ACTA AGRICULTURAE BOREALI-SINICA ›› 2015, Vol. 30 ›› Issue (3): 98-104. doi: 10.7668/hbnxb.2015.03.018

Special Issue: Rice

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Effects of Low Temperature on Physiological Indexes of Rice PTGMS Lines at the Fertility Sensitive Stage

BAI Bin1,2, WU Jun1,2, ZHUANG Wen2, YAO Dong-ping2,3, LI Ying-ge1,2, DENG Qi-yun1,2,3   

  1. 1. Longping Branch of Graduate School, Central South University, Changsha 410125, China;
    2. State Key Laboratory of Hybrid Rice, China National Hybrid Rice Research and Development Center, Changsha 410125, China;
    3. College of Agronomy, Hunan Agricultural University, Changsha 410128, China
  • Received:2015-03-14 Published:2015-06-28

Abstract: Using five photo thermo sensitive genic male sterile(PTGMS) lines widely used in the production as experimental materials,a growth chamber experiment was conducted to analysis physiological characteristics of these lines and ascertain the intrinsic physiological index of the cold-tolerant lines under the effects of low temperature stress of different duration.The 17.5 ℃,10 d treated plants as cold treated materials,the 21 ℃,10 d fertile treated plants as control materials,the physiological indexes were investigated in the stage of the fifth,the tenth day of treatment and the fifth day of transplanting to field,respectively.The results showed that in the early days of cold treated stage,comparing the cold-sensitive sterile lines,the SPAD values of cold-tolerant lines had no significant chang,SOD,POD activity had slight enhancement,MDA and relative conductivity values increased slightly.But after a long time of cold treatment,SPAD,Pn,Tr,SOD,POD values of cold-tolerant lines decreased gradually,MDA and relative conductivity values increased gradually,but these changes were lower than those of cold-sensitive lines.

Key words: Rice, Photo thermo sensitive genic male sterile line, Low temperature, Fertility sensitive stage, Physiological index

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Cite this article

BAI Bin, WU Jun, ZHUANG Wen, YAO Dong-ping, LI Ying-ge, DENG Qi-yun. Effects of Low Temperature on Physiological Indexes of Rice PTGMS Lines at the Fertility Sensitive Stage[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2015, 30(3): 98-104. doi: 10.7668/hbnxb.2015.03.018.

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