摘要
采用酸性品红染色法对贵州不同地域分布的桃叶杜鹃根系染色压片,对其菌根进行显微结构及菌根侵染情况观察。结果表明,野生桃叶杜鹃菌根结构复杂,根外被密集的菌丝包被形成菌丝鞘,无根毛,在菌根中具有杜鹃花类菌根特有典型结构菌丝结,也有穿梭于细胞间的有隔菌丝和束状菌丝等结构。野生植株菌根侵染指标较高;不同地域的菌根侵染指标差异显著,贵阳鹿冲关成年开花植株高于百里杜鹃方家坪成年开花植株;不同季节侵染指标两地春季高于夏季。分布于百里杜鹃的开花成年树侵染指标明显低于幼树。播种苗侵染指标较低,2a播种苗侵染指标较1a呈上升趋势。
By using the acid fuchsin staining, the roots of Rhododendron annae Franch were dyed and squashed, which grows in Guizhou province, and the microstructure and mycorrhizal colonization were observed. The results show that the lateral roots of ferine R. annae have complex structure, were enwrap by dense hypase to form hyphal sheath on the outside of the roots and there was no root hair; There were intracellular hyphal knots which are the unique and typical structure of ericoid mycorrhiza, there also were a few septate hypha and fasciculate hyphae structure. Wild plant infection index was higher, the indexes differences of the infected roots in different regions were remarkable, the indexes of Luchonghuang mycorrhiza of adult flowering plant were higher than Fangjiaping＇s; In different seasons, the rates in spring were higher than that in summer; The indexes of flowering adult tree were obviously less than that young tree. Sowing seedlings＇ index was lower. The infection indexes of 2-year-old sowing seedlings showed a rising trend compared with that of 1-year-old.
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2012年第11期28-33,共6页
Journal of Central South University of Forestry & Technology
基金
贵州省农业科技攻关项目(黔科合NY字[2011]3076号)
关键词
桃叶杜鹃菌根
杜鹃花类菌根
显微结构
侵染指标
Rhododendron annae mycorrhiza
ericoid mycorrhiza
microstructure
infection index
