摘要
为探讨赤霉素(GA_(3))与6-苄氨基嘌呤(6-BA)对甜樱桃果实品质形成的影响,以南方地区设施栽培甜樱桃新品种‘江南锦’及传统品种‘雷尼’为试验材料,从盛花期到盛花末期,相隔10 d分两次喷施不同浓度与比例的GA_(3)与6-BA,对植株坐果率及果实品质指标进行测定,并对果实内源激素、相关酶活性及基因表达进行分析。结果表明,单独使用GA_(3)处理,对促进‘江南锦’果实成熟与糖分积累、提高果实品质的效果较好,施用两次90 mg·L^(-1) GA_(3),‘江南锦’果实采收期单果达到5.65 g,可溶性固形物含量达到20.37%,并使果实成熟过程中内源激素动态变化趋势较对照提前,显著提高了果实中可溶性糖含量与相关酶活性,以及调控糖、花青素合成相关基因的表达水平。整体上,‘江南锦’比‘雷尼’适宜更低浓度的GA_(3)处理。综上,适宜浓度GA_(3)对于提高‘江南锦’甜樱桃坐果率和果实糖分含量,促进果实成熟具有积极作用,以盛花期施用90 mg·L^(-1) GA_(3),间隔10 d再施一次处理最佳。
In order to investigate the effects of gibberellin(GA_(3))and 6-benzylaminopurine(6-BA)on the development of fruit quality in sweet cherries,the new variety‘Jiangnanjin’and the traditional variety‘Rainier’,grown under protected cultivation in southern China,were used as experimental materials.Different concentrations and ratios of GA_(3) and 6-BA were applied twice,with a 10-day interval,starting from the blooming stage to the end of the peak flowering stage.The fruit set rate,fruit quality indicators,endogenous hormone levels,related enzyme activities,and gene expression were tested.The results indicated that the application of GA_(3) alone was particularly effective in promoting maturation and sugar accumulation in‘Jiangnanjin’,enhancing its fruit quality.The application of 90 mg·L^(-1) GA_(3) twice increased the average fruit weight to 5.65 g and the soluble solids content to 20.37%at harvest of‘Jiangnanjin’,which also led to an earlier dynamic trend of endogenous hormone changes during the fruit ripening process compared to the control,significantly increasing the soluble sugar content,the activity of related enzymes,and the expression levels of genes regulating sugar synthesis and anthocyanin production.Overall,‘Jiangnanjin’was found to be more responsive to lower concentrations of GA_(3) than‘Rainier’.In summary,the appropriate concentration of GA_(3) positively influences the fruit set rate and sugar content in‘Jiangnanjin’sweet cherries and promotes fruit ripening.The application of 90 mg·L^(-1) GA_(3) during the blooming stage and followed by a second application after an interval of 10 days was identified as the optimal concentration for this purpose.
作者
李都岳
吴延军
LI Duyue;WU Yanjun(Institute of Horticulture,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,China)
出处
《园艺学报》
北大核心
2025年第7期1855-1869,共15页
Acta Horticulturae Sinica
基金
浙江省农业新品种选育重大科技专项(2021C02066-9)
农业绿色发展先行先试支撑支撑体系建设服务项目(HY202001)。
关键词
甜樱桃
赤霉素
6-苄氨基嘌呤
糖分积累
果实成熟
着色
sweet cherry
gibberellin
6-benzylamino adenine
sugar accumulation
fruit ripening
fruit coloration
作者简介
通信作者:吴延军,E-mail:wyjwjht@163.com。
