植物遗传资源学报2025，Vol.26Issue(6)：1132-1141,10.DOI:10.13430/j.cnki.jpgr.20241031002
甘薯不同等级脱毒苗的光合特性、产量和品质比较研究
Photosynthesis,Yield and Quality of Different Gradation Virus-free Seedlings of Sweetpotato Varieties
摘要
Abstract
The production of virus-free sweetpotato seedlings through direct field cultivation of tissue-cultured seedlings or minituber-derived seedlings has become a promising propagation technology for widespread application.In order to investigate the differential effects of these two propagation methods on field performance,yield and quality across sweetpotato varieties,we conducted a comparative study using 12 sweetpotato varieties with both methodologies.The results showed that:(1)Photosynthetic characteristics-Tissue-cultured seedlings of Mingmenjinshi,Shenglibaihao,Ningzishu 4 and Pushu 32 exhibited significantly higher photosynthetic activity and pigment content compared to minituber-derived seedlings,whereas Shangshu 19 showed the opposite trend.(2)Tuber yield-Tissue-cultured seedlings of Mingmenjinshi,Shenglibaihao and Ningzishu 4 produced 30.95％,21.90％and 14.67％higher fresh tuber yield,respectively,but Shangshu 19 tissue-cultured seedlings yielded 10.42％less than their minituber-derived seedlings.(3)Tuber quality-Crude starch content of Ningzishu 4 tissue-cultured seedlings,soluble sugar content of Hongyao tissue-cultured seedlings,soluble sugar content and crude protein content of Mashali tissue-cultured seedlings,crude protein content of Pushu 32 tissue-cultured seedlings were all significantly lower than minituber-derived seedlings.Crude starch content of Jinhaimeixiu tissue-cultured seedlings was significantly higher than minituber-derived seedlins,but reducing sugar and soluble sugar of tissue-cultured seedlings were significantly lower than minituber-derived seedlings.Dry matter rate of Mingmenj inshi tissue-cultured seedlings were significantly higher than minituber-derived seedlings.(4)Correlation analysis revealed distinct relationships between photosynthesis parameters and tuber quality;only water use efficiency and dry matter content showed negative correlation in tissue-cultured seedlings,whereas net photosynthetic rate,water use efficiency,and carboxylation efficiency had significant effects on the fresh potato quality of minituber-derived seedlings.This study can provide a theoretical basis for optimizing the use of tissue-cultured and minituber-derived propagation methods for different sweetpotato varieties.关键词
甘薯/组培驯化苗/原原种苗/光合作用/产量/品质Key words
sweetpotato/tissue-cultured seedling/minituber-derived seedling/photosynthesis/yield/quality引用本文复制引用
袁蕊,王洁,戴习彬,孙书军,赵冬兰,周志林,曹清河..甘薯不同等级脱毒苗的光合特性、产量和品质比较研究[J].植物遗传资源学报,2025,26(6):1132-1141,10.基金项目
国家甘薯产业技术体系(CARS-10-GW) （CARS-10-GW）
江苏省重点研发计划(BE2021384) （BE2021384）
国家作物种质资源库(NCGRC-2024-43)China Agriculture Research System-Sweetpotato(CARS-10-GW) （NCGRC-2024-43）
Key Research and Development Program of Jiangsu Province(BE2021384) （BE2021384）
National Crop Germplasm Resource Centre(NCGRC-2024-43) （NCGRC-2024-43）
