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基因参数变化和Pinus koraiensis在40年后的成长中与年龄的相关性后代测试

Kyungmi Lee¹, Changyoung Oh², In Sik Kim²

¹Forest Tree improvement and Biotechnology Division, Forest Bioresources Department, National Institute of Forest Science, Suwon, 16631, Republic of Korea. kmile@korea.kr.

BMC plant biology

|February 3, 2024

概括

早期选择Pinus koraiensis在26-30岁之间是有效的,这得到了强大的遗传关联的支持. 这优化了树木育种策略,以提高木材生产和生态价值.

科学领域:

林业和遗传学林业和遗传学
量化遗传学量化遗传学
树木育种树木育种

背景情况:

树木长寿的改善需要有效的早期选择策略.
了解遗传参数变化和年龄相关性对于最佳的早期选择时间至关重要.
有限的研究存在于Pinus koraiensis的年龄-年龄相关性,因为后代试验接近旋转年龄.

研究的目的:

为了研究Pinus koraiensis后代的遗传参数趋势.
分析Pinus koraiensis在40年的生长特征的年龄-年龄相关性.
为精确的早期选择提供洞察力. 在Pinus koraiensis树木繁殖中.

主要方法:

使用线性混合效果模型与二维空间自回归结构.
在两个地点对Pinus koraiensis的后代进行了评估,超过11次评估,跨越40年.
测量高度,直径和体积增长,用于遗传参数和相关性分析.

主要成果:

遗传性估计在特征和年龄 (0.083-0.781) 之间有所不同.
高度遗传性下降,而直径和体积估计相对保持不变.
年龄-年龄相关性 (表型,遗传,等级) 通常在40岁左右增加,26岁和30岁时的高值.

结论:

在26-30岁时早期选择优秀的Pinus koraiensis基因型,这是由遗传收益和强大的相关性支持的.
这些发现为树木育种计划中精确的早期选择提供了宝贵的见解.
未来的研究应该探索不平衡的数据分析和早期选择效益的经济验证.

关键词:

年龄 - 年龄相关性.遗传参数遗传参数松树 (Pinus koraiensis) 是一个古老的松树.后代测试是对后代进行测试.树木的改善树木的改善

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