|
| Effects of P-efficient transgenic rice (OsPT4) on inorganic phosphorus fractions of fluvo-aquic soil |
| Received:January 27, 2017 |
| View Full Text View/Add Comment Download reader |
| KeyWord:P-efficient transgenic rice;soil total phosphorus;available phosphorus;inorganic phosphorus fractions |
| Author Name | Affiliation | E-mail | | NI Tu | Key Laboratory of Original Agro-Environment Quality, Ministry of Agriculture/Tianjin Key Laboratory of Agro-Environment and Agroproduct Safety, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | | | LI Gang | Key Laboratory of Original Agro-Environment Quality, Ministry of Agriculture/Tianjin Key Laboratory of Agro-Environment and Agroproduct Safety, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | | | XIU Wei-ming | Key Laboratory of Original Agro-Environment Quality, Ministry of Agriculture/Tianjin Key Laboratory of Agro-Environment and Agroproduct Safety, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | | | WEI Lin-lin | Key Laboratory of Original Agro-Environment Quality, Ministry of Agriculture/Tianjin Key Laboratory of Agro-Environment and Agroproduct Safety, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | | | HOU Meng-yao | Key Laboratory of Original Agro-Environment Quality, Ministry of Agriculture/Tianjin Key Laboratory of Agro-Environment and Agroproduct Safety, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China
College of Resource and Environmental Science, Northeast Agricultural University, Harbin 150030, China | | | YANG Dian-lin | Key Laboratory of Original Agro-Environment Quality, Ministry of Agriculture/Tianjin Key Laboratory of Agro-Environment and Agroproduct Safety, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | | | ZHAO Jian-ning | Key Laboratory of Original Agro-Environment Quality, Ministry of Agriculture/Tianjin Key Laboratory of Agro-Environment and Agroproduct Safety, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | zhaojn2008@163.com |
|
| Hits: 2330 |
| Download times: 2241 |
| Abstract: |
| High phosphorus(P)-efficiency rice has great potential to take up phosphorus from soil, which may influence soil inorganic phosphorus fractions. We designed an experiment with a completely random design and two phosphorous application rates(0 and 15 g·m-2) to identify the variation characteristics of inorganic phosphorus fractions in the soil of high P-efficiency transgenic rice(OsPT4), P-efficient mutant rice(PHO2), and non-transgenic parental OsPT4(Nipponbare) in different growing seasons. Under the two phosphorous application rates, no significant difference was observed in total soil phosphorus among OsPT4, PHO2, and Nipponbare during the same growing periods. However, the contents of available phosphorus, inorganic phosphorus, Ca8-P, and Al-P of PHO2 were significantly lower than those of Nipponbare during the corresponding growing period(P<0.05). At the filling stage and maturing stage, the contents of Ca8-P and Al-P of OsPT4 were significantly lower than those of Nipponbare under the same P application rate, and the content of Ca2-P in the soil of OsPT4 was significantly lower than that of Nipponbare under no P application(P<0.05). Under the two treatments, the contents of Ca10-P for OsPT4 showed no significant difference from that of the soil of Nipponbare at the same growing stage(P<0.05). The absorptive capacities for plant-available P fractions(i.e. Ca2-P, Ca8-P, Al-P, and Fe-P) in the soil of high P-efficiency rice were higher than those in the soil of Nipponbare. Planting high P-efficient transgenic rice exerted no significant effect on total soil phosphorus. However, the effects of P-efficient transgenic rice on soil inorganic phosphorus fractions and total phosphorus should be surveyed further, on a longer time scale. |
|
|
|
