花椒黄花病对花椒生长和内源激素的影响OA

Flower yellowing disease of Zanthoxylum schinifolium is an increasingly serious disease.In order to explore the etiology and lay theoretical foundation for control,this study took the yellow flower plants and normal plants of Z.schinifolium'Tengjiao'as the research objects,and measured their agronomic traits,soil nutrients,leaf amino acids,plant endogenous hormones,and mineral element content.The results showed that Z.schinifolium plants with yellow flower disease had fewer pepper leaves,thinner branches,and decreased fruit set per cluster.Compared with the normal plant,the arginine content in leaves increased by 1.37 times,and the dihydrozeatin(DHZ)in the stems,leaves and fruits increased by 274％,54.72％ and 24.36％,respectively.The content of gibberellin GA44 in the three parts of the flower yellowing disease plant was increased by more than 1.5 times.The calcium content in leaves and fruits decreased,and the decline rate in fruits was as high as 18.89％.Therefore,in the process of preventing and controlling yellow flower disease,attention should be paid to supplementing calcium and magnesium elements,and optimizing the use of plant regulators.