林业科学研究2025，Vol.38Issue(1)：150-159,10.DOI:10.12403/j.1001-1498.20240020
杉木不同组织/器官非结构性碳水化合物季节变化特征及其对修枝的响应
Seasonal Variation of Non-structural Carbohydrate in Different Tissues/Organs of Chinese Fir and Its Response to Pruning
摘要
Abstract
[Objective]Analyzing the seasonal dynamics of non-structural carbohydrate(NSC)in different tissues/organs of Chinese fir and its response to pruning can provide insights into the physiological charac-teristics and growth mechanisms of the species,as well as offer a scientific basis for determining optimal pruning intensity in plantations.[Method]In a Chinese fir plantation,we compared the contents of NSC and their components across varioud tissues/organs of Chinese fir,and analyzed the seasonal dynamics of NSC and its components in various tissues/organs of Chinese fir after 10 years of pruning.[Results]The results showed that there were significant differences in the contents of NSC and its components among different tissues/organs of Chinese fir.Soluble sugars and total NSC contents in needles were the highest,reaching an average of 100.66±2.74 mg·g-1 and 153.28±3.51 mg·g-1,respectively,which were significantly affected by needle age(p<0.001).The starch content was highest in the coarse root(69.09±5.26 mg·g-1),which was 34.13%higher than in the fine roots.The NSC contents in various tissues and or-gans did not respond to pruning but exhibited significant seasonal variations.The seasonal fluctuations in NSC and its components were greatest in the needles,which decreased at the beginning of spring and continued to accumulate through summer into the following year.In January,the soluble sugar and NSC content in needles were 95.57%and 57.61%higher,respectively,compared to the lowest values in June.In contrast,the seasonal fluctuations of NSC and its components in the xylem were smaller,with NSC con-tent ranging from 53.42 to 90.50 mg·g-1.[Conclusion]This study shows significant temporal variation in the contents of NSC and its components in the tissues and organs of Chinese fir.Furthermore,the effects of pruning on NSC content seem to diminish over time.关键词
非结构性碳/季节动态/修枝/杉木Key words
non-structural carbohydrate/seasonal dynamics/pruning/Chinese fir分类
农业科技引用本文复制引用
植可翔,关欣,黄苛,杨佳敏,张伟东,杨庆朋..杉木不同组织/器官非结构性碳水化合物季节变化特征及其对修枝的响应[J].林业科学研究,2025,38(1):150-159,10.基金项目
"十四五"国家重点研发计划项目(2022YFF1303003 （）
2021YFD2201302) （）
