Enhancement of Yield, Grain Quality Characters, 2-Acetyl-1-Pyrroline Content, and Photosynthesis of Fragrant Rice Cultivars by Foliar Application of Paclobutrazol
文献类型： 外文期刊
作者： Xing, Pipeng 1 ; Duan, Meiyang 1 ; Liu, Yanhua 1 ; Mo, Zhaowen 1 ; Lai, Rifang 1 ; Tang, Xiangru 1 ;
作者机构： 1.South China Agr Univ, State Key Lab Conservat & Utilizat Subtrop, Guangzhou 510642, Peoples R China
2.Minist Agr, Sci Observing & Expt Stn Crop Cultivat South Chin, Guangzhou 510642, Peoples R China
3.Guangzhou Key Lab Sci & Technol Aromat Rice, Guangzhou 510642, Peoples R China
关键词： Fragrant rice; 2-Acetyl-1-pyrroline; Paclobutrazol; Photosynthesis; Grain yield
期刊名称：JOURNAL OF PLANT GROWTH REGULATION （ 影响因子：4.64； 五年影响因子：4.469 ）
ISSN： 0721-7595
年卷期：
页码：
收录情况： SCI
摘要： Paclobutrazol is a well-known plant growth regulator. However, the application of paclobutrazol in fragrant rice production has not been reported. The present study conducted a field experiment with two cropping seasons and three fragrant rice cultivars to investigate the effects of paclobutrazol application on yield formation, grain quality, 2-acetyl-1-pyrroline (2-AP, key component of fragrant rice aroma) biosynthesis, and photosynthesis of fragrant rice. At the initial heading stage, paclobutrazol solutions at 0 (control), 30, 60, 100, and 120 mg L-1 were foliar applied to fragrant rice plants, respectively. Compared with control, paclobutrazol treatments significantly (P < 0.05) increased grain yield and seed-setting rate of fragrant rice cultivars by 6.77-22.82% and 5.09-25.66%, respectively. Increased contents of photosynthetic pigments (chlorophyll a, chlorophyll b, and carotenoid) and the improved net photosynthetic rate at the grain-filling stage were observed due to paclobutrazol treatments. The paclobutrazol application increased head rice rate and grain 2-AP content by 3.94-8.94% and 6.47-18.80%, respectively. Lower chalky rice rate and chalkiness were recorded in paclobutrazol treatment than in control. Moreover, foliar application of paclobutrazol increased proline and Delta 1-pyrroline contents in fragrant rice by 7.90-32.12% and 13.21-34.90%. Overall, foliar application of paclobutrazol could enhance productivity, improve grain quality, and increase the 2-AP content of fragrant rice, and 100-120 mg L-1 was considered the suggested concentration of paclobutrazol application in fragrant rice production.
- 相关文献
作者其他论文 更多>>
-
Optimization of Greenhouse Structure Parameters Based on Temperature and Velocity Distribution Characteristics by CFD-A Case Study in South China
作者：Wei, Xinyu;Li, Bin;Wei, Xinyu;Ou, Yizhi;Li, Ziwei;Guo, Jiaming;Lu, Enli;Liu, Yanhua;Yang, Fengxi
关键词：South China greenhouse; CFD; porous medium; structure parameters; temperature; velocity
-
Two APETALA2/ETHYLENE RESPONSE FACTORS coordinately with CaMYC2 positively regulate capsaicinoid biosynthesis in pepper ( Capsicum annuum)
作者：Song, Jiali;Liu, Renjian;Chen, Guoju;Lei, Jianjun;Ning, Zuoyang;Xu, Xiaowan;Chen, Muxi;Cao, Bihao;Chen, Changming;Zhu, Zhangsheng;Chen, Guoju;Lei, Jianjun;Chen, Muxi;Cao, Bihao;Chen, Changming;Zhu, Zhangsheng;Lei, Jianjun;Tang, Xiangru;Xu, Xiaowan;Chen, Muxi
关键词：Capsicum; Specialized metabolites; Pungency; Transcription factor; AP2/ERF; MYC
-
Dynamic Energy Use Efficiency, Carbon Input, and Agricultural Benefits of Multiple Cropping in Southern China-A Case Study from Guangdong Province
作者：Zhang, Tantan;Deng, Siying;Qing, Bowen;Li, Wu;Mo, Zhaowen;Li, Yanhong;Li, Wu;Li, Wu;Mo, Zhaowen;Mo, Zhaowen
关键词：multiple cropping; energy input; energy output; carbon input; economic return
-
Foliar Application of Silica Nanoparticles Positively Influences the Early Growth Stage and Antioxidant Defense of Maize Under Low Light Stress
作者：Li, Guangyu;Ma, Ziwei;Zhang, Nan;Li, Meng;Mo, Zhaowen;Li, Guangyu;Ma, Ziwei;Li, Meng;Li, Wu;Li, Wu
关键词：Antioxidant response; Growth; Nitrogen metabolism; Photosynthetic pigments; Silica nanoparticles
-
Ultrasonic seed treatment improved seed germination, growth, and yield of rice by modulating associated physio-biochemical mechanisms
作者：Huang, Suihua;Duan, Meiyang;Xing, Pipeng;Tang, Xiangru;Huang, Suihua;Ashraf, Umair;Ren, Yong;Yan, Zhuosheng
关键词：Aromatic rice; Ultrasound; Hormones; Antioxidants; Physiology
-
An Internet of Things-Based Cluster System for Monitoring Lactating Sows' Feed and Water Intake
作者：He, Xinyuan;Zeng, Zhixiong;Liu, Yanhua;Lyu, Enli;Xia, Jingjing;Zeng, Zhixiong;Lyu, Enli;Luo, Yizhi;Xia, Jingjing;Wang, Feiren;Wang, Feiren;Luo, Yizhi
关键词：lactating sow; intelligent feeding; cluster system; IoT platform
-
Distribution Characteristics and Prediction of Temperature and Relative Humidity in a South China Greenhouse
作者：Wei, Xinyu;Guo, Jiaming;Dong, Zhaojie;Lu, Enli;Liu, Yanhua;Wei, Xinyu;Li, Bin;Lu, Huazhong;Guo, Jiaming;Lu, Enli;Liu, Yanhua;Yang, Fengxi
关键词：temperature; relative humidity; ventilation; cooling efficiency; Venlo greenhouse
