The Symbiosis Of "Genre" And "Auteur" | | Posted on:2007-02-07 | Degree:Master | Type:Thesis | | Country:China | Candidate:J Chen | Full Text:PDF | | GTID:2155360185961866 | Subject:Radio and Television Arts | | Abstract/Summary: | PDF Full Text Request | | important. A human-aided natural regeneration is proposed to protect and restore natural populations. To maintain genetic variation in recovered populations, we should avoid collecting seeds from so-called "better trees", which may lead to low diversity and inbreeding depression, as well as mixing seeds from different population, which may lead to outcrossing depression though the diversity may be increased.(6)The present study of M. glyptostroboides indicated that recovery of endangered species is not merely recovering a species' numbers, but also genetic composition. Population genetics and natural regeneration should be considered in the criteria for downlisting or delisting of endangered species, given that the ultimate goal of conserving threatened and endangered species is to construct populations that maintain genetic variability and recover their ability to cope with the changing environments. | | Keywords/Search Tags: | conservation, M. glyptostroboides, wild and artificial populations, phylogenetics, genetic structure, seed set, seedling growth, mating system, regeneration, SSR | PDF Full Text Request | Related items |
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