Scholarlink

<p><i>Eremanthus erythropappus</i>, a species valued for its <i>α</i>-bisabolol-rich essential oil used in the cosmetic and pharmaceutical industries, has traditionally been exploited through wild harvesting. To support sustainable industrial production, genetic improvement through early selection can enhance breeding efficiency and shorten breeding cycles. This study aimed to estimate the optimal selection age for height (H) and diameter at breast height (DBH) in open-pollinated progenies of <i>E. erythropappus</i>. A field trial was conducted in Baependi, Minas Gerais, Brazil, with 116 half-sib families in a complete randomized block design comprising linear plots of six plants and seven replicates. Measurements for H and DBH were taken at multiple ages (2, 2.5, 4, 4.5, 5.5, and 11&#xa0;years). Genetic parameters, age–age correlations, and selection efficiencies were analyzed using Selegen REML/BLUP software. Results revealed a general increase in both additive and environmental genetic variances over time. Heritability for H decreased with age, while heritability for DBH increased. Moderate to high genetic correlations between early and mature ages were observed, confirming the effectiveness of early selection. The optimal selection age was determined to be 4&#xa0;years for H and 4.5&#xa0;years for DBH. These findings underscore the potential of early selection to accelerate genetic gains and optimize plantation management, contributing to sustainable and efficient industrial production of <i>E. erythropappus</i>.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Breeding Eremanthus erythropappus for industrial uses: insights from long-term early selection and genetic analysis

  • 期刊论文

  • 发表日期：

    2025年4月3日

查看全文
  • Rodolfo Soares de Almeida,
  • Lavinia Barbosa Oliveira,
  • Adelson Lemes da Silva Júnior,
  • Fernanda Leite Cunha,
  • Matheus Santos Luz,
  • Lucas Amaral de Melo

摘要

Eremanthus erythropappus, a species valued for its α-bisabolol-rich essential oil used in the cosmetic and pharmaceutical industries, has traditionally been exploited through wild harvesting. To support sustainable industrial production, genetic improvement through early selection can enhance breeding efficiency and shorten breeding cycles. This study aimed to estimate the optimal selection age for height (H) and diameter at breast height (DBH) in open-pollinated progenies of E. erythropappus. A field trial was conducted in Baependi, Minas Gerais, Brazil, with 116 half-sib families in a complete randomized block design comprising linear plots of six plants and seven replicates. Measurements for H and DBH were taken at multiple ages (2, 2.5, 4, 4.5, 5.5, and 11 years). Genetic parameters, age–age correlations, and selection efficiencies were analyzed using Selegen REML/BLUP software. Results revealed a general increase in both additive and environmental genetic variances over time. Heritability for H decreased with age, while heritability for DBH increased. Moderate to high genetic correlations between early and mature ages were observed, confirming the effectiveness of early selection. The optimal selection age was determined to be 4 years for H and 4.5 years for DBH. These findings underscore the potential of early selection to accelerate genetic gains and optimize plantation management, contributing to sustainable and efficient industrial production of E. erythropappus.