| Study on the growth and changes of several physiological indexes of potato plantlets in vitro under low phosphorus stress |
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| DOI：10.7606/j.issn.1000-7601.2009.05.33 |
| Key Words: potato plantlet in Vitro low-phosphorus stress physiological index |
| Author Name | Affiliation | | ZHAO Yingqin | College of Agronomy Gansu Agricultural University, Lanzhou, Gansu 730070, China | | LIU Yuhui | Gansu Key Laboratory of Crop Genetic ＆Germplasm Enhancement, Lanzhou, Gansu 730070, China | | WANG Li | Gansu Key Laboratory of Crop Genetic ＆Germplasm Enhancement, Lanzhou, Gansu 730070, China；College of Life Sciences and Technology Gansu Agricultural University, Lanzhou, Gansu 730070, China | | YANG Hongyu | College of Agronomy Gansu Agricultural University, Lanzhou, Gansu 730070, China；Gansu Key Laboratory of Crop Genetic ＆Germplasm Enhancement, Lanzhou, Gansu 730070, China | | ZHANG Junlian | College of Agronomy Gansu Agricultural University, Lanzhou, Gansu 730070, China；Gansu Key Laboratory of Crop Genetic ＆Germplasm Enhancement, Lanzhou, Gansu 730070, China | | WANG Di | College of Agronomy Gansu Agricultural University, Lanzhou, Gansu 730070, China；Gansu Key Laboratory of Crop Genetic ＆Germplasm Enhancement, Lanzhou, Gansu 730070, China |
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| Abstract: |
| Potato plantlets in vitro were cultured on MS medium with full phosphorus level, 60% phosphorus level and 30% phosphorus level.Physiological indexes on 20 d and 40 d were determined and the results showed that the ability of new leaves and lateral root generation was promoted under low-p stress, which could also improve the root growth, increase the fresh weight of aboveground and underground slightly.Under the culture environment with 30% phosphorus, the relative permeability of cell membrane, soluble protein content and soluble sugar content increased and chlorophyll content decreased significantly compared with the control, and the significant difference was at the level of 5% or 1%.Under the treatment with 60% phosphorus, the changes of physiological indexes were the same as the control, and there was no obvious difference.The results demonstrated that it is suitable for potato plantlets in vitro growth on MS medium with 60% phosphorus. |
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