LI Miao,ZHENG Guobao,ZHU Jinxia,et al.Effects of Salt Stress on Growth and Physiological Indexes of Taraxacum kok-saghyz Rodin[J].Northern Horticulture,2018,42(12):101-104.[doi:10.11937/bfyy.20174084]
盐胁迫对橡胶草生长及生理指标的影响
- Title:
- Effects of Salt Stress on Growth and Physiological Indexes of Taraxacum kok-saghyz Rodin
- 文献标志码:
- A
- 摘要:
- 以橡胶草为试验材料，对不同程度盐胁迫处理（0.2%、0.3%、0.4%、0.5%、0.6% NaCl）橡胶草生长及生理指标进行了比较分析，探讨橡胶草在盐胁迫条件下的生长发育特性。结果表明：橡胶草生长、发育对盐胁迫反应较为敏感，不同水平盐胁迫处理条件下，橡胶草植株形态、生理指标差异显著。橡胶草对盐胁迫的耐受极值为NaCl浓度0.5%，超过极值盐浓度，则橡胶草植株无法存活。橡胶草盐害程度与盐胁迫处理时间呈正相关，0.2%盐胁迫处理浓度是进行橡胶草苗期耐盐性鉴定和筛选的较适宜浓度。
- Abstract:
- The growth and physiological indexes of Taraxacum kok-saghyz Rodin under different salt stress treatment(0.2%,0.3%,0.4%,0.5%,0.6% NaCl) were analyzed,and the growth and development characteristics of Taraxacum kok-saghyz Rodin under salt stress were discussed.The results showed that the growth and development of Taraxacum kok-saghyz Rodin were sensitive to salt stress.Under different salt stress treatments,the morphological and physiological indexes of Taraxacum kok-saghyz Rodin plant were significantly different.The extremetolerance value of Taraxacum kok-saghyz Rodin to salt stress was 0.5% NaCl concentration and exceeded the extreme salt concentration,then the plant was unable to survive.The degree of salt damage of Taraxacum kok-saghyz Rodin was positively correlated with the time of salt stress treatment.0.2% salt stress was the optimum concentration for salt tolerance identification and screening.
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LI Miao,ZHENG Guobao,ZHU Jinxia,et al.Effects of Salt Stress on Growth and Physiological Indexes of Taraxacum kok-saghyz Rodin[J].Northern Horticulture,2018,42(12):101.[doi:10.11937/bfyy.20174084]
备注/Memo
第一作者简介：李苗（1982-），男，硕士，副研究员，现主要从事特色植物资源利用等研究工作。E-mail：limiao1228@sina.com.责任作者：张源沛（1968-），男，博士，研究员，研究方向为土壤学。E-mail：zhangypei@163.com.基金项目：国家国际科技合作资助项目（2014DFR31020）；宁夏回族自治区科技支撑计划资助项目（对外科技合作）。收稿日期：2018-02-24