A pot trial was conducted to clarify the effect of different phosphorus (P) levels on the growth, P and arsenic (As) absorption of Pefficient rice 99011 and Pinefficient rice 99056 under As stress conditions. P was applied at three rates (0, 30 and 150 mg/kg) and As at five rates (0, 25, 50, 100 and 200 mg/kg) in soil. Results showed that application of As increased shoot and root As concentration and decreased plant height, tiller number, shoot and root dry weight of the two rice varieties. Application of P increased the growth as well as the root As concentration of the two rice varieties. At 25 mg/kg and 50 mg/kg of As in soil, application of 30 mg/kg P decreased the translocation of As from roots to shoots and application of 150 mg/kg P increased the translocation of As from roots to shoots of the two rice varieties. Under the same treatment, shoot and root dry weight of Pefficient rice 99011 were significantly higher than those of Pinefficient rice 99056. Under the As treatment, the translocation factor of As in Pinefficient rice 99056 minimized at 30 mg/kg P treatment.
LIAN Juan, GUO Zaihua*, HE Liyuan
. Effect of Different P Levels on the Growth, P and As Absorption of Different Pefficiency Rice Varieties under As Stress Conditions at Seedling Stage[J]. Chinese Journal OF Rice Science, 2013
, 27(3)
: 273
-279
.
DOI: 10.3969/j.issn.10017216.2013.03.007
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