Geographic variation in growth and wood traits of &lt;i&gt;Neolamarckia cadamba&lt;/i&gt; in China

Que, Qingmin; Ouyang, Kang; Li, Chunmei; Li, Buye; Song, Huiyun; Li, Pei; Pian, Ruiqi; Li, Huaqing; Chen, Xiaoyang; Peng, Chang-Cao

doi:10.48130/fr-2022-0012

Cited by 3 publications

(5 citation statements)

References 41 publications

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“…Both the global leaf and the wetland plant economics spectra have demonstrated a significant positive correlation between the net photosynthetic rate and the nitrogen content (Wright et al, 2004;Pan et al, 2020). A higher photosynthetic rate, a higher nitrogen content, and a lower specific leaf weight are typical characteristics of resource-acquisitive plants, while lower net photosynthetic rate and nitrogen content, along with a higher specific leaf weight, are typical characteristics of resource-conservative plants (Wright et al, 2004;Reich, 2014;Joswig et al, 2022;Que et al, 2022). Wetland plants generally gather at the "low investment-quick return" end of the resource acquisition spectrum (Pan et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

Response of the functional traits of Schoenoplectus tabernaemontani to simulated warming in the Napahai wetland of northwestern Yunnan, China

Liu,

Zhao,

et al. 2024

Front. Ecol. Evol.

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The impact of climate warming on wetland ecosystems is a current focal point in ecological research. In this study, the Napahai wetland, a typical plateau wetland in northwest Yunnan Province, was selected as the study site to understand the growth and survival strategies of emergent plants in a plateau wetland under climate warming conditions. Open-top chambers (OTCs) were used to simulate warming in three treatments (i.e., control group, 2.0 ± 0.5°C, and 4.0 ± 0.5°C) in order to study the responses of the functional traits of the dominant emergent plant Schoenoplectus tabernaemontani to simulated warming. The results showed that simulated warming significantly reduced the photosynthetic carbon assimilation capacity and biomass accumulation of S. tabernaemontani, as well as its nitrogen content and vascular bundle density, while it significantly increased the vascular bundle size. The growing season accumulated temperature (AT) and the mean temperature of the hottest month (WT) were the main temperature factors influencing the functional traits of S. tabernaemontani. In summary, simulated warming significantly affected the functional traits of S. tabernaemontani, which demonstrated effective adaptation to warming conditions. As the temperature rises and the light and productivity decrease, S. tabernaemontani prioritizes the supply of limited resources to the underground part to ensure the biomass supply of the reproductive structure. This study provides a case for revealing the response patterns and ecological adaptation strategies of plateau wetland plants to climate warming.

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Section: Discussionmentioning

confidence: 99%

Response of the functional traits of Schoenoplectus tabernaemontani to simulated warming in the Napahai wetland of northwestern Yunnan, China

Liu,

Zhao,

et al. 2024

Front. Ecol. Evol.

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“…The second implication is concerned with breeding that is currently being conducted [ 16 , 17 ]. Although small population differentiation was observed with the neutral nrDNA ITS markers, the small population differentiation could also occur for some adaptive quantitative traits.…”

Section: Discussionmentioning

confidence: 99%

“…Although small population differentiation was observed with the neutral nrDNA ITS markers, the small population differentiation could also occur for some adaptive quantitative traits. Previous provenance trials showed that significant but small differences were present among provenances in tree height, DBH, and wood volume [ 17 ]. From the results of both population structure and provenance trials, it is speculated that provenance selection could be effective only for the adaptive traits but not for the neutral or nearly neutral traits.…”

Section: Discussionmentioning

confidence: 99%

“…Recent studies on genetic variation and breeding of N. cadamba covered wide aspects. Provenance trials in China were conducted to assess the genetic variation among provenances in height, DBH (the diameter at the breast height), and wood volume [ 15 , 16 , 17 ]. A progeny test was also reported in India [ 18 ] to estimate the genetic parameters of phenotypic traits and to select better individuals for genetic improvement.…”

