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Plants (Basel). 2023 Aug 28;12(17):3078. doi: 10.3390/plants12173078.
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Exploring the molecular basis of heterosis for plant breeding.探索杂种优势的分子基础，用于植物育种。
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The Arabidopsis F-box E3 ligase RIFP1 plays a negative role in abscisic acid signalling by facilitating ABA receptor RCAR3 degradation.拟南芥F-box E3连接酶RIFP1通过促进脱落酸受体RCAR3的降解，在脱落酸信号传导中发挥负向作用。
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What is crop heterosis: new insights into an old topic.什么是作物杂种优势：对一个老话题的新见解。
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基于桉树控制授粉群体的配合力和杂种优势分析

Analysis of combining ability and heterosis based on controlled pollination populations of eucalypt.

作者信息

Su Zhiyi, Lu Wanhong, Cao Haoyang, Liu Guo, Lin Yan, Huang Anying, Luo Jianzhong

机构信息

Research Institute of Fast-Growing Trees, Chinese Academy of Forestry, 30 Mid Renmin Dadao, Zhanjiang, 524022, Guangdong, China.

出版信息

Sci Rep. 2025 Apr 2;15(1):11255. doi: 10.1038/s41598-025-94204-w.

DOI:10.1038/s41598-025-94204-w
PMID:40175428
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11965460/
Abstract

Artificial hybridization remains the most effective method for genetic improvement of eucalypt, though limited research exists on the genetic basis of heterosis for interesting traits in Chinese eucalypt. We attempted to use Python in combined with SAS and SPSS to explore the relationship between parental combining ability and heterosis in controlled pollination populations of eucalypt. Our results indicated that E. urophylla had the highest general combining ability (GCA). The special combining ability (SCA) of U3423 × 3327, 06H16 × LL131, and H0733 × U6 were the highest. H0733 × U6, H0733 × P9060, and (E. urophylla × E. grandis) × 06H241 had the strongest mid-parent heterosis (MPH). U3423 × 3327, U952 × C2232, and (E. urophylla × E. grandis) × 06H241 had the strongest high-parent heterosis (HPH). We found that completely controlled by non-additive effects were (E. tereticornis × E. urophylla) × (E. urophylla), E. urophylla or (E. urophylla × E. grandis) × (open pollination). Fully controlled by additive effects were (E. tereticornis × E. urophylla) × E. camaldulensis or E. grandis, (E. urophylla) × (E. pellita × E. tereticornis), (E. urophylla × E. grandis) × E. pellita or E. tereticornis. All the findings in the present research explained the genetic basis of heterosis in eucalypt growth, and enriched the theory of hybrid breeding in eucalypt.

摘要

人工杂交仍然是桉树遗传改良最有效的方法，不过关于中国桉树中有趣性状杂种优势的遗传基础，相关研究有限。我们尝试结合使用Python与SAS和SPSS，来探究桉树控制授粉群体中亲本配合力与杂种优势之间的关系。我们的结果表明，尾叶桉具有最高的一般配合力（GCA）。U3423×3327、06H16×LL131和H0733×U6的特殊配合力（SCA）最高。H0733×U6、H0733×P9060和（尾叶桉×巨桉）×06H241具有最强的中亲杂种优势（MPH）。U3423×3327、U952×C2232和（尾叶桉×巨桉）×06H241具有最强的高亲杂种优势（HPH）。我们发现，（细叶桉×尾叶桉）×（尾叶桉）、尾叶桉或（尾叶桉×巨桉）×（开放授粉）完全由非加性效应控制。完全由加性效应控制的是（细叶桉×尾叶桉）×赤桉或巨桉、（尾叶桉）×（粗皮桉×细叶桉）、（尾叶桉×巨桉）×粗皮桉或细叶桉。本研究中的所有发现解释了桉树生长杂种优势的遗传基础，并丰富了桉树杂交育种理论。