Regulatory Effects of Flowering Period Heating on Quality and Yield of'Shushanggan'Apricot Under Frost Stress

YANG Yifan; ZHANG Min; TIAN Bangqing; CHEN Yanrong; TANG Yongqing; SONG Yiqian; YU Qingfan; HE Mengya; YANG Mengyu

doi:10.19590/j.cnki.1008-1038.2026.06.006

Abstract：The'Shushanggan'apricots in the Yili Reclamation area have an early flowering period,often encountering low temperatures in spring or late frost damage,resulting in damaged floral organs and a significant decrease in fruit setting rate,leading to considerable economic losses.This study aimed to investigate the effects of different heating methods on the quality and yield of apricot under frost stress during the flowering period.Taking'Shushanggan'apricot as the test material,two heating methods(coal heating and smoke generator heating)were applied for temperature raising during the full flowering stage,with no heating as the control.The yield and quality indices were determined.The results showed that coal heating was more conducive to increasing the kernel transverse diameter,a*,H° and soluble solid content,compared with the control,the values increased by 11.53％,15.63％,14.97％and 24.00％,respectively.Smoke generator heating was more beneficial to the increase in fruit longitudinal diameter,fruit transverse diameter,single fruit weight,stone diameter and fruit solid-acid ratio of'Shushanggan'apricot,compared with the control,the values increased by 9.86％,8.44％,33.63％,24.84％,18.64％.There was a good correlation among various indices of'Shushanggan'apricot under different heating treatments.Through principal component analysis,single fruit weight,brittleness,firmness and yield per plant were identified as the evaluation indices for the effects of flowering period heating on the quality and yield of'Shushanggan'apricot under frost stress.A comprehensive evaluation showed that smoke generator heating was superior to coal heating,which provided a theoretical foundation for the frost prevention measures of'Shushanggan'apricot in the Ili Reclamation area.