Section: Introductionmentioning

confidence: 99%

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Population Structure and Genetic Diversity in the Natural Distribution of Neolamarckia cadamba in China

Ouyang

et al. 2023

Genes

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Neolamarckia cadamba (Roxb.) Bosser is a fast-growing deciduous tree species and belongs to the Neolamarckia genus of the Rubiaceae family. This species has great economic and medical values in addition to being an important timber species for multiple industrial purposes. However, few studies have examined the genetic diversity and population structure in the natural distribution of this species in China. Here, we applied both the haploid nrDNA ITS (619 bp for aligned sequences) and mtDNA (2 polymorphic loci) markers to investigate 10 natural populations (239 individuals in total) that covered most of the distribution of the species in China. The results showed that the nucleotide diversity was π = 0.1185 ± 0.0242 for the nrDNA ITS markers and π = 0.00038 ± 0.00052 for the mtDNA markers. The haplotype diversity for the mtDNA markers was h = 0.1952 ± 0.2532. The population genetic differentiation was small (Fstn = 0.0294) for the nrDNA ITS markers but large (Fstm = 0.6765) for the mtDNA markers. There were no significant effects of isolation by distance (IBD), by elevation, and by two climatic factors (annual average precipitation and tem perature). A geographic structure among populations (Nst<Gst) was absent. Phylogenetic analysis showed a highly genetic mixture among individuals of the ten populations. Pollen flow was substantially greater than seed flow (mp/ms ≫ 1.0) and played a dominant role in shaping population genetic structure. The nrDNA ITS sequences were neutral and all local populations did not undergo demographic expansion. The overall results provide fundamental information for the genetic conservation and breeding of this miraculous tree.

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“…Growth diversity among seed sources (provenances) also occurred in Neolamarckia cadamba (Roxb.) species grown in progeny trial in Guangdong, China [26]. The DMRT showed that the diversity of plant height growth among families in the S. macrophylla progeny trial at the age of 1 year was divided into 14 groups (Figure 2a), and stem diameter was divided into 13 groups (Figure 2b).…”

Section: Growth Variabilitymentioning

confidence: 99%

Estimation of genetic parameter for growth of one year old Swietenia macrophylla King. progeny trial in Trenggalek, East Java

Cahyono,

Mashudi,

Baskorowati

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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After being introduced to Indonesia, Swietenia macrophylla King. has since been widely planted for community and plantation forests in several locations. This study was carried out to ascertain the growth variation, heritability, and genetic correlation of the 1-year-old S. macrophylla progeny trial in Trenggalek, East Java. This progeny trial was designed of incomplete block design (IBD), and the plant materials are 50 families from Banjar-Ciamis, Samigaluh-Kulonprogo, Dlingo-Bantul, Bondowoso-East Java, and Lombok-West Nusa Tenggara. Three individuals were planted in line tree plot for each family, repeated 6 times with a spacing of 4m x 2m. According to the findings, the Bondowoso land race had the best growth with a height and stem diameter of 0.81 m and 1.12 cm, respectively. Families’ varying heights were divided into 14 groups, and the stem diameter was divided into 13 groups. The stem diameter has individual and family heritabilities of 0.23 (moderate) and 0.53 (moderate), respectively, whereas the height’s individual and family heritabilities are 0.39 (high) and 0.65 (high), respectively. Height and stem diameter showed a positive and strong of genetic correlation (0.90).

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Geographic variation in growth and wood traits of <i>Neolamarckia cadamba</i> in China

Cited by 3 publications

References 41 publications

Response of the functional traits of Schoenoplectus tabernaemontani to simulated warming in the Napahai wetland of northwestern Yunnan, China

Response of the functional traits of Schoenoplectus tabernaemontani to simulated warming in the Napahai wetland of northwestern Yunnan, China

Population Structure and Genetic Diversity in the Natural Distribution of Neolamarckia cadamba in China

Estimation of genetic parameter for growth of one year old Swietenia macrophylla King. progeny trial in Trenggalek, East Java

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