Morphological characteristics of tree crowns of Cunninghamia lanceolata var. Luotian

Xu, Yang; Du, Changqing; Huang, Guowei; Li, Zhenfang; Xu, Xiangyang; Zheng, Jingjin; Wu, Chu

doi:10.1007/s11676-019-00901-4

Cited by 7 publications

(8 citation statements)

References 45 publications

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“…Previous studies have suggested that ABA may be an inhibitor of bud development (Chatfield, 2000), suggesting that ABA may inhibit the development of the axillary buds of Luotian branches, whose branches grow faster than those of Lanceolata, thus leading to the formation of the crown structure of Luotian and naturally drooping branches. These results also explained the hypothesis that the thicker crowns of Luotian is related to the strong sprouting ability of the axillary buds of the main trunk in Luotian or to the simultaneous inhibition of the apical buds on the lateral branches (Xiong, 1984;Xu et al, 2020). However, the direct relationship between ABA and early branch death of Luotian remains to be further verified by subsequent experiments.…”

Section: Discussionsupporting

confidence: 57%

“…In this study, the crown architecture of Luotian is narrow, pointed, and tower-like, and the older drooping branches die naturally at the age of 6-7 years old, thus the forest species is an ideal one for plantations with high densities and farmland protection. Based on our previous study, the branching angles of Luotian were remarkably larger than those of Lanceolata, 71.8% of the branching angles in Luotian were more than 90°, resulting the branch drooping of Luotian (Xu et al, 2020).…”

Section: Discussionmentioning

confidence: 86%

“…Their results showed that neither of IAA and ZR changed the shape of the vertical branches of cherry and peach, and it was believed that IAA and ZR might synergistically regulate the formation of xylem during the bending of the vertical branches to gravity with GA3. Furthermore, higher concentrations of IAA and ZR caused the greater base diameters and lengths of branches in Lanceolata, which was explained in the investigation carried out by Xu (2020).…”

Section: Discussionmentioning

confidence: 89%

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Endogenous hormone and nutritional ingredient of pendulous characteristics of Cunninghamia lanceolata var. Luotian

Yang

et al. 2022

Not Bot Horti Agrobo

Self Cite

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Cunninghamia lanceolata var. Luotian (herein, Luotian), a natural variety of Cunninghamia lanceolata (Chinese fir, herein Lanceolata), shows great potential for agricultural protection short-period and high-density plantations because of its narrow, pointed, tower-shaped crowns, thin braches and older drooping branches that die naturally at 6-7 years old. The physiological mechanisms of the pendulousness and the natural death of the branches are still unclear. To investigate these mechanisms, phytohormone levels and nutritional ingredients of different positions of branches in Luotian and Lanceolata were determined. Phytohormone analyses showed that IAA and ZR played critical functions on the branch initial growth, and that GA3 was related to bending of branches. Meanwhile, ABA may enhance abscission of the branches in Luotian. Nutritional ingredient analyses showed that the accumulation of nutritional ingredients in Luotian and Lanceolata were consistent with the morphology of their branches. An integrated analysis implied that phytohormones had a strong influence on pendulous characteristics by interacting with other factors. This study helps to elucidate the mechanism governing the pendulous trait and provides theoretical basis and technical support for its cultivation, introduction, plantation management and genetic improvement.

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Section: Discussionsupporting

confidence: 57%

Section: Discussionmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 89%

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Endogenous hormone and nutritional ingredient of pendulous characteristics of Cunninghamia lanceolata var. Luotian

Yang

et al. 2022

Not Bot Horti Agrobo

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“…Second, topography influenced the dominant stand height of C. lanceolata, with elevation being the most significant factor, followed by soil type, aspect, and slope (Zhu et al, 2019). Third, the structural characteristics of the tree crowns of C. lanceolata were such that leaf biomass increased with the crown thickness (Xu et al, 2019), and that related to thinning due to the effects of photosynthesis which is dependent on needleleaf age (Li et al, 2017). The self-thinning exponents of C. lanceolata changed systematically with the mortality rate classes, and −1.5 was a transitory value in the course of self-thinning (Sun et al, 2011).…”

Section: Growth and Factors Affecting C Lanceolata Forestsmentioning

confidence: 99%

A Review of Cunninghamia lanceolata (Lamb.) Hook: A Recent Update and Potential Application in Vietnam

2020

vjas

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By reviewing worldwide literature, this paper aimed to systematically collate available information about the species Cunninghamia lanceolata. Based on the findings of the review, including the species’ floral characteristics; updated distribution; historical knowledge and heritage; growth and factors influencing its forests; soil nutrition and microbes; carbon storage; wood; and chemicals and essential oils, we have identified issues for consideration regarding the use of this species for big timber production in Vietnam. We propose that it is suitable for a range of applications: for small or large timber plantations, mono/mixed plantations, and agroforestry. If planted at lower altitudes or warmer temperatures, its growth is likely to be improved, but seed production may be less successful. Cultivation of this species for big timber production should be undertaken according to silviculture best practices, ensuring good seed quality, a suitable stand density, and appropriate fertilization thinning strategies, in support of government policies and in accordance with current science and technology.

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“…Hook. ), an important timber species in south China, is widely distributed within 101 • 30 -121 • 53 E and 21 • 41 -34 • 03 N. Under different environmental conditions, various types of Chinese fir were identified [1][2][3][4]: C. unica, C. lanceolata var. Luotian, C. lanceolata (Lamb.)…”

Section: Introductionmentioning

confidence: 99%

Characteristics and Driving Factors of Rhizosphere Bacterial Communities of Chinese Fir Provenances

Yan

Huang

et al. 2021

Forests

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Rhizosphere bacteria affect the diversity of soil functions, playing important roles in the growth and expansion of Chinese fir. Understanding the driving factors of rhizosphere bacterial distribution is imperative when comparing bacterial diversity and composition under different Chinese fir provenances. We investigated the growth of Chinese fir belts and the effects of climate, geographic location, and soil nutrients. Using 16S rDNA next-generation sequencing analysis, the bacterial communities of 16 Chinese fir provenances were compared. The bacterial compositionsof Dechang, Junlian, Shangrao, Zhenxiong, Yangxin, Xinyang, Luotian, and Tianmushan provenances weredistinct from others. Generally, higher-latitude provenances showed more biomarkers (LDA = 2). Rhizosphere bacterial α-diversity was the highest in Hunan Youxian and lowest in Henan Xinyang (p < 0.05). From south to north, bacterial α-diversity initially increased and then decreased. From east to west in the middle belt, bacterial α-diversity followed a “W” trend, with the eastern middle belt having the highest values, especially near Hunan, Fujian, and Zhejiang provinces. Amongst environmental factors, soil nutrient content (Mg, P and K) and stoichiometric ratio (Ca/Mg, K/Ca and N/P), along with precipitationrate primarily controlled rhizosphere bacterial diversity. Soil pH had a significant impact on the relative abundance of rhizosphere soil bacteria. Our findings offer insight into the evolution of Chinese fir and provide a scientific basis for soil microbial community improvement of Chinese fir provenances.

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Morphological characteristics of tree crowns of Cunninghamia lanceolata var. Luotian

Cited by 7 publications

References 45 publications

Endogenous hormone and nutritional ingredient of pendulous characteristics of Cunninghamia lanceolata var. Luotian

Endogenous hormone and nutritional ingredient of pendulous characteristics of Cunninghamia lanceolata var. Luotian

A Review of Cunninghamia lanceolata (Lamb.) Hook: A Recent Update and Potential Application in Vietnam

Characteristics and Driving Factors of Rhizosphere Bacterial Communities of Chinese Fir Provenances

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