假俭草抗寒性与体内碳水化合物、脯氨酸、可溶性蛋白含量的关系

doi:10.11733/j.issn.1007-0435.2010.06.012

›› 2010, Vol. 18 ›› Issue (6): 816-822.DOI: 10.11733/j.issn.1007-0435.2010.06.012

假俭草抗寒性与体内碳水化合物、脯氨酸、可溶性蛋白含量的关系

王丹¹, 宣继萍¹, 朱小晨², 文民操², 郭海林¹, 刘建秀¹

1. 江苏省中国科学院植物研究所(中山植物园), 江苏, 南京, 210014;
2. 南京农业大学, 江苏, 南京, 210095

收稿日期:2010-06-11 修回日期:2010-09-09 出版日期:2010-12-15 发布日期:2010-12-15
通讯作者: 刘建秀,E-mail:turfunit@yahoo.com.cn
作者简介:王丹(1982- ),女,内蒙古海拉尔人,硕士,研究方向为草坪草抗寒性研究,E-mail:wangdanjs2009@yahoo.cn
基金资助:
国家自然科学基金项目(30571307);江苏省科技厅平台项目(BM2009905)资助

Relationships of Freezing Tolerance and the Contents of Carbohydrates,Proline,Protein in Centipedegrass(Eremochloa ophiuroides(Munro.) Hack.)

WANG Dan¹, XUAN Ji-ping¹, ZHU Xiao-chen², WEN Ming-chao², GUO Hai-lin¹, LIU Jian-xiu¹

1. Institute of Botany, Jiangsu Province & Chinese Academy of Sciences, Nanjing, Jiangsu Province 210014 China;
2 Nanjing Agricultural University, Nanjing, Jiangsu Province 210014, China

Received:2010-06-11 Revised:2010-09-09 Online:2010-12-15 Published:2010-12-15

摘要/Abstract

摘要： 为了阐述假俭草(Eremochloa ophiuroides(Munro.)Hack.)的抗寒性与碳水化合物、脯氨酸、可溶性蛋白含量季节动态变化之间的关系,于2008年10月-2009年5月,研究了在自然温度变化过程中,假俭草E126匍匐茎中碳水化合物、脯氨酸、可溶性蛋白的季节性动态变化及其与半致死温度(LT₅₀)变化的关系。结果表明:在越冬前后假俭草E126匍匐茎LT₅₀呈现先降低后升高的季节变化趋势,可溶性总糖、蔗糖、果糖含量,可溶性总糖淀粉比率以及脯氨酸含量伴随田间气温变化均呈现先升高后降低的趋势,可溶性蛋白、淀粉含量则呈现出先降低又升高的趋势。假俭草E126匍匐茎LT₅₀季节变化与可溶性总糖、蔗糖、果糖含量,可溶性总糖淀粉比率季节变化之间存在极显著负相关(P<0.01),而与淀粉含量、脯氨酸含量、可溶性蛋白含量的季节变化间相关性不显著。因此,可溶性总糖含量、蔗糖含量、果糖含量、可溶性总糖淀粉比率对其冬季抗寒性增强有重要作用。

关键词: 假俭草, 碳水化合物, 脯氨酸含量, 可溶性蛋白含量, 抗寒性, 季节动态变化

Abstract: In order to clarify the changes in the contents of carbohydrates,proline,soluble protein and their relationships to freezing tolerance of centipedegrass,this research was performed at monthly intervals under naturally cold acclimation from October,2008 to May,2009.The relationships of carbohydrate(total soluble sugars,sucrose,glucose,starch),proline and soluble protein concentrations with LT₅₀(the lethal temperature killing 50% of the plants)of stolons of Eremochloa ophiuroides ’E126’ were investigated.Results indicated that the contents of carbohydrates,proline,soluble protein and LT₅₀ had a clear seasonal trend in rhizomes of two warm-season turf-grasses which increased or decreased sharply as temperature dropped in overwintering and decreased or increased gradually along with the rise in temperature in spring.Correlation analysis revealed that freezing tolerance of stolons of Eremochloa ophiuroides ’E126’ significantly and positively correlated with the contents of soluble sugars,sucrose,glucose and the ratio of the soluble sugars to starch and was not positively correlated with the contents of proline and soluble protein.

Key words: Eremochloa ophiuroides ’E126’, The contents of carbohydrates, The contents of proline, The contents of soluble protein, Freezing tolerance, Seasonal dynamic changes

中图分类号:

王丹, 宣继萍, 朱小晨, 文民操, 郭海林, 刘建秀. 假俭草抗寒性与体内碳水化合物、脯氨酸、可溶性蛋白含量的关系[J]. , 2010, 18(6): 816-822.

WANG Dan, XUAN Ji-ping, ZHU Xiao-chen, WEN Ming-chao, GUO Hai-lin, LIU Jian-xiu. Relationships of Freezing Tolerance and the Contents of Carbohydrates,Proline,Protein in Centipedegrass(Eremochloa ophiuroides(Munro.) Hack.)[J]. , 2010, 18(6): 816-822.

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假俭草抗寒性与体内碳水化合物、脯氨酸、可溶性蛋白含量的关系

Relationships of Freezing Tolerance and the Contents of Carbohydrates,Proline,Protein in Centipedegrass(Eremochloa ophiuroides(Munro.) Hack.)

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