北京林业大学学报2026，Vol.48Issue(6)：174-182,9.DOI:10.12171/j.1000-1522.20260007
染色体加倍对河北杨生长生理及材质性状的影响
Effects of chromosome doubling on growth,physiological traits and wood properties of Populus hopeiensis
摘要
Abstract
[Objective]To investigate the regulatory effects of chromosome doubling on growth,physiological traits,and wood properties of Populus hopeiensis,diploids and their autotetraploids were compared.[Method]Taking one-year-old diploids and their corresponding autotetraploids derived from different genotypes(BT1,BT3,BT8)as the research objects,we measured the plant height,basal ground diameter,internode length and leaf traits.Photosynthetic parameters such as net photosynthetic rate and transpiration rate were determined using a photosynthesis analyzer.The lignin and cellulose content of seedling stems were estimated via the two-step acid hydrolysis method combined with high-performance liquid chromatography and ultraviolet-visible spectroscopy.[Result](1)The plant height and basal ground diameter of the autotetraploids were lower than those of the diploids,while the internode length of the autotetraploids was higher than those of the diploids.The leaf length,leaf width,leaf area and leaf thickness of the autotetraploids were higher than those of the diploids,while the leaf length-width ratio of the autotetraploids was lower than that of the diploids.(2)The net photosynthetic rate of the autotetraploids was higher than that of their corresponding diploids,while the transpiration rate,stomatal conductance and intercellular CO2 concentration of the autotetraploids were lower than those of the diploids.(3)The lignin content of the autotetraploids was lower than that of their corresponding diploids,while the cellulose content of the autotetraploids was higher than that of the diploids.(4)Ploidy level had an extremely significant effect on the plant height,basal ground diameter,internode length,leaf length,leaf width,leaf length-width ratio,leaf area,leaf thickness,lignin content and cellulose content of one-year-old Populus hopeiensis seedlings(P<0.001).[Conclusion]Chromosome doubling has significant effects on the growth,physiological traits,and wood properties of the forest tree Populus hopeiensis.The results play an important role in the recognition of gene dosage effects on the development and timber formation.关键词
河北杨/染色体加倍/生长性状/生理性状/材质性状Key words
Populus hopeiensis/chromosome doubling/growth trait/physiological trait/wood property分类
农业科技引用本文复制引用
解云云,贺鹏,谷志善,张平冬..染色体加倍对河北杨生长生理及材质性状的影响[J].北京林业大学学报,2026,48(6):174-182,9.基金项目
国家重点研发计划(2021YFD220120503). （2021YFD220120503）
