Nitrogen fertilization coupled with foliar application of iron and molybdenum improves shade tolerance of soybean under maize-soybean intercropping.

Maize-soybean intercropping is practiced worldwide because of some of the anticipated advantages such as high crop yield and better utilization of resources (i.e., water, light, nutrients and land).

[In vitro studies on asexual embryos and regenerated plantlets obtained from leaf organ of Panax notoginseng].

Objective: To study and improve the tissue culture technology of Panax notoginseng.

Method: Using the callus of leaf blade and leafstalk of P. notogingseng as explants, MS + 2, 4-D 1.