The Filtering of Rice Resistance and Population Buildup to Determine Antibiosis and Tolerance as Characteristics of Rice Resistance to Brown Planthopper Biotype 3

摘要

Control to rice brown planthopper (BPH) using resistance rice varieties is an economically way, although to obtain the rice resistant needed four stages those are seedbox mass screening, filtering of resistant lines, population buildup of BPH, and field test of resistant lines. The research of filtering of resistant lines/varieties and population buildup of BPH were conducted at the screen house of Indonesian Center for Rice Research (ICRR). The result of filtering activity showed that BP4724-1f-Kn-15-2-2*B, BP 4724-1f-Kn-15-3- 2*B, BP4138-5f-Kn-23-3-3*B, BP 4920F-BB8-2-BB4 (DHP-MT1-08-38), PK68 (SH133), Barumun, Rathu Heenati, PTB33, and Pokkali were moderately resistant to BPH biotype 3, whereas ASD7 and TN1 were susceptible and highly susceptible respectively. In the populatio n buildup activity showed that BPH biotype 3 population was quite high on BP-15-2-2 4724-1f-Kn*B and susceptible variety TN1, while on BP4138-5f-Kn- 23-3-3*B, PK68, DHP-MT1-08-38, Pokkali, and Barumun were low population. BP4138-5f-Kn-23-3-3*B and DHP-MT1-08-38 have antibiosis, but tolerance absent to BPH biotype 3. Pokkali and Barumun have both antibiosis and tolerance to BPH biotype 3. The lines of BP4724-1f-Kn-15-3-2*B, BP4724-1f-Kn-15-2-2*B, and PK68 did not had resistance of antibiosis, but tolerance present to BPH biotype 3. In the other hand TN1 and ASD7 absent both antibiosis and tolerance to BPH biotype 3. All lines resistant by antibiosis, tolerance or both can be continued for the proposed to release resistant rice varieties to BPH biotype 3, after was equipped by the others properties such as productivity, rice quality, and the data morphological rice performance.