Maize growth and phosphorous- and zinc uptake under different phosphorous supply levels
Zhang, F.; Kang, S.; Gong, D.; Li, Z.
Ying Yong Sheng Tai Xue Bao 16(5): 903-906
2005
ISSN/ISBN: 1001-9332 PMID: 16110668 Document Number: 594651
By the method of solution culture, this paper studied the P and Zn uptake of maize at its growth stages under different P supply levels. The results showed that maize growth reached its maximum at the supply level of 100 micromol P.L(-1), while the root/shoot ratio was the highest at 0.1 micromol.L(-1) P supply. Increase of P concentration in culture solution promoted the uptake of P, but decreased its utilization rate. The Zn content in root increased with increasing P supply, while that in shoot varied little, which meant that the Zn transportation rate from root to shoot had little change with increasing P concentration. There was a positive correlation between the concentrations of Zn and P in maize seedling roots.