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不同基因型番茄种子萌发期的耐盐性

杨凤军1,2;李天来1;臧忠婧3;宿越1;鲁少尉1   

  1. 1沈阳农业大学园艺学院辽宁省设施园艺重点实验室, 沈阳 110161;2黑龙江八一农垦大学农学院, 黑龙江大庆 163319;3黑龙江八一农垦大学生命科学技术学院, 黑龙江大庆 163319
  • 收稿日期:2008-11-24 修回日期:1900-01-01 出版日期:2009-07-20 发布日期:2009-07-20

Salt resistance of different tomato genotypes at seed germination stage.

YANG Feng-jun1,2;LI Tian-lai1;ZANG Zhong-jing3;SHU Yue1;LU Shao-wei1   

  1. 1Liaoning Provincial Key Laboratory of Protected Horticulture, College of Horticulture, Shenyang Agricultural University, Shenyang 110161, China;2College of Agronomy, Heilongjiang August First Land Reclamation University, Daqing 163319, Heilongjiang, China;3College of Life Science and Biotechnology, Heilongjiang August First Land Reclamation University, Daqing 163319, Heilongjiang, China
  • Received:2008-11-24 Revised:1900-01-01 Online:2009-07-20 Published:2009-07-20

摘要: 选用14种不同基因型番茄进行萌芽期NaCl胁迫耐盐性筛选,对相对发芽势和相对发芽率两项指标进行聚类分析,将其划分为耐盐性强(5种)和耐盐性弱(9种)两类,从中选出4种耐盐性和生物性状不同的番茄(耐盐性强:野生醋栗番茄、小果型辽园红玛瑙、大果型红宝石;耐盐性弱:大果型辽园红多丽)分别进行不同种类钠盐以及NaCl、Na+、Cl-两组胁迫试验.结果表明:4种不同基因型番茄对各种盐胁迫响应与NaCl的鉴定结果一致;不同Na+盐中碱性盐NaHCO3对番茄的影响最大,在100 mmol·L-1 Na+浓度下,4种基因型番茄的相对胚芽长度都在8%以下,5种盐对番茄种子萌发的抑制顺序为:NaNO3<Na2SO4<NaH2PO4<NaCl<NaHCO3;NaCl、Na+、Cl-胁迫下,Cl-对番茄的伤害最小.

关键词: 水分胁迫, 枫杨幼苗, 光合作用, 生长, 三峡库区

Abstract: Based on the cluster analysis of relative germination potential and relative germination rate under NaCl stress, fourteen tomato genotypes were clustered into two groups. Five tomato genotypes held high resistance to NaCl stress, and nine tomato genotypes were moderately NaCl- tolerant. The highly NaCl-tolerant genotypes wild Lycopersicon pimpinellifolium, Liaoyuanhongmanao and Hongbaoshi and the moderately NaCl- tolerant genotype Liaoyuanhongduoli were then under different Na+-salts and NaCl, Na+, and Cl- stresses. The responses of the four tomato genotypes to different Na+-salts stress were the same as those to NaCl stress. Among the test Na+-salts, NaHCO3 had the greatest impact. Under the stress of 100 mmol NaHCO3·L-1, the embryo’s relative lengths of the four tomato genotypes were all below 8 %. The inhibitory effect of test Na+-salts on tomato seed germination was in the order of NaNO3<Na2SO4<NaH2PO4<NaCl<NaHCO3. As for NaCl, Na+ and Cl-, the Cl- had the smallest injury.

Key words: water stress, Pterocarya stenoptera seedling, photosynthesis, growth, the Three Gorges Reservoir region.