作物学报2025，Vol.51Issue(3)：785-796,12.DOI:10.3724/SP.J.1006.2025.42022
聚-γ-谷氨酸对水稻产量、品质和养分吸收的影响
Effects of poly-γ-glutamic acid on rice yield,quality,and nutrient uptake
摘要
Abstract
This experiment aimed to investigate the effects of poly-γ-glutamic acid(γ-PGA)on rice yield,quality,and nutrient absorption,providing a theoretical basis and technical reference for cultivating rice with high yield,superior quality,and efficient nutrient utilization.The field experiment was conducted in Huaqiao town,Wuxue county,Hubei province,from 2022 to 2023,using a randomized block design.The study included three rice varieties(Heixiandao(B),Gangteyou 8024(R),and Huanghua-zhan(H))and two γ-PGA treatments(no application of γ-PGA fermentation solution(P0)and 25 kg hm-2 γ-PGA fermentation solution(P1)).Dry matter mass,nitrogen accumulation,phosphorus accumulation,yield,appearance quality,grain protein content,and amylose content were analyzed.The results showed that γ-PGA application had a significant effect on rice yield in 2022,with P1 treatments increasing yield by 3.2%-10.8%compared to P0 treatments.However,there was no significant effect on yield in 2023.The dry matter mass of varieties B and R treated with γ-PGA was significantly higher than those without γ-PGA.Compared to BP0,the BP1 treatment significantly increased dry matter mass by 7.5%-8.5%at the full heading stage and by 5.9%-7.2%at the mature stage.Similarly,compared to RP0,the RP1 treatment significantly increased dry matter mass by 8.5%-8.8%at the full heading stage and by 3.3%-3.5%at the mature stage.γ-PGA application had no significant effect on the dry matter mass of vari-ety H.Furthermore,γ-PGA significantly increased nitrogen and phosphorus accumulation.Compared to P0,the P1 treatments increased nitrogen accumulation by 12.5%-19.0%and phosphorus accumulation by 13.4%-20.3%at the full heading stage,and increased nitrogen accumulation by 7.2%-16.5%and phosphorus accumulation by 9.2%-29.0%at the mature stage.γ-PGA application also significantly enhanced amylose and protein content while reducing chalkiness degree and gel consistency,though it had no significant effects on grain length,grain width,or alkali spreading value.In conclusion,the application of γ-PGA sig-nificantly improved dry matter mass,nitrogen and phosphorus accumulation,and rice quality.关键词
水稻/聚-γ-谷氨酸(γ-PGA)/产量/干物质积累/养分吸收Key words
rice/poly-γ-glutamic acid(γ-PGA)/yield/dry matter accumulation/nutrient absorption引用本文复制引用
杨翠华,李诗豪,易徐徐,郑飞雄,杜雪竹,盛锋..聚-γ-谷氨酸对水稻产量、品质和养分吸收的影响[J].作物学报,2025,51(3):785-796,12.基金项目
本研究由湖北省中央引导地方专项项目(2020ZYYD036)和湖北省重点研发计划项目(2021BBA224)资助.This study was supported by the Hubei Provincial Central Leading Local Special Project(2020ZYYD036)and the Key R&D Plan Projects in Hubei Province(2021BBA224). （2020ZYYD036）
