Phenotypic and Growth Stage Development Data of a Quercus robur Mycorrhization Experiment

In this experiment, we investigated the inoculation-effects of two ectomycorrhizal fungi (EMF) species with contrasting evolutionary histories, ecological properties, host-preferences, and habitat-ranges on phenotypic responses and growth dynamics of pedunculate oak (*Quercus robur*), an ecologically and economically important temperate forest tree species.
We set up the mycorrhization experiment using 96 plants of a genetically uniform *Q. robur* clone (DF159) and applied four treatments: A control treatment; an inoculation-treatment with the cosmopolitan Ascomycete *Cenococcum geophilum*, which is commonly found in oak forests; an inoculation-treatment with the Basidiomycete *Piloderma croceum*, which has not yet been found in natural oak forests but has been shown in previous experiments to support oak growth; and a co-inoculation treatment. We then assessed growth stage development of the trees over eight experimental weeks and measured various phenotypic traits during a destructive sampling.

本实验旨在探究两种演化历史、生态特性、宿主偏好及栖息地范围均存在显著差异的外生菌根真菌（ectomycorrhizal fungi, EMF），对兼具生态与经济价值的温带林木夏栎（*Quercus robur*）的表型响应与生长动态的接种效应。
本研究采用遗传均一的夏栎无性系（DF159）共96株植株开展菌根化实验，设置4组处理：空白对照组；接种广布子囊菌土生空团菌（*Cenococcum geophilum*）的处理组——该真菌常见于栎林生境；接种担子菌淡黄绒盖菌（*Piloderma croceum*）的处理组——该真菌目前尚未在天然栎林中被发现，但既往实验已证实其可促进栎树生长；以及复合接种处理组。随后我们在为期8周的实验周期内持续评估树木的生长阶段发育情况，并通过破坏性采样测定了多项表型性状。