中国农学通报2025，Vol.41Issue(22)：57-64,8.
植物生长调节剂对'京白梨'果形的调控作用
Regulatory Effects of Plant Growth Regulators on Fruit Shape of'Jingbaili'Pear
摘要
Abstract
The typical shape of'Jingbaili'pear is oblate,but improper pollinizer configuration and cultivation management often lead to deterioration of its fruit appearance quality.To enhance fruit marketability,this study investigated the regulation of fruit shape in'Jingbaili'pear using plant growth regulators(PGRs).Based on an analysis of fruit growth patterns,different PGRs combinations(gibberellin,cytokinin,brassinosteroid,and their mixtures)and application timings(early and later fruit development stages)were applied.Their effects on fruit growth,development,and quality were systematically evaluated.Results showed a significant positive correlation between single fruit weight and both fruit longitudinal and transverse diameters.The rapid growth period of longitudinal diameter occurred between 34 to 74 days after full bloom,while that of transverse diameter was between 74 to 94 days after full bloom.Early-stage application of gibberellin or cytokinin prolonged the rapid growth period of longitudinal diameter,whereas brassinosteroid application did not alter the growth patterns of diameters or the fruit shape index.Application of PGRs at the later stage showed no significant effect on the growth patterns of diameters or the fruit shape index.PGR application at both stages reduced the fruit skewness index,with the gibberellin and cytokinin combination being the most effective.In conclusion,applying PGRs,especially the combination of gibberellin and cytokinin,during the early fruit development stage is more conducive to correcting the fruit shape of'Jingbaili'pear.关键词
'京白梨'/果实生长曲线/果形指数/植物生长调节剂/果形调控/赤霉素/细胞分裂素Key words
'Jingbaili'pear/fruit growth curve/fruit shape index/plant growth regulators/fruit shaping/gibberellin/cytokinin分类
农业科技引用本文复制引用
刘晓琳,高同雨,苏本营,李晶..植物生长调节剂对'京白梨'果形的调控作用[J].中国农学通报,2025,41(22):57-64,8.基金项目
北京市科技计划课题"农业科技示范园灾后重建与新品种引种示范推广"(Z231100003723010). （Z231100003723010）
