Acta Agriculturae Boreali-Sinica

ACTA AGRICULTURAE BOREALI-SINICA ›› 1996, Vol. 11 ›› Issue (3): 73-76. doi: 10.3321/j.issn:1000-7091.1996.03.014

Special Issue: Corn；

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Physiological Effects of Ca2+ and BR on Chilling Tolerance in Maize Seedlings

Jiang Yiwei1, Wang Guangjie2   

  1. 1. Beijing Vegetable Research Center 100081;
    2. Shenyang Agricultural University 100161
  • Received:1995-03-02 Published:1996-09-28

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Abstract: The effects of exogenous Ca2+ and BR on respiratory rate and membrance permeability of maize plumule as well as on RCR,SOD activity and MDA contents in maize plumular mitochondria under chilling temperature were studied.The results showed that exogenous Ca2+ or BR treatments could increase the respiratory rate and decrease the membrane permeability.Higher mitochondria RCR was found in seedlings treated with Ca2+ and BR under chilling temperature.The SOD activity in mitochondria treated by exogenous Ca2+ was higher than that in the control,with lower MDA contents.It was considered that Ca2+ and BR might keep up the normal structure and function of the membrance system and thus promote the chilling tolerance of maize seedlings.

Key words: Ca2+, BR, Maize plumule, Chilling temperature, Mitochongdia, Respiratory rate

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Jiang Yiwei, Wang Guangjie. Physiological Effects of Ca2+ and BR on Chilling Tolerance in Maize Seedlings[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1996, 11(3): 73-76. doi: 10.3321/j.issn:1000-7091.1996.03.014.

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