作物学报2024，Vol.50Issue(9)：2347-2357,11.DOI:10.3724/SP.J.1006.2024.42006
种植季节对高直链淀粉水稻品种淀粉消化特性的影响
Effects of planting season on digestive characteristics of high amylose content rice
摘要
Abstract
To elucidate the effects of planting season on the digestive properties of high amylose content rice,six rice cultivars with high amylose content were cultivated in both the early and late seasons in 2020 and 2021.The differences in starch digestion characteristics between early and late-season rice were investigated by the in vitro digestion simulation method combined with meteorological data.The results showed that the average temperature and radiation of high amylose rice in the early season in-creased by 16.1%and 10.1%,respectively,compared to the late season.Moreover,compared to the late-season planting,the total glucose production(TGP)and glucose production rate(GPR)decreased by 4.1%and 10.0%,respectively,while active digestion duration(ADD)increased by 7.8%.Additionally,compared to late-season planting,early-season planting resulted in a 3.1%in-crease in amylose content and an 8.5%decrease in protein content.The peak viscosity,through viscosity,breakdown value,final viscosity,consistency viscosity,and pasting temperature of the rice RVA spectrum increased by 34.4%,29.7%,51.6%,26.2%,20.6%,and 1.3%,respectively,while the setback value decreased by 2.6%.Correlation analysis revealed that GPR showed nega-tive correlations with grain amylose content,peak viscosity,minimum viscosity,and final viscosity,with correlation coefficient values of-0.429,-0.558,-0.662,and-0.439,respectively.However,GPR exhibited a highly positive correlation with protein content,with a correlation coefficient of 0.565.Amylose content,peak viscosity,and minimum viscosity showed positive correla-tion with the daily mean temperature and daily mean solar radiation during grain filling.The final viscosity showed a positive correlation with the average daily temperature during the grain-filling period.In conclusion,compared to late-season planting,early-season planting of high amylose rice varieties resulted in increased daily average temperature and daily average solar radia-tion during the filling period,leading to increased amylose content,peak viscosity,minimum viscosity,and final viscosity,as well as a decrease in protein content,which further contributed to a slower starch digestion rate.The results of this study provide a theoretical basis for the cultivation regulation of starch digestion speed of high amylose rice varieties.关键词
高直链淀粉水稻/种植季节/消化特性/平均温度/太阳辐射Key words
high amylose content rice/cropping season/digestive characteristics/average temperature/solar radiation引用本文复制引用
胡丽琴,肖正午,方升亮,曹放波,陈佳娜,黄敏..种植季节对高直链淀粉水稻品种淀粉消化特性的影响[J].作物学报,2024,50(9):2347-2357,11.基金项目
本研究由国家重点研发计划项目(2023YFD2301303)和财政部和农业农村部国家现代农业产业技术体系建设专项(水稻,CARS-01)资助.This study was supported by the National Key R&D Program of China(2023YFD2301303)and the China Agriculture Research System of MOF and MARA(Rice,CARS-01). （2023YFD2301303）
