›› 2018, Vol. 30 ›› Issue (6): 985-991.DOI: 10.3969/j.issn.1004-1524.2018.06.14

• Horticultural Science • Previous Articles     Next Articles

Effect of different concentrations of methyl-jasmonate on fruit quality of Chunmi peach

LI Qiuli, GAO Dengtao*, WEI Zhifeng, WANG Zhiqiang, LIU Junwei, YANG Wenjia   

  1. Zhengzhou Fruit Research Institute, CAAS, Zhengzhou 450009, China
  • Received:2017-08-29 Online:2018-06-20 Published:2018-07-02

Abstract: Early maturing peach Chunmi was treated with different concentrations of methyl-jasmonate (MJ) to discuss its effect on fruit quality. Chunmi peach treated with of 125, 250, 500, 1 000 and 2 000 mg·L-1 MJ at S3 stage were taken as the test materials to study the changes of single fruit weight, longitudinal and transverse diameter, soluble solid content, titratable acid content, firmness and color parameters of fruit during fruit development and ripening stage. The results showed that the single fruit weight, longitudinal and transverse diameter of Chunmi peach were significantly increased in 250 mg·L-1 MJ treatment, were decreased significantly in 1 000 and 2 000 mg·L-1 MJ treatment, while there was no significant difference in 125 and 500 mg·L-1 MJ treatment compared with the control group. Different concentrations of MJ treatment increased the soluble solid content, reduced titratable acid content, but showed no significant difference among treatments. The firmness of fruit was increased in 250 and 2 000 mg·L-1 MJ treatment, while there was no significant difference by the other MJ treatments compared with the control group. The color parameters showed no significant difference in all MJ treatments compared with the control group. The results of single fruit weight, longitudinal and transverse diameter, firmness and color parameters of fruit during fruit development period were consistent with that during fruit mature period. Different concentrations of MJ treatment increased the ratio of soluble solids to acidity, but there was no significant difference among treatments during fruit mature period. The fruit shape index, soluble solid content and titratable acid content showed no significant difference in all MJ treatments compared with the control group during fruit mature period. In conclusion, the 250 mg·L-1 concentration of MJ was shown better application effect on the early maturing peach Chunmi during fruit development and ripening stage.

Key words: peach, methyl-jasmonate, fruit quality

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