Ecological Response of Rice Multi-genotype Variety in Dehong,Yunnan Province

Crop genetic diversity is essential for food security and sustainable agricultural development,but the current crop genetic diversity attenuation leads to serious pests and diseases exacerbating.Increasing crop genetic diversity can effectively control and mitigate the problem. Multi-genotype variety is bred by multi-parents advanced generation intercross method (MAGIC hybrid), which can enrich and broaden the genetic diversity from theory and enhance resistance ability and improve yield. In order to evaluate multi-genotype varietys ecological response, this study choosing multi-genotype variety of rice to carry out field experiment between 2013 and 2014 in DeHong Institute of Agricultural Sciences. The results showed that the rice blast severity index is between 2.27 and 4.41, belonging to light occurrence. Bacterial blight severity index is between 0 and 1.21, belonging to lighter occurrence. False smut severity index is between 3.45 and 6.88,belonging to light occurrence. The grain yields had no significant difference with control variety,which shows a better disease resistance and high yield.