南京林业大学学报（自然科学版）2016，Vol.40Issue(2)：121-126,6.DOI:10.3969/j.issn.1000-2006.2016.02.020
外源GA3对毛竹实生苗新分蘖竹株秆形与竹材纤维质量的影响
Effects of exogenous GA3 on culm form and culm fiber quality of Phyllostachys edulis seedlings neonatal tiller
摘要
Abstract
In order to study the growth mechanism of bamboo culm, and explore the methods of regulating bamboo fiber quality, different mass concentration (0, 20, 40, 60 mg/L) of gibberellin (GA3) were sprayed on moso bamboo seed⁃lings, and the neonatal tiller number, culm form and fiber quality were measured after treatments. Results showed that the culm height, internode length and leaf number of neonatal tillers increased significantly, the culm height of neonatal tiller under 20, 40 and 60 mg/L GA3 treatments were 0�56, 1.19 and 1.21 times higher respectively than that under the control (0 mg/L). The mean internode length increased 0.49, 1.05 and 1.10 times, and the number of leaves increased 35.61%, 48.35% and 38.68%, respectively. Nevertheless, no significant difference was presented among treatments on the neonatal tiller number, node number and the ground diameter. With the changes of culm form, the fiber quality of neonatal tiller also varied. The length of fiber cell under the 20, 40 and 60 mg/L GA3 treatments all had been increased significantly, 13.17%,20.68% and 31.46% longer than that under the control, respectively. However, the effects of each treatment on fiber cell width were not obvious, resulting in increasing of the fiber aspect ratio which is conducive to the fi⁃ber quality improvement. Besides, the effects of GA3 treatment on fiber cell wall thickness, lumen diameter and fiber tissue proportion were not obvious. Research showed that the use of GA3 could significantly improve the fiber quality of moso bam⁃ boo seedlings neonatal tiller, but couldn’ t significantly improve fiber production.关键词
毛竹实生苗/GA3/秆形/竹材纤维质量Key words
moso bamboo seedling/GA3/culm form/culm fiber quality分类
农业科技引用本文复制引用
江雪,楼崇,袁娜,岳晋军,顾小平..外源GA3对毛竹实生苗新分蘖竹株秆形与竹材纤维质量的影响[J].南京林业大学学报（自然科学版）,2016,40(2):121-126,6.基金项目
“十二五”国家科技支撑计划 （）
