Primary Selection of Excellent Catalpa fargesii Clones Based on Growth and Wood Properties
Abstract
:1. Introduction
2. Materials and Methods
2.1. Material Source
2.2. Experimental Site
2.3. Measurement Index
2.4. Data Analysis
3. Results
3.1. Overall Variation Analysis of Growth and Wood Properties of C. fargesii Clones
3.2. Correlation Analysis of Growth Characteristics, Wood Properties and Geographical and Climatic Factors of C. fargesii Clones
3.2.1. Correlation of Growth Traits of C. fargesii Clones
3.2.2. Correlation between Growth Traits and Wood Properties of C. fargesii Clones
3.2.3. Correlation between the Growth and Wood Properties of C. fargesii Clones and Geographical and Climatic Factors
3.3. Comprehensive Evaluation of C. fargesii Clones
3.3.1. Clonal Evaluation Based on Growth Traits
3.3.2. Clonal Evaluation Based on Wood Traits
3.3.3. Clonal Combined Evaluation Based on Growth Wood Traits
3.4. Analysis of the Environmental Factors of the Selected Clonal Provinces
4. Discussion
4.1. Intraspecific Variation in C. fargesii Is Substantial and Clone Breeding Potential Is Great
4.2. Suitable Tree Age for Early Selection of Excellent C. fargesii Clones
4.3. Effects of Provincial Geographical and Climatic Factors on Clonal Selection
4.4. Selection of Excellent C. fargesii Clones
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Province | City | Number of Clones | Altitude /m | Longitude (E)/° | Latitude (N)/° | Annual Mean Temperature/°C | Annual Precipitation/mm |
---|---|---|---|---|---|---|---|
Gansu | Tianshui | 97 | 1509.48 | 105.72 | 34.57 | 10.93 | 592.98 |
Longnan | 22 | 1295.68 | 105.61 | 33.80 | 11.22 | 716.33 | |
Qingyang | 36 | 1417.50 | 106.84 | 35.19 | 9.56 | 542.58 | |
Pingliang | 8 | 1318.19 | 107.39 | 35.42 | 9.65 | 556.61 | |
Shaanxi | Xianyang | 3 | 1084.00 | 107.51 | 35.12 | 9.10 | 584.00 |
Baoji | 1 | 910.00 | 107.06 | 34.36 | 9.10 | 584.00 | |
Shanxi | Linfen | 17 | 790.35 | 111.16 | 35.86 | 10.47 | 556.71 |
Yuncheng | 5 | 447.20 | 110.42 | 34.97 | 14.10 | 530.00 | |
Henan | Luoyang | 11 | 395.00 | 112.45 | 34.62 | 14.34 | 565.27 |
Age | 1 a | 9 a | 11 a | 13 a | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Characters | Height /m | Diameter /mm | Height /m | Diameter /mm | Height /m | Diameter /mm | Height /m | Diameter /mm | Pilodyn value/mm | MOE /GPa |
Mean ± SD | 1.65 ± 0.23 | 16.70 ± 2.60 | 5.15 ± 0.92 | 60.22 ± 13.15 | 6.28 ± 0.98 | 76.85 ± 14.45 | 6.31 ± 0.86 | 92.91 ± 23.59 | 14.01 ± 1.70 | 9.22 ± 1.44 |
Amplitude | 1.07–2.32 | 7.60–21.94 | 2.45–7.18 | 23.09–94.77 | 3.20–9.20 | 29.84–133.08 | 3.60–8.00 | 43.00–152.00 | 8.92–25.00 | 4.76–15.45 |
CV/% | 13.73 | 15.59 | 17.81 | 21.84 | 15.60 | 18.80 | 13.71 | 26.17 | 12.12 | 15.59 |
F Value | 29.12 ** | 6.35 ** | 7.58 ** | 6.13 ** | 8.62 ** | 4.77 ** | 10.12 ** | 5.08 ** | 8.27 ** | 3.92 ** |
Repeatability | 0.97 | 0.84 | 0.87 | 0.84 | 0.88 | 0.79 | 0.90 | 0.80 | 0.88 | 0.75 |
H′ | 2.083 | 2.040 | 2.043 | 1.830 | 1.939 | 1.983 | 1.898 | 2.042 | 1.825 | 1.854 |
Province | City | Total | 9 Growth Traits | 11 Growth Traits | 13 Growth Traits | 13 Wood Traits | 13 Growth and Wood Traits | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Number | Rate (%) | Number | Rate (%) | Number | Rate (%) | Number | Rate (%) | Number | Rate (%) | Number | Rate (%) | ||
Gansu | Tianshui | 97 | 48.50 | 12 | 60.00 | 12 | 60.00 | 9 | 45.00 | 11 | 55.00 | 13 | 65.00 |
Longnan | 22 | 11.00 | 1 | 5.00 | 1 | 5.00 | 4 | 20.00 | 0 | 0.00 | 1 | 5.00 | |
Qingyang | 36 | 18.00 | 1 | 5.00 | 1 | 5.00 | 0 | 0.00% | 2 | 10.00 | 1 | 5.00 | |
Pingliang | 8 | 4.00 | 4 | 20.00 | 5 | 25.00 | 5 | 25.00 | 0 | 0.00 | 0 | 0.00 | |
Shaanxi | Xianyang | 3 | 1.50 | 1 | 5.00 | 1 | 5.00 | 1 | 5.00 | 0 | 0.00 | 1 | 5.00 |
Baoji | 1 | 0.50 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | |
Shanxi | Linfen | 17 | 8.50 | 0 | 0.00 | 0 | 0.00 | 1 | 5.00 | 2 | 10.00 | 3 | 15.00 |
Yuncheng | 5 | 2.50 | 1 | 5.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00% | 0 | 0.00 | |
Henan | Luoyang | 11 | 5.50 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 5 | 25.00 | 1 | 5.00 |
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Yu, X.; Li, F.; Zhao, Q.; Wang, J.; Liu, Y.; Yi, F.; Guo, X.; Zhang, P.; Ma, W. Primary Selection of Excellent Catalpa fargesii Clones Based on Growth and Wood Properties. Forests 2022, 13, 1659. https://doi.org/10.3390/f13101659
Yu X, Li F, Zhao Q, Wang J, Liu Y, Yi F, Guo X, Zhang P, Ma W. Primary Selection of Excellent Catalpa fargesii Clones Based on Growth and Wood Properties. Forests. 2022; 13(10):1659. https://doi.org/10.3390/f13101659
Chicago/Turabian StyleYu, Xiaochi, Feng Li, Qiuling Zhao, Junhui Wang, Ying Liu, Fei Yi, Xiaolong Guo, Peng Zhang, and Wenjun Ma. 2022. "Primary Selection of Excellent Catalpa fargesii Clones Based on Growth and Wood Properties" Forests 13, no. 10: 1659. https://doi.org/10.3390/f13101659
APA StyleYu, X., Li, F., Zhao, Q., Wang, J., Liu, Y., Yi, F., Guo, X., Zhang, P., & Ma, W. (2022). Primary Selection of Excellent Catalpa fargesii Clones Based on Growth and Wood Properties. Forests, 13(10), 1659. https://doi.org/10.3390/f13101659