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Physiologic regulation of mixtalol in rape senescence and its yield effects

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Abstract

Physiologic and yield effects of mixtalol at various concentrations sprayed on rape at the anthesis stage were examined. Foliar sprays of 4 and 2 ppm mixtalol significantly increased the chlorophyll content of rape leaves and pods, reduced the accumulation of malondialdehyde and ethylene production, and delayed the degradation of superoxide dismutase and catalase activities of the rape plant. Mixtalol also increased root oxidizability. Meanwhile, the number of branches and pods per plant was increased, and a 10.7% and 8.2% increase of seed yield over the controls was observed with treatments of 4 and 2 ppm mixtalol, respectively. No significant effects from mixtalol were observed on the maturation of plants or on the seed oil content or the erucic acid and glucosinolate content. Total rape oil production increased with 4 and 2 ppm mixtalol significantly by 12.4% and 10.5%, respectively, over the controls.

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Abbreviations

MTL:

mixtalol

MDA:

malondialdehyde

TBA:

thiobarbituric acid

SOD:

Superoxide dismutase

CAT:

catalase

TTC:

tetrazolium

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Authors and Affiliations

  1. Department of Agronomy, Zhejiang Agricultural University, 310029, Hangzhou, China

    W. Zhou & S. Tao

  2. Central Laboratory, Zhejiang Agricultural University, 310029, Hangzhou, China

    D. Zhao

Authors
  1. W. Zhou
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  2. S. Tao
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  3. D. Zhao
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Zhou, W., Tao, S. & Zhao, D. Physiologic regulation of mixtalol in rape senescence and its yield effects. J Plant Growth Regul 14, 37–40 (1995). https://doi.org/10.1007/BF00212644

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  • DOI: https://doi.org/10.1007/BF00212644

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