Table 3.
Segregation of the resistance to the brown planthopper in the BC3F2 populations derived from T65 × ADR52
| Population BC3F2 | Target QTL | Number of plantsa | Total plants | χ 2 | Segregation ratio for χ 2b (R:S) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AABB | AABb | AAbb | AaBB | AaBb | Aabb | aaBB | aaBb | aabb | |||||
| 1 | qBPH6 | 9 (S) | – | – | 23 (S) | – | – | 16 (R) | – | – | 48 | 1.7ns | 1:3 |
| 2 | qBPH12 | 7 (S) | 26 (R) | 15 (R) | – | – | – | – | – | – | 48 | 2.7ns | 3:1 |
ns Not significant (at P < 0.05), R resistant, S susceptible
a“A” and “a” indicate the alleles of SSR marker S00310 (chromosome 6) and “B” and “b” indicate alleles of SSR marker RM5479 (chromosome 12). Capital and lower-case letters represent the T65 and ADR52 alleles, respectively
bThe segregation ratio for χ 2 is not significantly different from that in the BC3F2 population