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本研究选取分布在我国东部地区的15个柳杉(Cryptomeria)优良无性系,以2年生的扦插苗开展耐盐性试验。通过盐胁迫处理,观测了柳杉不同无性系在盐胁迫后植株的形态状况和生理指标变化,及分析柳杉无性系间的耐盐性差异。根据综合盐害指数(SI)、每个无性系的耐最高土壤盐浓度以及生理指标的隶属函数值,得出这15个柳杉无性系的耐盐性能力差异排名为:57#>68#>11#>011#>66#>70#>54#>8#>52#>25#>74#>7#>59#>65#>3#。通过此项研究,可筛选出适宜沿海山地种植的耐盐性较强的柳杉无性系,为今后的分子标记辅助育种的实验提供理论依据。
In this study, 15 elite clones of Cryptomeria distributed in the eastern part of China were selected to study the salt tolerance of 2-year-old cutting seedlings. Through the salt stress treatment, the morphological and physiological changes of Cryptomeria fortunei clones under salt stress were observed, and the differences of salt tolerance between Cryptomeria fortunei clones were analyzed. The rank order of salt tolerance of these 15 Cryptomeria fortunei clones was 57 #> 68 # according to the comprehensive salt index (SI), the highest soil salt concentration resistance of each clones and the membership functions of physiological indices. Gt; # 11 # & gt; 011 & gt; # 66 & gt; # 70 & gt; # 54 & gt; # 8 # & gt; Through this study, we can screen out the suitable salt-tolerant Cryptomeria fortunei clones suitable for planting in the coastal area, and provide the theoretical basis for the future experiments of molecular marker-assisted breeding.