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Study on Physiological Characteristics of Three Different Cold-resistant Tomato Strains 被引量:6

3种不同耐寒番茄品系的生理特性研究(摘要)(英文)
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摘要 [Objective]The aim was to study cold-resistant indexes and physiological characters of three different cold-resisitant tomato strains selected under natural conditions. [Method]With 3-4 weeks tomato seedlings as tested materials,through simulating external environment conditions by the cold treatment in lab,the survival ratio and growth status of seedlings were identified; by studying the morphological change of in vitro leaves after cold treatment and determining the relative conductivity,the cold-resistant degree of different tomato strains was identified and the correlation between conductivity and survival rate was analyzed; the variation of soluble sugar and praline content in plant of tomato was determined under the condition of cold stress. [Result]The results showed that leaf morphological changes,size of conductivity and growth status of different tomato strains after cold treatment have significant differences; the variation of soluble sugar contents in plant has significant differences,while the variation of proline content has no significant differences. [Conclusion]There is a certain correlation between conductivity and survival rate under cold treatment conditions,and plant cold tolerance is related to accumulation of soluble sugar content. [目的]研究自然条件下选育的3种不同耐寒番茄品系的耐寒指标及其生理特性。[方法]以3~4周的番茄幼苗为材料,通过实验室冷处理模拟外界环境条件,鉴定植株的存活及生长状况;研究植株离体叶片冷处理恢复后的形态变化并测定相对电导率,鉴定不同品系番茄植株的耐寒程度,分析电导率与存活率的相关性;测定冷胁迫条件下番茄植株体内可溶性糖和脯氨酸含量变化。[结果]正常培养条件下,耐寒品系番茄生长4周的植株形态矮小,中等耐寒品系番茄形态略高,不耐寒品系最为高壮。-4℃条件下处理6h后,耐寒品系、中等耐寒品系、不耐寒品系番茄,平均存活率分别达63.33%、44.57%、1.23%。番茄离体叶片-4℃冷处理后,耐寒品系叶片卷缩程度较小,叶片颜色呈碧绿色;中等耐寒品系叶片颜色呈深绿色且卷缩程度较大;不耐寒品系叶片颜色呈深黑色,卷缩程度最大。耐寒品系90%以上的相对电导率在42.62%以下,不耐寒品系90%以上的电导率在62.67%以上,中等耐寒品系90%以上的电导率约为52.05%。不同品系番茄植株体内可溶性糖含量变化差异显著,脯氨酸含量变化差异不显著。[结论]冷处理条件下电导率与存活率存在一定相关性,植株耐寒性与可溶性糖含量的积累有关。
出处 《Agricultural Science & Technology》 CAS 2010年第1期113-116,共4页 农业科学与技术(英文版)
基金 Supported by National Key Technology R&D Program of China(2008BADC0B00) Natural Innovation Experiment Program for University students (081035917) International Cooperation Program of Anhui (08080703002)~~
关键词 TOMATO Cold-resistant Relative conductivity Soluble sugar PROLINE 番茄 耐寒性 相对电导率 可溶性糖 脯氨酸
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参考文献9

  • 1LI RQ(利容干),WANG JB(王建波).Plant stress cell and physiology(植物逆境细胞及生理学)[M].Wuhan: Wuhan University Press(武汉:武汉大学出版社),2002:141.
  • 2张正斌.植物对环境胁迫整体抗逆性研究若干问题[J].西北农业学报,2000,9(3):112-116. 被引量:31
  • 3周青,黄晓华,王东燕,曹玉华,宁允叶,金琎.钙对酸雨伤害甜瓜幼苗的影响[J].植物生态学报,1999,23(2):186-191. 被引量:87
  • 4王孝宣,李树德,东惠茹,高振华,戴善书.番茄品种耐寒性与ABA和可溶性糖含量的关系[J].园艺学报,1998,25(1):56-60. 被引量:149
  • 5THOMASHOW MF. Role of cold-responsive genes in plant freezing tolerance [J]. Plant Physiology, 1998, 118:1-7.
  • 6JAGLO-OTTOSEN KR, GILMOUR SJ, ZARKA DG, et al. Arabidopsis CBF1 overexpression induces COR genes and enhances freezing tolerance [J]. Science, 1998, 280:104-106.
  • 7THOMASHOW MF. Plant cold acclimation; freezing tolerance genes and regulatory mechanisms [J]. Annu Rev Plant Physiol Plant Mol Biol, 1999, 50:571 -599.
  • 8HSIEH TH, LEE JT, YANG PT, et al. Heterology expression of arabi-dopsis C-repeat/dehydration response element binding factor 1 gene confers flevated tolerance to chilling and oxidative stresses in transgenic tomato [J]. Plant Physiology, 2002, 129(3): 1086- 1094.
  • 9HSIEH TH, LEE JT, YANG PT, et al. Tomato plant ectopicelly expressing Arabidopsis CBF1 how enhanced resistance to water deficit stress [J]. Plant Physiology, 2002, 130:618-626.

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