Differences on dissecting structure of rice grain dorsal vascular bundle nutrients entering tissue were studied under optical microscope.

Characteristics of the vascular bundles in the panicle and their relations to the grain-filling for the different panicle types of rice;

The relations between panicle characters of intersubspecific heavy panicle hybrid rice and vascular bundles in neck panicle;

Correlation between the structure of vascular bundle and the content of aloin in Aloe;