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Enhancement of Yield,Grain Quality Characters, 2-Acetyl-1-Pyrroline Content,and Photosynthesis of Fragrant Rice Cultivars by Foliar Application of Paclobutrazol |
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| Authors: | Xing Pipeng Duan Meiyang Liu Yanhua Mo Zhaowen Lai Rifang Tang Xiangru |
| Affiliation: | 1.State Key Laboratory for Conservation and Utilization of Subtropical Agricultural Bioresources, South China Agricultural University, Guangzhou, 510642, People’s Republic of China ;2.Scientific Observing and Experimental Station of Crop Cultivation in South China, Ministry of Agriculture, Guangzhou, 510642, People’s Republic of China ;3.Guangzhou Key Laboratory for Science and Technology of Aromatic Rice, Guangzhou, 510642, People’s Republic of China ; |
| Abstract: | 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??1 was considered the suggested concentration of paclobutrazol application in fragrant rice production. |
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