The Physiological Response of Main Cultured Maize Cultivars under Seawater Stress in Coastal Area of Hebei Province

doi:10.7668/hbnxb.2011.S1.027

Abstract

Abstract: 10 maize cultivars which were mainly cultivated in coastal area of province under seawater stress were studied.We investigated the SOD and POD activity,soluble protein content,free proline content,malondialdehyde(MDA)content and photosynthetic pigment content,photosynthetic rate in order to compare the changes of physiological indexes under seawater stress,and explored the salt tolerance of different maize species by membership function values.The results showed:the photosynthetic pigment content,soluble protein content and photosynthetic rate were declined;POD,SOD activity were increased in some species and were declined in other species;free proline content and malondialdehyde content were increased.Evaluation of membership function value of 10 maize species on the salt tolerance results showed:Jingdan 28,Jiyuan 1 and Dongdan 16 were the most tolerant species to salt stress;Liyu 16,Zhengdan 958,Dongdan 8,Dongdan 13 and Lianyu 16 were moderate tolerance to salt stress;Jundan 20 and Dongdan 60 were the weakest tolerance to salt stress.

Key words: Maize, Seawater stress, Physiological response

CLC Number:

S513.01

PENG Xiao-hong, QI Yan-ling, SHAO Shu-hui, DAI Bo, QIN Ling, YANG Qing, DU Jin-you. The Physiological Response of Main Cultured Maize Cultivars under Seawater Stress in Coastal Area of Hebei Province[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2011, 26(S1): 126-130. doi: 10.7668/hbnxb.2011.S1.027.

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