摘要
对3种暖季型草坪草假俭草(Eremochloa ophiuroides)、结缕草(Zoysia sinica)和沟叶结缕草(Zoysiamatrella)在土壤盐分胁迫下的一些生理指标的变化进行了初步研究。结果表明,在草坪草适应范围之内,根系活力和蛋白质含量呈先升后降的趋势,如超过忍受范围则持续下降;随盐分胁迫强度的增加和胁迫时间的延长,草坪草叶片的WSD上升,脯氮酸含量均表现为先升后降的趋势,但因胁迫程度和草种的不同,其峰值和下降幅度有较大差异。各项生理指标变化的趋势因草种的不同而有较大的差异,与其耐盐性有关,可以作为判定草坪草抗盐能力的评定依据。
Root activities and some other physiological responses in three warm-season turfgrasses under the soil salt stress were studied in this article. When the salt stress was in the range of the three turfgrasses could tolerate, its root activity and the protein increased in early phase of stress and decreased in later phase of stress, but trended to decrease continually while the tolerance of salt stress exceeded its threshold. With the salt stress enhanced and prolonged, WSD （water saturation deficit） would increased in the leaves of the turfgrass, the Pro （proline） content trended to increase in early phase of stress while decreased in later phase, but its peak and declining extent differed among three grasses. The changing trend of physiological response differed from different grasses, and this physiological response was related to salt tolerance of turfgrasses and could be used to estimated the salt tolerance of three turf grasses.
出处
《安徽农业大学学报》
CAS
CSCD
北大核心
2010年第4期720-725,共6页
Journal of Anhui Agricultural University
基金
镇江市科技计划项目(NY2007045)资助
关键词
土壤盐分胁迫
暖季型草坪草
生理响应
soil salt stress
warm-season turfgrasses
physiological response
