| Effects of 6-benzylaminopurine on stomatal characteristics, dry matter distribution, and tuber yield of potato |
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| DOI：10.7606/j.issn.1000-7601.2026.01.08 |
| Key Words: potato 6-benzylaminopurine (6-BA) stomatal characteristics dry matter distribution tuber yield |
| Author Name | Affiliation | | WANG Jinyu | College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China
State Key Laboratory of Arid Land Crop Science, Lanzhou, Gansu 730070, China | | LIU Juan | College of Water Conservancy and Hydropower Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | YANG Hongyu | College of Horticulture, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | ZHANG Zhongfu | Seed Industry Development Center of Shandan County, Zhangye City, Zhangye, Gansu 734100, China | | CHENG Lixiang | State Key Laboratory of Arid Land Crop Science, Lanzhou, Gansu 730070, China | | YU Bin | State Key Laboratory of Arid Land Crop Science, Lanzhou, Gansu 730070, China |
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| Abstract: |
| The effects of different concentrations of 6-benzylaminopurine (6-BA) on leaf stomatal characteristics, dry matter distribution, and yield of potato were investigated to provide a basis for the effective use of exogenous hormones to promote potato production. The potted potato variety ‘Favorita’ in an artificial climate chamber was used as material, and 0 (CK), 15, 25 mg·L-1, and 35 mg·L-1 6-BA foliar spraying treatments were set up, respectively. Leaf stomatal characteristics, plant growth, and physiological indexes were observed at different growth stages. After harvest, dry matter distribution and yield formation factors were analyzed. The results showed that compared with CK, the indexes of potato were improved and promoted under 15 mg·L-1 6-BA treatment. Among them, the stomatal density of adaxial and abaxial surfaces of leaves increased significantly by 27.36% and 3.24%, respectively. The relative water content and transpiration rate of leaves increased by 6.32% and 2.75%, respectively. The distribution proportion of dry matter in tubers, yield per plant, number of tubers per plant, and the fresh mass of tubers increasred by 9.33%, 40.49%, 20.09%, and 17.31%, respectively. Correlation analysis indicated that the stomatal density of adaxial and abaxial surfaces of leaves was significantly positively correlated with the number of tubers per plant (P<0.05). In conclusion, a favorable concentration of exogenous 6-BA treatment could significantly increase the stomatal density of potato leaves, the proportion of dry matter in tubers, and tuber yield, and the optimal concentration was 15 mg·L-1. |
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