摘要
【目的】为了揭示毛竹(Phyllostachys edulis)及其2种变异类型厚竹(Ph.edulis‘Pachyloen’)、八字竹(Ph.edulis‘Bicanna’)叶的功能差异,及其与竹秆形态特征之间的关系。【方法】采用石蜡制片法结合显微技术观察叶片的解剖结构特性,构建其三维形态结构图,利用蒽酮比色法测定相关生理指标。观测各竹种竹秆的秆形因子变化规律,并进一步分析了叶结构与秆形特征之间的关系。【结果】毛竹叶面积、泡状面积、维管束面积更大,且具有更厚的下表皮、叶片、叶肉,其叶的结构更有利于光合作用;毛竹和厚竹叶的结构和秆形特征密切相关。【结论】毛竹叶片结构特征更有利于光合作用,积累更多物质用于竹秆生长,且毛竹和厚竹可通过改变叶片和秆形特征来权衡资源,从而维持自身正常生长。该文为进一步揭示竹子生长发育机制奠定基础,并为竹子新种质创制提供科学依据。
【Objective】In order to unveil the functional differences of leaves of Phyllostachys edulis and its two variants,Ph.edulis‘Pachyloen’and Ph.edulis‘Bicanna’,and their relationships with the morphological characteristics of bamboo culms.【Method】The study employed paraffin sectioning and microscopy techniques to investigate the morphological and anatomical features of leaves,thereby three-dimensional morphological structure diagram of the leaves were created and the physiological indexes were determined through anthrone colorimetry.The study also observed variations in culm shape factors among different bamboo species,followed by a detailed examination of the correlation between leaf structure and culm shape characteristics.【Result】The results of this study suggest that Ph.edulis has greater leaf area bulliform cell area,and vascular bundle area,along with thicker leaves,lower epidermis and mesophyll.These specific leaf structural characteristics of Ph.edulis exceed those observed in the other two bamboo species,which is more conductive to photosynthesis.The leaf structure and culm morphology of Ph.Edulis,and its variant type,Ph.edulis‘Pachyloen’,have a strong correlation.【Conclusion】The structural characteristics of Ph.edulis leaves are more conducive to photosynthesis and promote the accumulation of vital substances for the growth of bamboo culms.Both Ph.edulis and its variant,Ph.edulis‘Pachyloen’,can balance resource allocation by modifying the traits of leaf and culm so as to ensure consistent growth.This study establishes a foundation for further unveiling growth and development mechanism of bamboo,providing a scientific basis for generating novel bamboo germplasm.
作者
胡思思
孔令辉
肖姣
胡添翼
邓梦
杨光耀
于芬
HU Si-si;Kong Ling-hui;XIAO Jiao;HU Tian-yi;DENG Meng;YANG Guang-yao;YU Fen(Jiangxi Agricultural University,Nanchang 330045,Jiangxi,China;Jiangxi Provincial Key Laboratory for Bamboo Germplasm Resources and Utilization,Nanchang 330045,Jiangxi,China)
出处
《竹子学报》
2024年第1期1-10,共10页
Journal of Bamboo Research
基金
国家自然科学基金项目(31960336,31460177)。
关键词
毛竹
变异类型
叶
解剖结构
竹秆
Phyllostachys edulis
Variation types
Leaf
Anatomical characteristics
Bamboo culm
