Phenotypic Diversity In Natural Populations of Docynia Delavayi (Franch.) Schneid.

Ou, Wenli; Lin, Yi Pu; Li, Lianxing

doi:10.21203/rs.3.rs-1322625/v1

Cited by 3 publications

(3 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the phenotypic diversity of nine natural populations of Paeonia delavayi was studied by using 31 morphological indexes. It was found that the CV ranged from 3.22% to 76.12%, and the average CV among populations was 25.24% [ 52 ]. The degree of variation in 23 flowering phenology-related traits and 7 ornamental traits of tree peony observed in this study differed from a previous report, perhaps because of the differences in population size, plant materials, cultivar-group construction, and modulation traits.…”

Section: Discussionmentioning

confidence: 99%

Genome-wide association study of 23 flowering phenology traits and 4 floral agronomic traits in tree peony (Paeonia section Moutan DC.) reveals five genes known to regulate flowering time

Guo

Wang³

et al. 2022

Horticulture Research

View full text Add to dashboard Cite

Tree peony is a unique traditional flower in China, with large, fragrant, and colorful flowers. However, a relatively short and concentrated flowering period limits the applications and production of tree peony. A genome-wide association study (GWAS) was conducted to accelerate molecular breeding for the improvement of flowering phenology traits and ornamental phenotypes in tree peony. A diverse panel of 451 tree peony accessions was phenotyped for 23 flowering phenology traits and 4 floral agronomic traits over three years. Genotyping by sequencing (GBS) was used to obtain a large number of genome-wide SNPs (107 050) for the panel genotypes, and 1047 candidate genes were identified by association mapping. Eighty-two related genes were observed during at least two years for flowering, and 7 SNPs repeatedly identified for multiple flowering phenology traits over multiple years were highly significantly associated with 5 genes known to regulate flowering time. We validated the temporal expression profiles of these candidate genes and highlighted their possible roles in the regulation of flower bud differentiation and flowering time in tree peony. This study shows that GWAS based on GBS can be used to identify the genetic determinants of complex traits in tree peony. The results expand our understanding of flowering time control in perennial woody plants. Identification of markers closely related to these flowering phenology traits can be used in tree peony breeding programs for important agronomic traits.

show abstract

Section: Discussionmentioning

confidence: 99%

Genome-wide association study of 23 flowering phenology traits and 4 floral agronomic traits in tree peony (Paeonia section Moutan DC.) reveals five genes known to regulate flowering time

Guo

Wang³

et al. 2022

Horticulture Research

View full text Add to dashboard Cite

show abstract

“…All in all, it is a wild resource that can be widely used as medicinal and edible with high development and utilization value (Wang et al 2022b(Wang et al , 2023b. Studies of D. delavayi have focused on various aspects, including asexual reproduction technology exploration (Liu and Hu 1984;Li et al 2019), biological characterization (Li et al 2010), transcriptomic and metabolomic analyses fruit metabolites (Wang et al 2022b;Chen et al 2022), molecular maker development and genetic diversity analysis (Peng et al 2020;Li et al 2022).…”

Section: Introductionmentioning

confidence: 99%

Selection of superior provenances/families of Docynia delavayi based on phenotypic variation analysis on seedling growth traits

Zhu

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

Docynia delavayi (Franch.) Schneid. is a wild fruit tree, which can be widely used for medicinal and edible with a high value of exploitation and utilization. To gain greater insight into the genetic variation of growth traits in D. delavayi, we investigated the growth traits of a total of 62 half-sib families from 10 provenances. Based on the data of growth traits, variation analysis, correlation analysis, principal component analysis, estimation of genetic parameters and comprehensive analysis were carried on. The results of variance analysis showed that all traits, except for branch length, were significant or extremely significant differences among provenances, while among families, only leaf width showed no significantly different. The results of correlation analysis showed that all growth traits, except for branch length and petiole length, had a significant or extremely significant correlation with the geo-climatic factors. Three principal components were extracted by principal component analysis, they were used as indicators for the comprehensive evaluation of D. delavayi from different provenances, and five excellent provenances were selected (LC, LH, SD, YJ, XY). The results of genetic parameters estimation showed that all indicators except leaf length and leaf width had a high potential for genetic improvement. Therefore, five traits (SH, GD, BL, PL, TNL)were used as comprehensive index to select superior families, and a total of 20 superior families were selected. This study will lay a theoretical foundation and practical guidance for the genetic improvement of D. delavayi.

show abstract

“…It has been applied to the systematic classification of species such as bryophytes [14], ferns [15][16][17], gymnosperms [18,19], and angiosperms [20][21][22]. Currently, research on tree peonies mainly focuses on morphology [23,24], palynology [2], cytology [25], molecular systematics [26,27]. Systematic observation on epidermal features of wild tree peonies leaves has not been reported.…”

Section: Introductionmentioning

confidence: 99%

Leaf Epidermal Morphology of Ten Wild Tree Peonies in China and Its Taxonomic Significance

Jia

Wang

et al. 2022

Horticulturae

View full text Add to dashboard Cite

This research reports for the first time the epidermal characteristics of 10 wild tree peonies belonging to the sect. Moutan group. The leaf micromorphology of 10 wild tree peonies—P. qiui, P. decomposita, P. jishanensis, P. ostii, P. delavayi, P. lutea, P. potanini, P. rockii, P. ludlowii and P. cathayana—were investigated by light and scanning electron microscopy. The characteristics of the leaf epidermis were found to be constant at the species level, but variable among species. Patterns of anticlinal walls were slightly wavy to wavy, very wavy, and straight to curved. All studied tree peonies presented stomata only on the abaxial surfaces of the leaves. The stomatal apparatus was elliptical or rectangular. Stomatal density was highest on the abaxial surface in P. qiui (300.25 per mm2), and lowest in P. jishanensiss (198.41 per mm2). Stomatal Index was highest on the adaxial surface of P. potanini (27.30%), and lowest in P. ludlowii (18.35%). Trichomes were observed in four studied peonies, which appeared only on the abaxial surface of the leaves, and three basic types of trichomes were identified. The long conical trichomes were distinctive of P. jishanensis, and the flat-shaped trichomes were characteristic of P. qiui, P. rockii and P. cathayana, and commonly occurred in the intervenous region and leaf veins. Stomatal shape, stomatal density, anticlinal wall patterns and trichomes may be of great value and significance for the classification of wild tree peonies. The principal component analysis showed that the component 1, component 2 and component 3 were the most components and nearly 79% of the observed variation. The key to the identification of wild tree peonies based on trichomes and stomata diversity was provided.

show abstract

Phenotypic Diversity In Natural Populations of Docynia Delavayi (Franch.) Schneid.

Cited by 3 publications

References 17 publications

Genome-wide association study of 23 flowering phenology traits and 4 floral agronomic traits in tree peony (Paeonia section Moutan DC.) reveals five genes known to regulate flowering time

Genome-wide association study of 23 flowering phenology traits and 4 floral agronomic traits in tree peony (Paeonia section Moutan DC.) reveals five genes known to regulate flowering time

Selection of superior provenances/families of Docynia delavayi based on phenotypic variation analysis on seedling growth traits

Leaf Epidermal Morphology of Ten Wild Tree Peonies in China and Its Taxonomic Significance

Contact Info

Product

Resources

About