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首页> 外文期刊>Silvae Genetica >Genetic Variation in Wood Property and Growth of Taiwania (Taiwania cryptomerioides Hayata)
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Genetic Variation in Wood Property and Growth of Taiwania (Taiwania cryptomerioides Hayata)

机译：台湾木材性状和生长的遗传变异（台湾cryptomerioides Hayata）

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摘要

The genetic variation in wood property and growth of Taiwania (Taiwania cryptomerioides) was investigated at two test sites in the same general location, but one at 1200 m (LK20) and another at 1900 m (LK24). A range-wide sample of 48 open-pollinatedfamilies in Taiwan was involved. The test plantations were 16 years old when the wood property data were collected. Traits studied include wood specific gravity, tracheid length, ring width. DBH at ages 13, 16, and 22 and height at age 13 were also analyzed. Site environment had a dominant effect on growth and wood density, but showed little interaction with family. The site effect was evident in large between-site differences in means, range of family means, and size of family variance components and heri-tability estimates. These differences are attributable to the site characteristics of LK24 (high elevation, upper slope near a mountain crest) and an unfavourable local climate. Taiwania is fast growing and produces quality wood, and is also an interesting species from the perspective of evolutionary biology. Protection of its genetic variability should be a priority to be managed. We propose that the existing five progeny tests be protected since these tests well-represent the genetic variability of the species in Taiwan.
机译：在相同的大致位置上的两个测试地点调查了台湾木（Taiwania cryptomerioides）的木材特性和生长的遗传变异，但一个在1200 m（LK20），另一个在1900 m（LK24）。台湾的48个开放授粉家庭的样本范围广泛。收集木材特性数据时，试验林龄为16年。研究的性状包括木材比重，管胞长度，环宽度。还分析了13、16和22岁时的DBH和13岁时的身高。场地环境对木材的生长和密度起主要作用，但与家庭的相互作用很小。站点效应在均值，家庭均值范围以及家庭方差分量和可遗传性估计值的大小之间存在较大差异时很明显。这些差异归因于LK24的站点特征（高海拔，山顶附近的上坡）和不利的局部气候。 ia木生长迅速，生产优质木材，从进化生物学的角度来看，它也是一个有趣的物种。保护其遗传变异性应成为优先处理事项。我们建议保护现有的五个子代测试，因为这些测试很好地代表了台湾物种的遗传变异性。

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