本研究以农桑12号、昂绿1号、湖桑32号、鲁插1号、昌盛、桂桑优12号6个桑树(Morus alba L.)品种一年生嫁接苗为材料。研究它们对盐胁迫的生理生化反应,以了解它们的耐盐机制。采用完全随机区组试验,分对照0%(CK)、0.2%、0.3%、0.4%、4个不同含盐量土壤梯度水平,每7天测定一次。6月12日、6月19日、6月26日、7月3日和7月10日对胁迫症状、细胞膜透性、MDA、脯氨酸、可溶性糖、可溶性蛋白、SOD、叶绿素等指标进行了测定,破坏取样后对Na~+、K~+、Cl~-离子含量和根系活力进行了测定。并运用多重比较、相关分析、模糊数学隶属函数等数学方法进行综合评价了6个品种的抗盐能力大小。研究桑树各品种在盐胁迫下的反应特性并初步探讨木本植物的抗盐机理。
为得到试验所需4个盐梯度的土壤含盐量,先进行土壤含盐量配制预试验。土壤含盐量预试验测定得到:0.3%的盐水灌溉土壤可得到0.206%的土壤含盐量;0.45%的盐水灌溉土壤可得到0.318%的土壤含盐量;0.7%的盐水灌溉土壤可得到0.416%的土壤含盐量。为了确保试验的持续性,每天直接用湿土粗略测定含盐量,通过试验说明测定结果和自然风干...
【英文摘要】
In this study, The one-year-old seedlings of six clonal varieties of Morus alba L.were tested to study their responses to salt stress. In order to understand their salt tolerance mechanisms, their physiological and biochemical responses to salt stress were studied. As randomized complete block experiment was designed, 0% (CK), 0.2%, 0.3%, 0.4% four different gradients of soil salinity levels were prepared and the measurants were made on June 12, June 19, June 26, July 3 and July 10. The samples were taken t...
| 
点击下列相关研究机构和相关文献作者，可以直接查到这些机构和作者被《中国知识资源总库》收录的其它文献，使您全面了解该机构和该作者的研究动态和历史。
