Ion Absorption Characteristics of Mineral Elements of Alkali-tolerant Rice Mutant ACR78 under Soda Saline-alkaline Stress

doi:10.7668/hbnxb.2009.02.024

Abstract

Abstract: The content change of K⁺,Na⁺,Ca²⁺,Mg²⁺, Fe²⁺and Zn²⁺ of alkaline tolerant rice mutant(ACR 78) and its wild type were compared analysis by pot culture.The results showed that the total Na+ content of ACR78 was 2.9 % lower than that of the wild type,and the K⁺,Zn²⁺ and Mg²⁺ content of ACR78 were 18.3 %, 89.7 %and 4.9 %(P <0.05)higher than that of the wild type respectively.The ratio of K⁺ and Na⁺ in stem of ACR78 was approximately 1.4 times of the wild type,the difference was very significant.The Na⁺ content in root and stem of ACR78 were significantly lower than that of the wild type(14.0 % and 5.9 % respectively),and the K⁺ content in stem of ACR78 was 32.3 % higher than the wild type,but the content in root and stem were no difference.The Zn²⁺ content in root and stem of ACR78 were 44.2 % and 202.7 % higher than the wild type respectively.The distribution law of Mg²⁺ content in organs was opposite to the Na⁺ content.The results indicated that ACR78 could significantly inhibit the uptake of Na⁺ and had the ability of selective uptake to K⁺, Zn²⁺ and Mg²⁺.

Key words: Rice, Alkaline tolerant mutant, ACR78, Ion uptake

CLC Number:

Q94.78

QI Chun-yan, LIANG Zheng-wei, YANG Fu, WANG Zhi-chun. Ion Absorption Characteristics of Mineral Elements of Alkali-tolerant Rice Mutant ACR78 under Soda Saline-alkaline Stress[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2009, 24(2): 112-116. doi: 10.7668/hbnxb.2009.02.024.

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