Studies on the biotic Stress Resistance in Rice through Molecular Markers and Six Population Analysis

Rice (Oryza staiva L.) is one of the world's most important crops, providing a stable food for nearly half of the global population (FAO 2004). Almost 90% of the rice is growing and consumed in Asia. The striped stem borer (Chilo suppressalis Walker) is one of the most important rice pests in Asia. Rice stem borers cause damage to the crop at the larval stages. Larvae borer in to the plant stems and feed on plant nutrients causing, in many cases, severe crop loss. Rice plants are most prone to stem borer infestation at the tillering and flowering stages. In a transplanted crop, stem borer larvae cut of the growing points of tillers causing them to die, a condition commonly known as dead heart. When the plants are attacked later, during the International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 4 Number 1 (2015) pp. 831-854 http://www.ijcmas.com