Maize seedling phosphorus nutrition: Allocation of remobilized seed phosphorus reserves and external phosphorus uptake to seedling roots and shoots during early growth stages

摘要: The growth of green plants depends not only on photosynthesis, but also the successful remobilization and translocation seed phosphorus (P) reserves to vegetative parts developing seedling during early growth. Remobilization photosynthesis are therefore two parallel co-coinciding processes involved in better establishment A study was conducted evaluate priority maize seedlings translocate remobilized P external uptake root shoot sinks 4 weeks Two fluxes growing seedlings, one from uptake, were distinguished by labelling nutrient solution with 32P. phytomass equally distributed between roots shoots for 530 cumulated degree days after sowing. Seedlings partitioned up 71 % 68 % acquired solution, shoots, depending content concentration solution. It appears that accumulation slows down corresponds translocative functions towards start photosynthesis. Our results suggest major part used development preferred sink shoots.