料慈竹秆形性状变化规律  

Variation Pattern of Bambusa distegia Culm Form Characters

作　　者：孔梦瑶 雷波 马光良 李琳 王鑫 刘祥东 张丽[1] Kong Mengyao;Lei Bo;Ma Guangliang;Li Lin;Wang Xin;Liu Xiangdong;Zhang Li(Sichuan Academy of Forestry,Chengdu 610081,China;Agriculture and Rural Development Service Center,Xijiashan Town,Jiangan.644211,Sichuan,China;Luzhou Academy of Forestry,Luzhou 646000,Sichuan,China)

机构地区：[1]四川省林业科学研究院,成都610081 [2]江安县夕佳山镇农业农村发展服务中心,四川江安644211 [3]泸州市林业科学研究院,四川泸州646000

出　　处：《世界竹藤通讯》2024年第5期70-77,共8页World Bamboo and Rattan

基　　金：四川省科技计划项目(2021YFZ0006);四川省基本科研项目(2022JBKY16)。

摘　　要：料慈竹因竹材质量好、节间长而备受关注。秆形性状是影响竹材利用效率的关键因素。为探明料慈竹秆形性状与竹丛性状的关系,在四川省江安县、叙永县的料慈竹纯林中共设置12个样地,测量样竹的竹节数、节长、节中径、壁厚等性状。经曲线拟合和相关性分析,得出料慈竹秆形性状变化规律。结果表明:(1)料慈竹竹节数量大多为21~29节,最长节可达128 cm,平均为94.42 cm;(2)最长节相对位置在秆高0.36~0.58处,平均值是0.47,大部分样地间无显著性差异;(3)随着竹节相对高的升高,料慈竹节长表现为“短—长—短”对称抛物线的分布特征;竹节壁厚递减,呈显著负相关关系;(4)竹节体积占整株体积的比例由下往上呈“少—多—少—极少”的抛物线分布特征;(5)样地间最长节体积差异与竹丛性状差异趋势一致。基于料慈竹的节长和竹节体积在立竹中的占比均表现出抛物线的分布规律,具有一定对称性,料慈竹的最长节指标可作为优良品种选育的判断因子。Bambusa distegia is known for its high quality bamboo and long internode length.The characters of its culm form are the key factor affecting the utilization efficiency of bamboo.In order to investigate the relationship between B.distegia culm form characters and bamboo cluster characters.A total of 12 plots are set up in pure B.distegia forest in Jiangan county and Xuyong county,Sichuan province,to measure the number of bamboo nodes,the length of nodes,node central diameter,and wall thickness.By using curve fitting and correlation analysis,the variation pattern of B.distegia culm form characters are obtained.The results show that:(1)The number of B.distegia bamboo nodes are mostly between 21 and 29 while the longest node reaches 128 cm,and the average length is 94.42 cm;(2)The relative height of the longest node is between 0.36 and 0.58 comparing to the whole bamboo culm,and the average is 0.47.There is no significant difference among a majority of plots;(3)As the relative height increases,the node length of B.distegia shows the distribution pattern of“short—long—short”in the form of symmetric parabola,and the wall thickness of bamboo node decreases,showing a significant negative correlation;(4)The proportion of the volume of bamboo node to the volume of the whole culm show“less—more—less—very little”pattern from the bottom to the top in the form of parabola;and (5)The longest node volume of bamboo among plots tends to be consistent with the bamboo cluster characters.The ratio of node length and volume to the whole culm shows the pattern of parabolic distribution,presenting a certain degree of symmetry.The index of the longest node of B.distegia can be used as a judgment factor to the selective breeding of improved varieties.

关 键 词：料慈竹 秆形性状 竹节 良种选育 

分 类 号：S795.5[农业科学—林木遗传育种]