文献类型：期刊文献

中文题名：不同种源文冠果叶片气孔分布特征对水分胁迫的响应

英文题名：Influence of Water Stress on Leaves Stomatal Distribution Characteristics of Yellow Horn (Xanthoceras sorbifolium)

作者：胡潇予[1] 于海燕[1] 崔艺凡[1] 范思琪[1] 毕泉鑫[1] 李迎超[1] 王利兵[1]

第一作者：胡潇予

机构：[1]中国林业科学研究院林业研究所国家林业和草原局林木培育重点实验室

年份：2019

卷号：32

期号：1

起止页码：169-174

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：引进国际先进林业科学技术项目(2014-4-56);国家重点研发计划(2016YFC050080506)

语种：中文

中文关键词：文冠果;种源;水分胁迫;气孔分布特征

外文关键词：Yellow horn;provenance;water stress;stomatal distribution characteristics

分类号：S759.3;S718.43

摘要：[目的]探究不同种源文冠果叶片气孔分布特征对水分胁迫的响应,了解其耐旱性差异,为节水耐旱文冠果种源的选择提供依据。[方法]以集中分布在华北地区的3个不同种源文冠果幼苗为研究对象,通过盆栽控水方法设置充足水分(W1)、正常供水(W2)、轻度干旱(W3)和重度干旱(W4)4个水分梯度,采用指甲油印迹技术,研究不同种源文冠果叶片气孔分布特征对水分胁迫的响应。[结果]表明:不同种源文冠果的气孔均分布在叶片的下表皮,随着干旱胁迫程度的加剧,气孔变得小而多,趋于旱生植物的叶片气孔分布结构特征;气孔分布特征对水分胁迫的响应存在显著的差异性,与河南三门峡、山西晋中两个种源相比,河北承德种源叶片在不同水分胁迫处理下均具有小而多的气孔,以及较强的气孔调节能力。[结论] 3个种源文冠果叶片气孔分布特征均存在着不同程度的趋于旱生结构;河北承德种源文冠果叶片气孔器比其他2个种源均相对小而多,且调节能力强,属华北地区抗旱优良种源。
[Objective] By means of exploring the response of stomatal distribution characteristics of different Yellow horn ( Xanthoceras sorbifolium Bunge) provenances to water stress, to understand the difference in drought tolerance, and provide references for the selection of water-saving and drought-tolerant provenances.[Method] The seedlings of 3 yellow horn provenances distributed in North China were studied, and 4 water gradients including sufficient water, normal water supply, mild drought and severe drought were set by potted water control method. The stomatal distribution characteristics of the plant leaf were observed with fingernail oil imprinting technique.[Result] The results show that the stomata of different provenances are distributed on the lower epidermis of yellow horn leaves. With the intensification of drought stress, the stomata become smaller and increase in number. And the stomata have a tendency to possess the stomatal distribution characteristics of xerophyte leaves. There are significant differences in the response of stomatal distribution to water stress among the 3 provenances. Compared with two provenances from Sanmenxia of Henan Province and Jinzhong of Shanxi Province, the leaves of provenance in Chengde of Hebei Province have smaller stomata, more stomata and stronger stomatal regulation ability under different water stress treatments.[Conclusion] The stomatal distribution characteristics of yellow horn leaves of three provenances all have different degrees of xerophytic structure. The leaves of provenance in Chengde have smaller and more stomata than the other two provenances, and have strong regulating ability, which is the excellent drought-resistant provenance of North China.