Effect Of Arsenic And Phosphorus On Pteris Vittata And The Manganese Accumulation Characteristic Of Callipteris Esculenta (Retz.) J.Sm

Effect of arsenic and phosphorus on gametophytes of Pteris vittata under aseptic condition, phosphorus absorption characteristic of potted Pteris vittata and manganese absorption characteristic of potted Callipteris esculenta were studied . Main results were as follows:1. Rhizoid distribution of Pteris vittata gametophytes was enlarged by higher arsenic concentration, which was not less than 100mg/kg. Spore germination was accelerated, and prothallium area was increased in 900mg P/L treatment. Rhizoid distribution was enlarged by low arsenic concentration in the condition of the highest phosphorus concentration (1500mg/L).2. Pteris vittata Biomass was positively correlative to phosphorus in the condition of phosphorus addition, which was not higher than 250mg/kg soil, but biomass was negatively correlative to phosphorus in the condition of phosphorus addition, which was higher than 250mg/kg soil. Phosphorus concentration mainly existed in pinna, and pinna phosphorus concentration, more than 30g/kg, was more than other common plant's. Furthermore, Pteris vittata can survive in the condition of few phosphorus culture medium.3. Callipteris esculenta manganese concentration was increased with manganese increasing. Trophylles manganese concentration was highest, up to 2510.3mg/kg, 9 times higher than lygodium. Manganese bioconcentration factor was significantly enhanced by manganese, whose addition was more than 500mg/kg, and furthermore, little seedling numbers on root were increased by manganese.4. Callipteris esculenta manganese concentration was decreased with potassium addition, when Mn addition is more than 300mg/kg, however, plant potassium concentration was effected slightly with manganese addition. Sporophylles and root magnesium concentration were decreased with manganese addition.In a word, gametophyte rhizoid distribution was enlarged by arsenic. Arsenic harm to gametophyte was decreased by high phosphorus concentration. Phosphorus concentration mainly existed in pinna, and pinna phosphorus concentration was higher than common plant. Furthermore, Callipteris esculenta can accumulate more manganese, and manganese concentration was decreased with potassium addition, but potassium concentration was effected slightly with manganese addition.