Advances in basic theroy of Lespedeza spp.

Some species of Lespedeza genus belong to selffertilizing, and the others are crosspollination. The Lespedeza seeds are very hard. It is need to some treatments to break the hard seeds when seedling, so there are good seedling emergence rate. Most researches about Lespedeza focus on resistance of seed germination and seedlings. It is very few to study the resistance in later growth period. There are fewer study on species, and just focus on a few species. Most Lespedeza plants have important medical value. They can prevent soil erosion and increase income of the local peoples when planting in western arid mountain and soil erosion areas. Based on few research institutions in Lespedeza plants, there is no systemic research and there are fewer studied species, even the technology is relatively backward in China. So it is very important to extend and enhance the cooperation of institutions, strive for more funds input. And further make comprehensive study on Lespedeza plants in order to make great effect on constructing ecological environment, improving degraded grasslands and developing urban economy.