نتایج جستجو برای: germplasm preservation
تعداد نتایج: 80365 فیلتر نتایج به سال:
E. sibiricus L., the type species of the genus Elymus, is a perennial, self-pollinating and allotetraploid grass indigenous to Northern Asia, which in some countries can be cultivated as an important forage grass. In the present study, eighty-six Elymus sibiricus accessions, mostly from different parts of Asia, were assayed by gliadin markers based on Acid Polyacrylamide Gel Electrophoresis to ...
Orchids are affected by many viruses resulting in poor growth, yield and quality, and an overall decline in population. Cymbidium mosaic virus (CymMV) is one of the common orchid viruses found in Cymbidium species but it infects different orchid genera. In this study Cymbidium aloifolium was propagated in vitro using MS medium at different strength (1.0, ½, and ¼) with or without 0.5 mg/l BAP (...
Genetic diversity of 50 Tunisian almond (Prunus dulcis Mill.) genotypes and their relationships to European and American cultivars were studied. In total 82 genotypes were analyzed using ten genomic SSRs. A total of 159 alleles were scored and their sizes ranged from 116 to 227 bp. The number of alleles per locus varied from 12 to 23 with an average of 15.9 alleles per locus. Mean expected and ...
BACKGROUND AND AIMS Bananas and plantains (Musa spp.) are one of the major fruit crops worldwide with acknowledged importance as a staple food for millions of people. The rich genetic diversity of this crop is, however, endangered by diseases, adverse environmental conditions and changed farming practices, and the need for its characterization and preservation is urgent. With the aim of providi...
Japanese plum (Prunus salicina Lindl.) is widely distributed in temperate zones across the world. Since its introduction to USA late 19th century, this species has been hybridized with up 15 different diploid Prunus species. This high level of introgression resulted a wide range traits and agronomic behaviors among currently grown cultivars. In work, 161 plum-type accessions were genotyped usin...
تعداد محدودی مارکرهای ریزماهوارک مناسب برای بررسی تنوع وراثتی گونه ی h. bulbosumوجود دارد. در این مطالعه قابلیت انتقال ریزماهوارک های جو زراعی به گونه ی h. bulbosumو تنوع پذیری آنها مورد بررسی قرار گرفته است. از 93 زوج پرایمر ssr آزمایش شده همگی در گونه ی h. vulgare(11 نمونه بذر) قطعاتی از dna را تکثیر نمودند ولی تنها 46 زوج از آنها (61/51%) قابلیت انتقال به گونه h. bulbosum (5 نمونه بذر) با سط...
An extensive survey of the standing genetic variation in natural populations is among the priority steps in developing a species into a model system. In recent years, green foxtail (Setaria viridis), along with its domesticated form foxtail millet (S. italica), has rapidly become a promising new model system for C4 grasses and bioenergy crops, due to its rapid life cycle, large amount of seed p...
North American pawpaw [Asimina triloba (L.) Dunal] is a temperate climate member of the Annonaceae used as an ornamental and specialty tree fruit crop. Micropropagation could provide a clonal propagation method for plant production and contribute to germplasm preservation. A pawpaw culture was established that has produced shoot-bud clusters for over six years when maintained on a plant growth ...
Oocyte cryopreservation is of key importance in the preservation and propagation of germplasm. Interest in oocyte cryopreservation has increased in recent years due to the application of assisted reproductive technologies in farm animals such as in vitro fertilization, nuclear transfer and the need for the establishment of ova/gene banks worldwide. However, the cryopreservation of the female ga...
Preservation and use of wild oat species germplasm are essential for further improvement of cultivated oats. We analyzed the transferability and utility of cultivated (white) oat Avena sativa (AACCDD genome) microsatellite markers for genetic studies of black oat A. strigosa (A(s)A(s) genome) genotypes. The DNA of each black oat genotype was extracted from young leaves and amplified by PCR usin...
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