Journal of Zhejiang Agricultural Sciences ›› 2026, Vol. 67 ›› Issue (5): 1203-1208.DOI: 10.16178/j.issn.0528-9017.20250262

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Study on tetraploid mutagenesis and preliminary identification of asparagus Jialu 1

YANG Xiangxiang(), ZHANG Xujuan, YU Kexin, SHI Weiyao, SHI Jianjun()   

  1. Hangzhou Jiahui Agriculture Development Co. ,Ltd. ,Hangzhou 311228,Zhejiang
  • Received:2025-04-02 Online:2026-05-11 Published:2026-05-12
  • Contact: SHI Jianjun

Abstract:

In order to obtain new tetraploid asparagus germplasm,this study used diploid asparagus Jialu 1(2n = 20)as the experimental material,and treated the exposed white seeds of Jialu 1 with 0.2% colchicine(containing 2% DMSO)for 16,32 and 48 h,respectively,and identified the ploidy of the mutants by flow cytometry and morphological observation. The results showed that the tetraploid induction rates of the three treatments were greater than 10.00%. Among them,the induction effect of 0.2% colchicine treatment for 32 h was the best,with an induction rate of 15.67%. Compared with diploid plants,tetraploid asparagus plants exhibited morphological characteristics such as thicker stems,longer leaves,and shorter internodes. In terms of cytology,the stomata was enlarged,the stomatal density was reduced,the guard cells were enlarged,indicating that the tetraploid Jialu 1 asparagus plants had been successfully obtained,which could provide new germplasm for subsequent asparagus breeding.

Key words: asparagus, colchicine, tetraploid mutagenesis, tetraploid screening

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