Responses of Na2CO3+ NaHCO3Stress on Seedling of Tolerant Weedy Rice and Physiological Basis

doi:10.7668/hbnxb.2011.06.020

Abstract

Abstract: Based on water culture， the effects of the Na₂CO₃+ NaHCO₃stress on growth， root characters and osmoregulation substances of seedling were studied． The results showed that， the height，biomass accumulation， the total root length， the root volume， the total surface area， the total absorption area， the active absorption area of all materials decreased，with concentrations of Na₂CO₃+ NaHCO₃increasing． The trends of the decreasing range was the similar． Kosihihikari >Changbai9 >WR03-12． The trends of the increasing range of proline content was Kosihihikari >Changbai9 >WR03-12． The trends of the increasing range of ainonitmgen content and soluble sugar of all materials was different． The ainonitmgen and soluble sugar content in WR03-12 increased，and the trends of the increasing range was gradually increasing． The content of Changbai9 had a sharp increase at first，while the trends of the increasing range was gently latter． The trends of the increasing range of Changbai9 was identical with the ainonitmgen content of Kosihihikari． The ainonitmgen and soluble sugar content of Kosihihikari increased，and the trends of the increasing range was gradually increasing．

Key words: Weedy rice, Seedling, Morphological, Physiological, Na₂CO₃+ NaHCO₃

CLC Number:

S511． 01

ZHANG Li-li, MA Dian-rong, CHEN Wen-fu, MIAO Li-xin, LI Xun, SUI Ya-yun. Responses of Na₂CO₃+ NaHCO₃Stress on Seedling of Tolerant Weedy Rice and Physiological Basis[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2011, 26(6): 102-107. doi: 10.7668/hbnxb.2011.06.020.

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