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Table 5 Linkage analysis between blast resistance and the Pi2/9 haplotypes in introgression lines

From: Identification of resistant germplasm containing novel resistance genes at or tightly linked to the Pi2/9 locus conferring broad-spectrum resistance against rice blast

Isolates

BC3F2 population

Number of progenies

Chi-square test

Number of susceptible progenies using Pi2/9-RH

R

S

Total

Expected ratio (R:S)

χ2

P

Positive

Negative

MO15–21

CO39/A15

550

170

720

3:1

0.741

0.389

0

170

MO15–21

CO39/A42

433

30

463

15:1

0.042

0.838

0

30

5167–1

CO39/A53

571

195

766

3:1

0.085

0.770

0

195

  1. R resistance, S susceptibility