摘要
通过对露地栽培自然降温下4个狗牙根(Cynodon dactylon)品种(系)(‘矮败狗牙根’、‘公主’、‘天堂419'’和‘HN019’)的电导率、丙二醛含量、脯氨酸含量、可溶性糖含量、可溶性蛋白含量、叶绿素含量和超氧化物歧化酶活性7个生理指标的测定,结合模糊隶属函数法,综合评价这4个狗牙根品种(系)的耐寒性。结果表明,在露地栽培自然降温过程中4个狗牙根品种(系)的各生理指标均对降温作出了反应。随着温度的降低,电导率和丙二醛含量总体呈增高趋势,脯氨酸含量、超氧化物歧化酶活性和可溶性糖含量呈先增高后降低的趋势,可溶性蛋白含量变化呈现出先迅速升高后迅速下降再缓慢升高的趋势,叶绿素含量总体呈降低趋势。综合各生理指标的变化,用模糊隶属函数法综合评价出4个狗牙根品种(系)的耐寒性强弱顺序为‘矮败狗牙根’>‘公主’>‘天堂419’>‘HN019’。
The electrical conductivity,MDA content,proline,soluble sugar,soluble protein content,chlorophyll content and SOD of four bermudagrass varieties（lines） under the natural cooling process were measured,and fuzzy membership function method was used to evaluate the cold resistance of the four bermudagrass cultivars（lines）.The results showed that all the physiological indicators of four bermudagrass cultivars（lines） have responded to low temperature under the natural cooling process.Electrical conductivity and MDA content with decreasing temperature showed a general increasing trend,proline content,SOD and soluble sugar content activity increased first and then decreased as temperature decreasing,soluble protein content increased first in short order then decreased and increased by inches,chlorophyll decreased with the decreasing temperature in the overall,SOD activity increased with temperature decreasing at first and then decreased.Comprehensive results of the various physiological changes,with fuzzy membership function to evaluate the cold tolerance of four Bermudagrass cultivars（lines） in descending order： ＇Dwarf Abortion Bermudagrass＇＇Princess＇＇Tifway＇＇HN019＇.
出处
《草业科学》
CAS
CSCD
北大核心
2011年第3期404-409,共6页
Pratacultural Science
基金
国家"十一五"科技支撑计划项目:优质抗逆专用狗牙根新品种选育(2006BAD01A19-2-2)
关键词
自然降温
狗牙根
耐寒性
生理指标
natural cooling process
Bermudagrass
cold resistance
physiological indicators
