[1]李凡,余恩唯,孙亮,等.不同生育期分时段弱光胁迫对水稻产量、干物质积累与稻米品质的影响[J].江苏农业学报,2026,42(08):1523-1533.[doi:doi:10.3969/j.issn.1000-4440.2026.08.002]
　LI Fan,YU Enwei,SUN Liang,et al.Effects of weak light stress at different growth stages on rice yield, dry matter accumulation and rice quality[J].,2026,42(08):1523-1533.[doi:doi:10.3969/j.issn.1000-4440.2026.08.002]
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不同生育期分时段弱光胁迫对水稻产量、干物质积累与稻米品质的影响()

江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
42
期数:
2026年08期
页码:
1523-1533
栏目:
遗传育种·生理生化
出版日期:
2026-08-31

文章信息/Info

Title:
Effects of weak light stress at different growth stages on rice yield, dry matter accumulation and rice quality
作者:
李凡; 余恩唯; 孙亮; 郭靖豪; 邢志鹏; 郭保卫; 胡雅杰; 张洪程
(扬州大学农学院/江苏省作物栽培生理重点实验室/江苏省粮食作物现代产业技术协同创新中心/江苏省优质粳稻产业工程研究中心,江苏扬州225009)
Author(s):
LI Fan; YU Enwei; SUN Liang; GUO Jinghao; XING Zhipeng; GUO Baowei; HU Yajie; ZHANG Hongcheng
(Agricultural College of Yangzhou University/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Jiangsu Industrial Engineering Research Center of High Quality Japonica Rice, Yangzhou 225009, China)
关键词:
水稻; 弱光胁迫; 干物质积累; 产量; 品质
Keywords:
rice; weak light stress; dry matter accumulation; yield; quality
分类号:
S511
DOI:
doi:10.3969/j.issn.1000-4440.2026.08.002
文献标志码:
A
摘要:
为明确关键生育期不同弱光持续时间和同一生育期不同时段弱光胁迫对水稻产量和品质的影响,本研究以常规粳稻南粳9108和籼粳杂交稻甬优2640为供试材料,于水稻分蘖期、拔节期、灌浆期设置3个持续时间(7 d、14 d、21 d)及同一生育期3个时段7 d的弱光处理,以自然光照作为对照(CK),分析不同弱光处理对水稻产量、干物质积累和稻米品质的影响。结果表明,3个生育期14 d和21 d弱光处理均导致南粳9108和甬优2640产量下降,其中拔节期21 d弱光处理减产幅度最大,南粳9108和甬优2640产量分别比CK降低16.79%和23.04%。随着弱光时间延长,减产幅度越大。分蘖期、拔节期、灌浆期减产的主要原因分别是有效穗数降低、每穗粒数降低、结实率和千粒质量降低。除分蘖期早期和中期7 d弱光处理南粳9108成熟期干物质积累量与CK无显著差异,其他弱光处理2个品种干物质积累量均显著低于CK。其中,拔节期21 d弱光处理南粳9108和甬优2640成熟期干物质积累量分别比CK降低18.20%和23.10%,降幅最大。分蘖期和拔节期弱光处理总体上对2个品种稻米品质影响较小,而灌浆期14 d和21 d弱光处理南粳9108稻米整精米率分比CK降低7.37%和26.49%,甬优2640稻米整精米率分比CK降低7.95%和13.34%。灌浆期21 d弱光处理南粳9108稻米垩白粒率和垩白度均显著降低,而甬优2640稻米垩白粒率和垩白度却显著增加。与CK相比,灌浆期14 d和21 d弱光处理能显著增加南粳9108和甬优2640稻米蛋白质含量,降低直链淀粉含量,同时降低稻米米饭黏度、平衡度及食味值。
Abstract:
To clarify the effects of different weak light durations at key growth stages and different periods of weak light stress at the same growth stage on rice yield and quality, conventional japonica rice Nanjing 9108 and indica-japonica hybrid rice Yongyou 2640 were used as test materials in this study. Weak light treatments with three durations (7 d, 14 d, 21 d) and three periods of 7 d at the same growth stage were set at tillering stage, jointing stage and filling stage of rice, and natural light was used as control (CK) to analyze the effects of different weak light treatments on rice yield, dry matter accumulation and rice quality. The results showed that weak light treatments for 14 d and 21 d at three growth stages led to yield reductions in Nanjing 9108 and Yongyou 2640. The greatest yield reduction occurred under the weak light treatment for 21 d at jointing stage, and the yield of Nanjing 9108 and Yongyou 2640 decreased by 16.79% and 23.04%, respectively, compared with CK. With the prolongation of weak light duration, the yield reduction became greater. The main reasons for yield reduction at tillering stage, jointing stage and filling stage were the decrease of effective panicle number, grain number per panicle, seed setting rate and 1 000-grain weight, respectively. There was no significant difference in dry matter accumulation at maturity stage of Nanjing 9108 under low light treatment for 7 d at early and middle tillering stages compared with CK. However, for all other weak light treatments, the dry matter accumulation of the two varieties was significantly lower than that of CK. Among them, the dry matter accumulations of Nanjing 9108 and Yongyou 2640 treated with low light for 21 d at jointing stage were 18.20% and 23.10% lower than those of CK, respectively, and the decreases were the largest. The low light treatment at tillering stage and jointing stage generally had little effect on the rice quality of the two varieties, while the milled rice rate of Nanjing 9108 treated with low light for 14 d and 21 d at filling stage was 7.37% and 26.49% lower than that of CK, and the milled rice rate of Yongyou 2640 was 7.95% and 13.34% lower than that of CK. The chalky grain rate and chalkiness degree of Nanjing 9108 were significantly decreased under the low light treatment for 21 d at grain filling stage, while the chalky grain rate and chalkiness degree of Yongyou 2640 were significantly increased. Compared with CK, low light treatments for 14 d and 21 d at grain filling stage could significantly increase the protein content of Nanjing 9108 and Yongyou 2640, reduce the amylose content, and reduce the viscosity, balance and taste value of rice.

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备注/Memo

备注/Memo:
收稿日期：2025-08-02基金项目：国家自然科学基金项目(32372213)；国家重点研发计划项目(2022YFD1500404)；国家重点研发计划青年科学家项目(2023YFD2302200)；江苏省研究生实践创新计划项目(SJCX25_2345)作者简介：李凡(2002-),女,甘肃陇南人,硕士研究生,主要研究方向为作物栽培学。(E-mail)Li_fan6688@163.com。余恩唯为共同第一作者。通讯作者：胡雅杰,(Tel)0514-87972069；(E-mail)huyajie@yzu.edu.cn
更新日期/Last Update: 2026-09-16