Study on the growth and changes of several physiological indexes of potato plantlets in vitro under low phosphorus stress
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.
potatoplantlet in Vitrolow-phosphorus stressphysiological index
国家科技期刊平台
NSTL
万方数据
维普
