外源多胺处理对匍匐翦股颖组培苗根系的影响  

Effects of exogenous polyamines on root system of creeping bentgrass

作　　者：戚甫友[1] 赵钢[2] 

机构地区：[1]仲恺农业工程学院园艺园林学院,广东广州510225 [2]仲恺农业工程学院生命科学学院,广东广州510225

出　　处：《仲恺农业工程学院学报》2010年第3期27-30,39,共5页Journal of Zhongkai University of Agriculture and Engineering

摘　　要：以匍匐翦股颖(Agrostis stolonifera)分蘖节为外植体,分别接种在含有1、5、10、15和20 mg/L等不同质量浓度的精胺(Spermine,Spm)、亚精胺(Spermidine,Spd)、腐胺(Putreseine,Put)等3种不同外源多胺的培养基中,30 d后比较不同处理下草坪草根系的生长状况.结果表明,Spm、Spd和Put都可以促进根系的生长发育,但外源多胺对草坪草根系的影响不同,因多胺种类、质量浓度和草坪草的品种而异;低质量浓度的多胺可以促进根系生长,当浓度超过草坪草的耐受范围时,就会产生抑制作用.The tillers of creeping bentgrass were cultured in the nutrient agar medium supplemented with different concentrations（1 mg/L,5 mg/L,10 mg/L,15 mg/L and 20 mg/L）of exogenous polyamines（spermine,spermdine and putrescine）.After 30 days,the status of the root growth and development of the turfgrasses was examined and the optimun concentrations of exogenous polyamines was seleted.The results showed that three kinds of exogenous polyamines could promote the growth and development of roots,and that different polyamines and different concentrations of them had different effect on the growth of turfgrasses.Low concentrations of polyamines could promote root growth but had an inhibition when the concentration exceeded the range of turfgrass tolerance.

关 键 词：外源多胺 根系 匍匐翦股颖(Agrostis stolonifera) 

分 类 号：Q945.45[生物学—植物学]