Studies on the Cold Resistance of Four Magnoliaceae Species in Guizhou Province

FANG Xiao-ping; LI Chang-yan; HU Guang-ping

The cold resistance of four Magnoliaceae species in Guizhou Province was studied by means of comparing the related physiological indices including TL50, MDA content and SOD activity under cold stress caused by gradient of low-temperature treatment in order to provide theoretical reference for the landscaping application of these native species. The results showed that the TL50 of each species was different, the lowest TL50 was -17.07 ℃ with Parakmeria lotungensis, while the highest TL50 was -6.38 ℃ with Tsoongiodron odorum. The first MDA peak value of each species all appeared above the TL50, and that of Tsoongiodron odorum appeared at the relatively highest temperature, whereas the first MDA peak value of Parakmeria lotungensis occurred at the relatively lowest temperature. The SOD activity of Tsoongiodron odorum substantially increased at the temperature between 5 ℃ and 4 ℃, but then decreased gradually after the temperature was lower than -4 ℃; The SOD activity of the rest three tree species changed less with the temperature variation. The cold resistance of the four species was ranked in the order as Parakmeria lotungensis＞Michelia chapensis＞Michelia crassipes＞Tsoongiodron odorum in the light of above indices.

1. Institute of Life Sciences, Guizhou Normal University, Guiyang 550001, Guizhou, China

2. High School of Qiandongnan Prefecture, Kaili 556000, Guizhou, China

Received Date: 2010-04-10

Abstract: The cold resistance of four Magnoliaceae species in Guizhou Province was studied by means of comparing the related physiological indices including TL50, MDA content and SOD activity under cold stress caused by gradient of low-temperature treatment in order to provide theoretical reference for the landscaping application of these native species. The results showed that the TL50 of each species was different, the lowest TL50 was -17.07 ℃ with Parakmeria lotungensis, while the highest TL50 was -6.38 ℃ with Tsoongiodron odorum. The first MDA peak value of each species all appeared above the TL50, and that of Tsoongiodron odorum appeared at the relatively highest temperature, whereas the first MDA peak value of Parakmeria lotungensis occurred at the relatively lowest temperature. The SOD activity of Tsoongiodron odorum substantially increased at the temperature between 5 ℃ and 4 ℃, but then decreased gradually after the temperature was lower than -4 ℃; The SOD activity of the rest three tree species changed less with the temperature variation. The cold resistance of the four species was ranked in the order as Parakmeria lotungensis＞Michelia chapensis＞Michelia crassipes＞Tsoongiodron odorum in the light of above indices.

HTML

Reference (19)

[1]	梁宁,石雷,杨杨.8种植物木兰科植物种子的发芽、成苗试验[J].西部林业科学,2006,35(3):72-75
[2]	刘东明,董祖林,伍有声,等.木兰科植物主要病虫害及其防治研究[J].江苏林业科技,2004,31(3):22-25
[3]	杨成华,方小平.贵州原生木兰科植物资源与园林利用前景[J]. 贵州林业科技,2002,30(1):20-25
[4]	何开跃,李晓储,黄利斌,等.3种含笑耐寒生理机制研究[J]. 南京林业大学学报,2004,28(4):62-64
[5]	刘兴宇,周广柱,王新颖.日本厚朴抗寒生理研究[J]. 沈阳农业大学学报,2006,37(6):845-848
[6]	中国科学院上海植物生理研究所,上海市植物生理学会. 现代植物生理学实验指南[M].北京:科学出版社,1999-12-1
[7]	张力.SPSS在生物统计中的应用[M].厦门:厦门大学出版社,2008
[8]	李刚.几种木兰科常绿树种幼苗的抗寒性及在冬春季节光合生理生态特征的研究 .南京:南京农业大学,2006
[9]	高俊凤.植物生理学实验指导[M].北京:高等教育出版社,2006:210-211
[10]	刘祖祺,张石城.植物抗性生理学[M].北京:中国农业出版社,1994:8-42
[11]	黄毅斌,应朝阳,柯碧南,等.两种多年生花生品种低温胁迫下的质膜透性研究[J].四川草原,2005(10):4-6
[12]	郭素枝,邓传远,张国军,等.低温对单、双瓣茉莉叶片细胞膜透性的影响[J].中国生态农业学报,2006,14(1):42-44
[13]	莫惠栋. Logistic 方程及其应用[J].江苏农学院学报,1983,4(2):53-57
[14]	聂庆娟,孟朝,梁海永,等. 低温胁迫对4种常绿阔叶植物膜脂过氧化及保护酶活性的影响[J].植物研究,2007,27(5):578-581
[15]	刘小序.四种石蒜科植物的抗寒性比较[J].现代农业科技,2007(16):12-13
[16]	Loyons J M. Chilling injury in plants . Plant Physical,1973,24:445-446
[17]	覃鹏,刘飞虎,梁雪妮. 超氧化物歧化酶与植物抗逆性[J]. 黑龙江农业科学,2002(1):31-34
[18]	刘从霞,邓明净,王文凤,等. 5种李属彩叶树木抗寒性研究[J].河北农业大学学报,2007,30(5):36-39
[19]	杨建民,李艳华,杨敏生,等.几个仁用杏品种抗寒性比较研究[J]. 中国农业科学1999,32 (1):46-50

Studies on the Cold Resistance of Four Magnoliaceae Species in Guizhou Province

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views