Characteristics of P accumulation and distribution at the maturity stage of Brassica Napus varieties with different phosphorus use efficiency for grain production

ABSTRACT

Phosphorus (P) is one of nutrients essential for plant growth. The differences in P content, accumulation, and distribution among 98 rapeseed (Brassica napus) varieties with different P use efficiency for grain production (PUEg) were studied. The results showed that there were highly significant differences in P contents of the whole plant and various organs among different rapeseed varieties. Furthermore, PUEg had significantly negative correlations with P accumulations in whole plant, stems, shells, and seeds. The correlation analysis showed that the correlation coefficient of PUEg and P distribution ratio in stems was smaller, and it was significantly negatively correlated in shells, while it showed highly positive correlations in seeds. It indicated that P content in rapeseed plant stems and shells appeared to be transported into seeds to increase P distribution in seedpods at the late maturity stage, which could help improve PUEg.

KEYWORDS:

• Phosphorus content
• P accumulation
• phosphorus distribution

Funding

We thank the Innovative Group Grant of National Natural Science Foundation of China (No. 31000685), a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), the Three New Project of Agricultural Machinery in Jiangsu Province (NJ2015 – 26, NJ2014 – 28), and Postdoctoral Fund Project of Jiangsu Province (1402027B).

Conflict of interest

The authors have no conflict of interest to declare.