Amylose Content and Starch Granule Size in Rice Grains are Affected By Growing Season

作     者：Hengdong Zhang Min Huang Yingjuan Wei Jiana Chen ShuanglüShan Fangbo Cao Guanghui Chen Yingbin Zou 

作者机构：Crop and Environment Research Center for Human HealthCollege of AgronomyHunan Agricultural UniversityChangsha410128China Hunan Agricultural Product Processing InstituteChangsha410125China 

出 版 物：《Phyton-International Journal of Experimental Botany》 (国际实验植物学杂志（英文）)

年 卷 期：2019年第88卷第4期

页      面：403-412页

核心收录：

学科分类：0710[理学-生物学] 1002[医学-临床医学] 1001[医学-基础医学(可授医学、理学学位)] 09[农学] 0901[农学-作物学] 0703[理学-化学] 0902[农学-园艺学] 

基　　金：This work was supported by the National Key R&D Program of China(2016YFD0300509) the Earmarked Fund for China Agriculture Research System(CARS-01) 

主　　题：Amylose content growing season rice variety starch granule 

摘      要：Amylose content and starch granule size in grains influence rice quality,which differs between the early(ES)and late season(LS).The objective of this study was to determine the variation of amylose content and starch granule size between seasons and find the main reasons(e.g.,temperature and solar radiation)for the observed *** experiments with six rice varieties(three high and three low amylose content rice)planted in the ES and LS were conducted in 2016 and 2017,*** mean temperatures during the filling stage were higher in ES,however,the daily temperatures at 7-10 days after flowering(DAF)in 2016,and at 5-10,13-14 DAF in 2017 were higher in *** results showed that amylose content in LS was lower than in ES with high amylose content rice varieties(HACV);the opposite trend occurred with low amylose content rice varieties(LACV).The mean starch granule diameter was higher in LS than ES in 2016,but the opposite result occurred in 2017 with all *** results suggest that higher temperatures increased and decreased the amylose content in HACV and LACV,*** at 5-15 DAF were important for the formation of starch granules:lower temperatures during 10-14 DAF increased the proportion of larger starch granules(d6.21μm,some with d13.3μm),and higher temperatures at 5-6 DAF increased the proportion of starch granules with diameter 4.24-6.21μm.