10份沿阶草种质资源不同遮阴处理对叶片解剖结构的影响研究

leaves of 10 germplasm resources of Lepidoptera japonicum

试验以不同地区的10种沿阶草种质资源为研究对象,通过不同的遮阴程度处理,研究遮阴对叶片解剖结构指标的影响,采用隶属函数方法比较了种质材料间的耐阴性差异,筛选出了适合成都地区种植的耐阴性较好的沿阶草资源材料。结果如下:随着遮阴程度的加强,试验材料的栅栏组织会随着遮阴时间的增加而减少,其海绵组织会随着时间的增加而增加,下表皮厚度也会随着时间的增加逐渐变厚,叶片厚度变化与不同品种有关;采用隶属函数分析,试验材料的耐阴性排序是:SAG-BJ-19006>SAG-SY-19005>SAG-OJ-19004>SAG-DT-19009>SAG-OJ-19002=SAG-OJ-19003>SAG-LM-19001>SAG-DZ-19007>SAG-BQ-19010>SAG-XJ-19008;结合隶属函数以及田间试验,本研究初步筛选出了适宜在成都地区栽培的耐阴型沿阶草3份,分别为SAG-OJ-19004(山麦冬)、SAG-SY-19005(细叶麦冬)、SAG-BJ-19006(中叶麦冬)。

The effects of shade on leaf anatomical structure index of 10 germplasm resources of Lepidoptera Japonicum from different regions were studied through different shade degree of processing,and suitable materials with better shade tolerance for planting in Chengdu region were selected using the membership function method.The results were as follows:With the increase of shading degree,the palisade tissue decreased with the increase of shading time,the sponge tissue increased with the increase of shading time,and the thickness of the lower epidermis gradually became thicker with the increase of shading time.The change of leaf thickness was related to different varieties.Using membership function analysis,the order of shade tolerance of test materials is:SAG-BJ-19006>SAG-SY-19005>SAG-OJ-19004>SAG-DT-19009>SAG-OJ-19002=SAG-OJ-19003>SAG-LM-19001>SAG-DZ-19007>SAG-BQ-19010>SAG-XJ-19008;Based on the membership function and field experiment,three shade tolerant plants were selected as sag-OJ-19004,SAG-SY-19005 and SAG-BJ-19006,which were suitable for cultivation in Chengdu area.