Analysis of genetic parameters of growth and wood traits provides insight into the genetic improvement of Schima superba

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-03-01 DOI:10.1007/s11295-024-01641-1

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Abstract

Schima superba (Theaceae) is widely distributed in subtropical China, and is the main timber and ecological afforestation tree species. This study aimed to provide a practical basis for the genetic improvement of wood traits of Schima superba. Herein, 10-year-old, half-sib families S. superba trees were used to reveal the genetic variation and control of growth traits and wood traits, as well as the correlation between them. The results revealed significant differences in tree height, DBH, and wood basic density among families. Furthermore, the differences in wood anatomical traits between families increased with age. The order of phenotype and genetic variation among families from large to small was DBH, tree height, vessel, fiber, and wood basic density. The phenotype variation and genetic variation of wood anatomical traits also increased with age. Heritability estimates revealed that wood basic density, DBH, and tree height were under stronger genetic control; fiber and vessel were under moderate genetic control. The correlation results showed that tree height, DBH, and wood basic density could be selected independently. Wood basic density and wood anatomical traits together could be improved. Moreover, based on the selection traits of DBH and WBD, families with excellent growth and wood traits were selected using breeding values.

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对生长和木质性状遗传参数的分析有助于深入了解超马属植物的遗传改良

摘要五味子广泛分布于中国亚热带地区，是主要的用材树种和生态造林树种。本研究旨在为超级海马木材性状的遗传改良提供实用依据。本研究以10年生半同父异母S. superba树为研究对象，揭示了其生长性状和木材性状的遗传变异、调控及其相关性。结果显示，不同家系的树高、DBH和木材基本密度存在显著差异。此外，随着树龄的增长，不同家系之间木材解剖学性状的差异也在增大。从大到小，家系间表型和遗传变异的顺序依次为 DBH、树高、血管、纤维和木材基本密度。木材解剖性状的表型变异和遗传变异也随着年龄的增长而增加。遗传力估计结果显示，木材基本密度、DBH和树高受到较强的遗传控制；纤维和血管受到中等程度的遗传控制。相关性结果表明，树高、DBH 和木材基本密度可以独立选择。木材基本密度和木材解剖学性状可以共同提高。此外，根据 DBH 和 WBD 的选择性状，利用育种值选出了生长和木材性状优良的家系。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.

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