FIGURE 6.
Comparison of the growth among 1688, 1654, and 1665. (A) Growth status of 1688 after 30 days of artificial infestation. (B) Growth status of 1654 after 30 days of artificial infestation. (C) Growth status of 1665 after 30 days by artificial infestation. (Method: a third instar larva of striped stem borer was placed onto the stem of rice when the rice seedlings had grown to the tillering stage. When half of the larva body had drilled into a stem of rice, a label that marked the time and tillering was tagged on the stem. After 24 h of this artificial infestation, the leaf sheath in which the tiller with larva was located was split gently and the larva was removed. The plant was then packaged in silver paper and was subsequently frozen in liquid nitrogen and stored at -80°C for later use. The plant without any artificial infestation was similarly sampled and treated).