马铃薯响应磷胁迫机制及磷高效利用育种

无机磷是马铃薯生长和块茎发育必需的大量营养元素,广泛参与了遗传物质和生物膜的构成、能量转化以及代谢调控等过程,对马铃薯茎叶生长和块茎发育起着重要的作用.土壤的磷含量会明显影响马铃薯的发育,且在不同遗传特性的马铃薯品种间存在磷效率差异.为了保证马铃薯的正常生长和产量的稳定,磷肥在马铃薯种植业中被大量使用.然而,磷肥的过量...

Mechanism of Potato Response to Phosphorus Stress and High-efficiency Phosphorus Breeding

Inorganic phosphorus is an essential nutrient element for potato growth and tuber development.It is widely involved in the formation of genetic material and biofilm,energy transformation and metabolic regulation,playing an important role in the growth of potato stem,leaf and tuber.The phosphorus status of soil can obviously affect normal development of potato,and there are differences in phosphorus efficiency among potato varieties with different genetic characteristics.At present,phosphate fertilizer is widely used to ensure the normal growth and maintain the stability of potato yield.However,the excessive use of phosphate fertilizer has already contributed some potential threat to the environment and human health.With the continuous improvement of environmental and food safety standards in China,it is well urgent to effectively solve this problem.Therefore,making full use of potato genetic characteristics to improve the utilization rate of inorganic phosphorus is an effective method to maintain tuber yield,save planting cost and reduce environmental impact.Numerous related researches at home and abroad about the mechanism of potato phosphorus transport and response to low-phosphorus growth are reviewed,with a goal to providing scientific strategy for further researches on its transportation mechanism and breeding high-efficient phosphorus utilization varieties of potato.