Relationship Between Microstructure of Episperm, Seedling Characters and Evolution of Six Wild Species of Iris
An observation was made on microstructure of seed coat and seedling characters of six wild species in northeast China, namely Iris ensata, I. Sanguinea, I. Typhifolia, I. Pseudaeorus, I. Laevigata, and I. Lacteal. The relationship between the microstructure of seed coat, seedling characters and evolution of the six species of Iris was studied. Results show that wide mums, deep mesh and pits are more evolutionary than carinate mums and shallow mesh in the microstructure of episperm. It is concluded that the sequence from origin to evolution is I. Sanguined, I. Typhifolia, I. Laevigata, I. Pseudaeorus, Iris ensata, and /. Lacteal. Seedlings with ligular sheath are evolutionary. The conclusion from seedling structure is coincident with the observation result of episperm by electron microscope.
NETL
NSTL
万方数据
维普
