NO对渗透胁迫下梭梭种子萌发及幼苗生长的影响

徐艳; 余学军; 高岩; 高培军1; 张汝民

NO对渗透胁迫下梭梭种子萌发及幼苗生长的影响

1 浙江农林大学林业与生物技术学院2 内蒙古农业大学农学院

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出版历程
- 收稿日期: 1899-12-31
- 修回日期: 1899-12-31
- 发布日期: 2011-11-29

Effects of NO on seed germination and seedling growth of Haloxylon ammodendron under osmosis stress

1 School of Forestry and Biotechnology, Zhejiang A & F University, Linan, 311300, P. R. China; 2 College of Agronomy, Inner Mongolia Agricultural University, Hohhot, 010019, P. R. China.

摘要

摘要: 为了探讨梭梭种子萌发及幼苗生长对渗透胁迫的适应能力，采用聚乙二醇6000(PEG-6000)和外源一氧化氮(NO)供体硝普钠(SNP)对梭梭种子进行处理，观测其种子萌发率和幼苗生长。结果表明：PEG-6000胁迫条件下，外源SNP处理能够显著提高梭梭种子的萌发率，增加幼苗根系和茎伸长生长，提高根系和茎叶的干质量；其中，300 μmol/L SNP作用最明显，在-0.5 MPa条件下，SNP处理梭梭种子萌发比对照率提高了13%，幼苗的根系和茎的伸长生长分别提高34%和21%。在-15 MPa条件下，梭梭种子萌发完全被抑制，SNP处理种子萌发率保持在40%以上。
- 梭梭 /
- 一氧化氮 /
- 渗透胁迫 /
- 种子萌发 /
- 幼苗生长
Abstract: To explore the adaptive capacity of seed germination and seedling growth of Haloxylon ammodendron under osmotic stress, seed germination percent and seedling growth of H. ammodendron were investigated using PEG and sodium nitroprusside (SNP). Results showed that seed germination percent of H. ammodendron was improved, as well as seedling root and stem growth, and dry weigh of seedlings increased with SNP treatment under PEG stress. Experimental data using SNP (300 μmol/L) was significant especially, and seed germination percent, seedling roots and stem elongate growth increased by 13%, 34% and 21% than control under -0.5 MPa conditions. Seed germination of H. ammodendron was completely inhibited under -1.5 MPa conditions, and seed germination rate was more than 40% using SNP treatment.
- Haloxylon ammodendron /
- nitric oxide /
- osmotic stress /
- seed germination /
- seedling growth

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文章访问数: 2692
HTML全文浏览量: 148
PDF下载量: 64
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NO对渗透胁迫下梭梭种子萌发及幼苗生长的影响

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出版历程

Effects of NO on seed germination and seedling growth of Haloxylon ammodendron under osmosis stress

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出版历程

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