Update of Genetic Linkage Map and QTL Analysis for Growth Traits in Eucommia ulmoides Oliver

Jin, Cangfu; Li, Zhouqi; Yu, Li; Wang, Shuhui; Li, Long; Liu, Minhao

doi:10.3390/f11030311

Cited by 7 publications

(2 citation statements)

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“…To satisfy directional improvement of E. ulmoides, many studies have been conducted to understand target traits. For example, genetic linkage maps have been constructed to analyze the quantitative trait loci of growth traits (Li et al, 2014a;Jin et al, 2020). Moreover, E. ulmoides genomes have been assembled to guide gutta-percha biosynthesis (Wuyun et al, 2018;.…”

Section: Discussionmentioning

confidence: 99%

“…Gutta-percha, chlorogenic acid, and rutin are the main harvest products of E. ulmoides (Deng et al, 2021); hence, their contents (economic traits) and leaf yield determine the economic output. Growth traits, such as tree height, diameter at breast height, and ground diameter, can be used to measure the bark yield (Zhang et al, 2002) and growth situation (Li et al, 2014a;Jin et al, 2020). Regarding the improvement of E. ulmoides, superior genotypes (Du, 1997;Zhang et al, 2004;Du et al, 2010aDu et al, ,b,c, 2011Du et al, , 2013aDu et al, ,b, 2014aDu L. et al, 2014) or cultivation areas (Du et al, 2005;Dong et al, 2011;Wu et al, 2019;Wang et al, 2020) have been selected.…”

Section: Introductionmentioning

confidence: 99%

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Phenotypic Trait Subdivision Provides New Sight Into the Directional Improvement of Eucommia ulmoides Oliver

Deng

Hu²,

et al. 2022

Front. Plant Sci.

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Eucommia ulmoides Oliver has been used extensively in many fields. To satisfy increasing demand, great efforts must be made to further improve its traits. However, limited information is available on these traits, which is a factor that restricts their improvement. To improve traits directionally, nine clones were assigned to six sites to analyze the effect of different variation sources (the genotype, site, and genotype × environment interaction) on the phenotypic trait. In addition, a mixed linear model was used to assess the contribution of variations. In general, for most traits, the site effect accounted for a larger proportion of the variance, followed by the genotype and genotype × environment interaction effects. All the studied genotypes and sites had a significant effect, indicating that they could be improved by selecting preferable genotypes or cultivation areas, respectively. Interestingly, growth traits or economic traits could be improved simultaneously. Trait performance and stability are necessary when selecting genotypes. Moreover, the discriminating ability of genotypes should be considered in selecting cultivation areas. Annual mean temperature and annual sunshine duration proved to be crucial factors that affected the traits. They were correlated positively with economic traits and leaf yield and correlated negatively with growth traits. These findings contributed to selecting a wider range of cultivation areas. Regarding the genotype × environment interaction effect, there were significant differences only in the gutta-percha content, the total number of leaves, and the chlorogenic acid content. These traits could also be improved by choosing appropriate genotypes for the local environment. The research has provided preliminary data on the main factors that affect the traits of E. ulmoides and offered solutions for trait improvement. This information could be a reference for the trait improvement of other plants.

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Section: Discussionmentioning

confidence: 99%