9个匍匐翦股颖品种成熟期耐盐性比较  

Salinity effects on 9 creeping bentgrass cultivars at the mature stage

作　　者：王胜[1,2] 常智慧[1] 韩烈保[1] 

机构地区：[1]北京林业大学草坪研究所,北京100083 [2]重庆市风景园林科学研究院重庆市城市园林绿化工程技术研究中心,重庆401329

出　　处：《草业科学》2013年第6期836-843,共8页Pratacultural Science

基　　金：国家林业局林业科学技术推广项目([2011]31);重庆市科技计划项目(cstc2011pt-gc80019)

摘　　要：本研究采用水培系统培养,设5个盐质量浓度梯度(0、5、10、15和20g.L-1 NaCl),对比了9个匍匐翦股颖(Agrostis stolonifera)品种的草坪地上生长量(CY),叶片含水量(LWC),叶绿素含量(Chl)和根系生长量(RM)等指标,比较了各品种在成熟期的耐盐性。结果显示,盐处理对各品种的CY、LWC、Chl和RM都有明显抑制作用,且抑制作用随盐质量浓度的增加而加强。草坪地上生长量和根系生长量在10g.L-1 NaCl溶液培养条件下呈先升后降的趋势。在所有品种中,Alpha在成熟期的耐盐性最强,Kingpin耐盐性最弱,其他几个代表品种耐盐性居于两者之间。A hydroponic system was used to compare the salinity tolerance of 9 creeping bentgrass （Agros- tis stolonifera）cultivars at the mature stage. Salinity levels were set as 0, 5, 10, 15 and 20 g·L-1 NaCl. Turfgrass clippings yield （CY）, leaf water content （LWC）, chlorophyll content （Chl） and root mass （RM） were measured to compare the relative salinity tolerance of these cultivars. The results showed that salinity had detrimental effects on all indexes. However, CY and RM increased at the lower NaCl concen- tration solutes before day 22 and then decreased. Among all cultivars, Alpha was the most tolerant culti- var, Kingpin was the most sensitive one, and other cultivars were moderate tolerant culthvates. The results indicate that there is substantial variation in salinity tolerance among these cultivars.

关 键 词：NACL 地上生长量 根系生长量 水培 

分 类 号：S688.4[农业科学—观赏园艺]