Optimization of slow-release fertilizer application improves lotus rhizome quality by affecting the physicochemical properties of starch

作     者：ZHAO Shu-ping DENG Kang-ming ZHU Ya-mei JIANG Tao WU Peng FENG Kai LI Liang-jun ZHAO Shu-ping;DENG Kang-ming;ZHU Ya-mei;JIANG Tao;WU Peng;FENG Kai;Li Liang-jun

作者机构：College of Horticulture and Landscape ArchitectureYangzhou UniversityYangzhou 225009P.R.China Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of ChinaYangzhou UniversityYangzhou 225009P.R.China 

出 版 物：《Journal of Integrative Agriculture》 (农业科学学报（英文版）)

年 卷 期：2023年第22卷第4期

页      面：1045-1057页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 0902[农学-园艺学] 090202[农学-蔬菜学] 

基　　金：financial support they received from the National Key R&D Program of China(2020YFD1000300) the earmarked fund for China Agriculture Research System(CARS-24) the HighLevel Talent Support Plan(Lv-Yang-Jin-Feng),Yangzhou,China 

主　　题：Nelumbo nucifera Gaertn. slow-release fertilizer(SRF) lotus rhizome yield starch gene expression 

摘      要：To achieve the dual goals of high yield and good quality with low environmental costs,slow-release fertilizer(SRF)has been widely used in lotus cultivation as new type of fertilizer instead of traditional nitrogen ***,the optimal amount of SRF and how it would promote lotus rhizome quality remain *** study was designed to investigate the photosynthetic characteristics and the synthesis,accumulation,and physicochemical properties of lotus rhizome starches under six SRF levels(CK,S1,S2,S3,S4,and S5).Compared with CK(0 kg ha^(–1)),the net photosynthetic rate(P_(n))and SPAD values of leaves remained at higher levels under SRF *** research showed that SRF increased the lotus rhizome yield,the contents of amylose,amylopectin,and total starch,and the number of starch *** the six SRF levels,S3(1035 kg ha^(–1))showed the greatest difference from CK and produced the highest *** the increasing SRF levels,the peak,hot and final viscosities decreased at first and then increased,but the setback viscosity and pasting temperature *** order to interpret these changes at the molecular level,the activities of key enzymes and relative expression levels of starch accumulation related genes were *** of these parameters also increased under SRF treatment,especially under the S3 *** results of this study show that SRF,especially S3(1035 kg ha^(–1)),is a suitable fertilizer option for lotus planting which can improve lotus rhizome quality by affecting starch accumulations related enzymes and *** results will be useful for SRF application to high-quality lotus rhizome production with low environmental costs.