耐盐杂草稻幼苗对NaCl胁迫响应及其生理基础

doi:10.7668/hbnxb.2010.04.027

摘要/Abstract

摘要： 采用人工气候箱水培试验,研究了不同浓度NaCl处理对杂草稻幼苗生长、根系特性和渗透调节物质的影响.结果表明,随NaCl处理浓度的增加,3个试验材料苗高、地上部鲜质量、地上部干质量、地下部鲜质量和地下部干质量均降低,且降幅均为越光﹥长白9号﹥WR03-12.低NaCl胁迫下,WR03-12主根长有增加趋势.随NaCl浓度增加,3个材料根系总根长、根系体积、总表面积、吸收面积和活性吸收面积均呈下降趋势,下降幅度越光最大,长白9号居中,WR03-12最小.随NaCl浓度增加,3个材料游离氨基酸、可溶性糖含量均显著增加,增幅均为WR03-12﹥长白9号﹥越光,脯氨酸含量也随胁迫浓度增加而上升,增幅为越光﹥长白9号﹥WR03-12.

关键词: 杂草稻, 幼苗, 形态, 生理, NaCl胁迫

Abstract: Based on water culture，the effects of the NaCl stress on growth，r oot characters and osmoregulation substances of seedling were studied. The results showed that，the height，the shoot fresh weight，the shoot dry weight， the root fresh weight and the root dry weight of all materials decreased，while root length of WR03-12 increased under low NaCl concentration. With concentrations of NaCl increasing，the total root length，the root volume，the total surface area，the total absorption area，the active absorption area of all materials decreased. The trends of the decreasing range was the similar. Kosihihikari ＞ Changbai9 ＞ WR03-12. Aminonitmgen content and soluble sugar content increased with NaCl increasing，The trends of the increasing range was similar. WR03-12 was biggest，Changbai9 was smaller， and Kosihihikari was smallest. However the trends of the increasing range of proline content was opposite，Kosihihikari ＞ Changbai9 ＞ WR03-12.

Key words: Weedy rice, Seeding, Morphology, Physilogy, NaCl stress

中图分类号:

S511.01

张丽丽, 马殿荣, 林志强, 孙健, 陈温福. 耐盐杂草稻幼苗对NaCl胁迫响应及其生理基础[J]. 华北农学报, 2010, 25(4): 123-129. doi: 10.7668/hbnxb.2010.04.027.

ZHANG Li-li, MA Dian-rong, LIN Zhi-qiang, SUN Jian, CHEN Wen-fu. Responses of NaCl Stress on Seedling of Tolerant Weedy Rice and Physiological Basis[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(4): 123-129. doi: 10.7668/hbnxb.2010.04.027.

http://www.hbnxb.net/CN/Y2010/V25/I4/123

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