Effects of drought stress on growth and Mn, Zn, Cu and P uptake by maize (Zea mays L. ) plant colonized by AM fungi
The effect of mycorrhizal colonization and drought stress on growth and uptake of Mn, Zn, Cu and P by maize plant was studied in a pot experiment. The experiment had a randomized complete block design with three replications. The treatments (2 mycor- rhiza ×4 drought stress levels ×3 P applications) were arranged in factorial combination. The results indicated that the growth of maize plant decreased as drought stress was increased. However, shoot and root dry weights of mycorrhizal plant were signifi-cantly greater than those of non-mycorrhizal plants at all levels of drought stress. The percentage of root length colonized de-creased as drought stress was increased. This led to decline in beneficial effect of mycorrhizal colonization in terms of plant growth and nutrient uptake. The concentration of Zn, Cu and P in plant tissue increased with increase in drought stress. This in-crease was significantly greater for mycorrhizal plants than for non- mycorrhizal plant The concentration of in mycorrhizal plant waslower than that in non-mycorrhizal plant. The greatest beneficial effect of mycorrhizal colonization was observed when the soil supplied with 10 mg (P)·kg<1> soil.
Copper drought stress maize manganese mycorrhizal colonization zinc
H. Nadian S. Jafari
Department of Soil Science, Faculty of Agriculture, Ramin University of Agriculture and Natural Resources, Mollasani, Khozestan, Iran
国际会议
第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)
北京
英文
546-547
2007-07-15（万方平台首次上网日期，不代表论文的发表时间）