Effect of Cu Stress on Endogenous Growth Regulators in Oilseed Rape

doi:10.14088/j.cnki.issn0439-8114.2018.20.005

Abstract

Abstract: To reveal the effect of Cu stress on physiological characteristics in oilseed rape（Brassica napus L.）,the content and interrelation of endogenous growth regulators under Cu stress were analyzed in this study. The results showed that,with the increase of treatment time and Cu concentration,abscisic acid（ABA） content in oilseed rape leaves showed a trend towards increasing. Meanwhile,the content of auxin（IAA） also increased with 1 day of Cu stress. However,with the increase of Cu stress,the growth promoting regulators,such as IAA,gibberellin（GA） and cytokinin（ZR）,would showed a trend towards decreasing. Further analysis of the interrelation between endogenous hormones showed that,with the increase of Cu stress,the values of IAA/ABA,GA/ABA,ZR/ABA and（IAA+GA+ZR）/ABA increased gradually,which would restraint cell division and leaf elongation. But,with the increase of ABA,the anti-stress response would be started in oilseed rape and the adversity resistance would be enhanced.

Key words: oilseed rape（Brassica napus L.）, Cu stress, endogenous growth regulators

CLC Number:

S565.4

YAN Hui, YANG Xiu-xia, LAI Fa-ying. Effect of Cu Stress on Endogenous Growth Regulators in Oilseed Rape[J]. HUBEI AGRICULTURAL SCIENCES, 2018, 57(20): 23-26.

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