used as an indirect method in molecular diagnosis of the disease. A large number of SNP markers have been introduced in NPHS2gene in the available electronic databases. M...

Journal: :crop breeding journal 2013
a. namayandeh z. nemati m. m. kamelmanesh m. mokhtari m. mardi

fifteen microsatellite markers were employed to evaluate genetic relationships among different iranian species of crocus spp. (c. sativus, c. haussknechtii, c. cancellatus, c. speciosus, and c. caspius) from ten geographical regions (ghaen, gonabad, estahban, ferdows, veresk, reno, ali abad, kali abad, neka, and eslam abad). of these, 12 primers revealed polymorphism among crocus spp. average p...

Journal: :علوم گیاهان زراعی ایران 0
مهسا محمدجانی اسرمی کارشناس ارشد، دانشگاه علوم کشاورزی و منابع طبیعی ساری حمید نجفی زرینی استادیار، دانشگاه علوم کشاورزی و منابع طبیعی ساری سید حمیدرضا هاشمی دانشجوی دکتری پژوهشکدۀ ژنتیک و زیست فناوری کشاورزی طبرستان، دانشگاه علوم کشاورزی و منابع طبیعی

breeding for resistance is one of the main approaches to control diseases. in this approach, there is a necessary for existence a sufficient genetic variability of resistance genes. accordingly, assessing the genetic variability in the available germplasm is needed to manage genetic resources. molecular markers are effective tools to investigate genetic diversity for resistance to pathogens. nb...

Journal: :Sustainability 2021

The food needs for increasing population, climatic changes, urbanization and industrialization, along with the destruction of forests, are main challenges modern life. Therefore, it is very important to evaluate plant genetic resources in order cope these problems. this study, a set ninety-one walnut (Juglans regia L.) accessions from Central Anatolia region, composed seventy-four eight commerc...

Journal: :Agronomy 2021

Soybean productivity in sub-Saharan Africa (SSA) is less than half of the global average yield. To plug gap, further improvement grain yield must be attained by enhancing genetic potential new cultivars that depends on diversity parents. Hence, our aim was to assess and population structure elite soybean genotypes, mainly released advanced selections SSA. In this study, a set 165 lines genotype...

Journal: :Indian Journal of Genetics and Plant Breeding 2021

Whole genome sequence in mango offers unprecedented opportunities for genomics assisted crop improvement via enabling access to genome-wide genetic markers. In the present study, simple repeats (SSRs) were predicted from of mango. Based on SSR length (? 50 bp), highly-variable SSRs (MSSRs) sorted. A sub-set 129 MSSRs was validated a set 24 diverse genotypes yielding marker validation and polymo...

Journal: :Plant science today 2022

Mutagenesis is a well-known technique for introducing new variants into crop plants. In the present study, M2 populations were generated in cowpea (Vigna unguiculata (L.) Walp.) variety CO7 using gamma irradiation. The progeny used to investigate effectiveness of irradiation doses and examined agronomic traits. genomic variation mutants their parents was analysed five SCoT markers. Marker analy...

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