Inbreeding and inbreeding depression of Paeonia decomposita (Paeoniaceae), a threatened endemic plant to China
Inbreeding and inbreeding depression of Paeonia decomposita (Paeoniaceae), a threatened endemic plant to China
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中国特有濒危植物芍药近交和近交衰退
DOI：
10.1186/s40529-019-0276-8
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发表时间：
2019-12
影响因子：
3.4
通讯作者：
Wang Shi-Quan
中科院分区：
文献类型：
--
作者：
Wang Shi-Quan
研究背景小种群主要易受近交和近交衰退（inbreeding depression，ID）的影响。由于小种群中个体近亲繁殖水平的增加，ID可能会降低种群增长率及其有效大小，并加剧灭绝风险。近交衰退仍然是保护生物学、生态学和进化生物学的一个重要研究领域。本研究旨在阐明的生殖生物学，近亲繁殖，ID ofEscherichia decompositaand保护，管理，并改善他们更好地在future.ResultsEscherichia decompositabelongs异花受精的类别，是部分自交不亲和，此外，它需要传粉种子生产。最近，授粉和传粉者限制的发生影响了结实。低结实率主要与花粉母细胞减数分裂异常、中到低的遗传多样性、干旱和极端天气、传粉者限制或心皮空间限制相关。濒危机制的主要原因之一。在自然条件下，ID的累积值是积极的，和异交后代优于自交field.ConclusionsScandonia decompositarequires授粉，以确保种子生产无论是通过自花受精，异花受精，或。它是异花受精和部分自我兼容，以及一个成功的outcrosser。近亲繁殖频繁发生，导致ID，这对种群的生存构成了潜在的威胁。此外，还需要通过原地和自然回归的方法进行保护。
BackgroundSmall populations are predominantly vulnerable to inbreeding and inbreeding depression (ID). Owing to increased levels of inbreeding on individuals in small populations, ID could decrease the population growth rate, as well as its effective size, and exacerbate the extinction risk. Inbreeding depression remains a crucial area of research in conservation biology, ecology, and evolutionary biology. This study aims to elucidate the reproductive biology, inbreeding, and ID ofPaeonia decompositaand to conserve, manage, and improve them better in the future.ResultsPaeonia decompositabelongs to a xenogamous category and is partially self-compatible; moreover, it requires pollinators for seed production. Lately, the occurrence of pollination and pollinator limitations has affected the seed set. Low seed set primarily correlated with an abnormality of meiosis in the pollen mother cell, moderate to low genetic diversity, drought and extreme weather, pollinator limitation, or carpel space limit. One of the primary reasons for endangered mechanism inP. decompositais the low seed set under natural conditions. The cumulative value of ID was positive, and outcrossed progeny outperformed selfed progeny.ConclusionsPaeonia decompositarequires pollinators to ensure seed production either through autogamy, geitonogamy, or allogamy. It is both allogamous and partially self-compatible, as well as a successful outcrosser. Inbreeding occurs frequently and results in ID, which imposes a potential threat to the survival of populations. Besides, it needs conservation via in situ andnatural returnmethods.
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影响因子：
5.3
作者：
通讯作者：
--
DOI：
--
发表时间：
2007
期刊：
--
影响因子：
--
作者：
D. Lloyd;D. Schoen
通讯作者：
D. Lloyd;D. Schoen
影响因子：
1.5
作者：
L. Lim
通讯作者：
L. Lim
影响因子：
3.3
作者：
B. Latter;J. Mulley;D. Reid;L. Pascoe
通讯作者：
B. Latter;J. Mulley;D. Reid;L. Pascoe
DOI：
10.5751/es-00387-060116
发表时间：
2002-06
期刊：
Conservation Ecology
影响因子：
--
作者：
B. Brook;D. Tonkyn;Julian J. O'Grady;R. Frankham
通讯作者：
B. Brook;D. Tonkyn;Julian J. O'Grady;R. Frankham