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Acta Prataculturae Sinica ›› 2013, Vol. 22 ›› Issue (2): 227-234.

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Cold-tolerance of 5 species of Juncao under low temperature stress

LIN Xing-sheng1,3, LIN Zhan-xi1,3, LIN Dong-mei1,3, LIN Hui1,3, LUO Hai-ling1,3, HU Ying-ping1,3, LIN Chun-mei1,3, ZHU Chao-zhi2   

  1. 1.Juncao Research Institute, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
    2.Jinshan College, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
    3.National Engineering Research Center of Juncao, Fuzhou 350002, China
  • Received:2011-12-27 Online:2013-02-25 Published:2013-04-20

Abstract: To select excellent Juncao species with high cold-resistance, 5 species of Juncao including Arundo sp., Arundo donax, Pennisetum sp., Pennisetum purpureum and Echinochloa crusgalli were taken as test materials and treated at 3, 0, -5, -10, -15, -20℃. Electrolyte leakage, malondialdehyde content and soluble sugar content, activity of superoxide dismutase, peroxidase, catalase and the mortality rate after recovery test were determined to detect cold resistance of the 5 species. The semi-lethal temperatures (LT50) of Arundo sp., A. donax, Pennisetum sp., P. purpureum and E. crusgalli were -12.05, -21.28, 0.69, 0.18, -1.98℃ respectively. The cold-resistance of the 5 Juncao species was evaluated mathematically as A. donax >Arundo sp.>E. crusgalli>P. purpureum>Pennisetum sp., which is in accord with the results after the recovery test from low temperature stress.

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