摘要
以不同杉木闽楠复层林经营模式(TN40 处理和TN60 处理)中的闽楠叶片为研究材料,探讨不同处理对闽楠阴生叶、阳生叶的表型性状、解剖结构及气孔形态的影响.结果表明:从同一光环境不同叶型来看,TN40 处理的闽楠阳生叶的叶片厚度、比叶重、栅栏组织厚度、中脉厚度较阴生叶分别增加了 13.77％、9.86％、7.49％、11.79％,差异达显著水平(P<0.05);TN60 处理的闽楠阳生叶的叶片厚度、叶组织密度、比叶重、气孔密度较阴生叶分别增加了 6.32％、9.46％、8.70％、6.42％,差异达显著水平(P<0.05).从同一叶型不同光环境来看,闽楠阳生叶在TN40 处理下叶干物质含量、比叶重、开放科学标识码(OSID码)上表皮厚度、栅栏组织厚度、海绵组织厚度、中脉厚度、气孔密度较TN60 处理分别提高了 6.13％、4.00％、11.62％、12.17％、15.22％、8.80％、9.00％,而叶片含水率、叶组织密度则分别降低了 5.04％、3.97％,差异均达到显著水平(P<0.05);闽楠阴生叶在 TN40 处理下叶面积、叶干物质含量、气孔密度较 TN60 处理分别增加了 5.52％、5.50％、11.25％,差异均达显著水平(P<0.05).从闽楠叶片形态适应特征来看,TN40 处理更适合闽楠的培育.
Abstract
The leaves of Phoebe bournei under different management modes(TN40 and TN60 treatments)of Chinese fir and P.bournei multi-layer forest were used as research materials to investigate the effects of different treatments on the phenotypic traits,anatomical structure,and stomatal morphology of shade and sun leaves of P.bournei.Our findings demonstrated that from the perspective of different leaf types in the same light environment,the leaf thickness,specific leaf weight,palisade tissue,and midrib thickness of the sun-grown leaves of P.bournei under TN40 treatment significantly(P<0.05)increased by 13.77％,9.86％,7.49％,and 11.79％,respectively compared with those of shaded leaves.The leaf thickness,leaf tissue density,specific leaf weight,and stomatal density of the sun leaves of P.bournei under TN60 treatment significantly(P<0.05)increased by 6.32％,9.46％,8.70％,and 6.42％,respectively compared with those of shade leaves.From the perspective of different light environments for the same leaf type,the leaf dry matter content,specific leaf weight,upper epidermis thickness,palisade tissue thickness,sponge tissue thickness,midrib thickness,and stomatal density of the sun-growing leaves of P.bournei under TN40 treatment were 6.13％,4.00％,11.62％,12.17％,15.22％,8.80％,and 9.00％significantly(P<0.05)higher than those under TN60 treatment,respectively;however,the leaf water content and tissue density significantly(P<0.05)decreased by 5.04％and 3.97％,respectively.The leaf area,leaf dry matter content,and stomatal density of the shaded leaves of P.bournei under TN40 treatment were 5.52％,5.50％,and 11.25％significantly(P<0.05)higher than those under TN60 treatment,respectively.Therefore,the morphological adaptation characteristics of P.bournei leaves under TN40 treatment is more suitable for the cultivation of P.bournei.
基金项目
国家重点研发计划项目子课题(2021YFD220130-05)
维普
万方数据