摘要
物种濒危的本质是在自然状况下,种群难以更新和维持。而导致濒危的内在原因就是由于物种的生物学、遗传学因素影响了种群的丰富度。繁殖是种群构建、更新和维持的关键环节,而繁殖成功的标准是能产生成熟个体。从繁殖生物学角度总结木莲属濒危种产生成熟个体的关键环节的研究状况,从其生殖发育异常、交配系统研究、物种自然繁殖特性及个体生存力角度探讨物种致濒的原因。
When a population could not renew and exist sustainably in nature, it will be judged to be an en- dangered species. However, inner nature of species endangerment is biology characters that determine popu- lation abundance. Propagation is a key process to construct, renew and sustain a population. So a criteria judging success of propagation is whether a mature individual could be birthed. In propagation-biology per- spectives, advances in a key process to propagate a mature individual of endangered species of gunus man- glietia are reviewed. Endangered mechanism is discussed from the abnormality of gametophyte development, mating-system, propagation characters and individual＇s survival ability.
出处
《生命科学研究》
CAS
CSCD
北大核心
2014年第1期90-94,共5页
Life Science Research
基金
国家林业局西南地区生物多样性保育实验室基金(BC2010F02)
园林植物与观赏园艺重点学科(500741)
关键词
木莲属
濒危种
繁殖
致濒原因
genus manglietia
endangered species
propagation
endangered mechanism
