The oil palm is badly affected by basal stem rot (BSR) disease in Southeast Asia. BSR disease is caused by the fungus Ganoderma boninense, which is a major threat to oil palm compared with other Ganoderma spp. Molecular markers associated... more
The oil palm is badly affected by basal
stem rot (BSR) disease in Southeast Asia. BSR disease
is caused by the fungus Ganoderma boninense, which
is a major threat to oil palm compared with other
Ganoderma spp. Molecular markers associated with
BSR disease will accelerate the identification process
of resistant breeding materials in screening of plants
for tolerance to the disease at the nursery stage. In this
study, 58 simple sequence repeat markers were
utilized with three progeny types, namely, KA4G1,
KA4G8, and KA14G8, to perform a comparative
molecular mapping for association with BSR. A total
of 319 alleles were identified with an average of 5.51
alleles per locus. Five markers, mEgCIR0793:180,
mEgCIR0894:200, mEgCIR03295:210, mEg-
CIR3737:146 and mEgCIR3785:299 were found to
be associated with Ganoderma disease with P values
of 0.018, 0.033, 0.037, 0.034 and 0.037, respectively,
in single progeny analysis. However, in pooled data
(KA4G1, KA4G8 and KA14G8), only two alleles,
mEgCIR0804:213 (P value = 0.001) and mEg-
CIR3292:183 (P value = 0.001), were found to be
associated with Ganoderma disease. These analyses
confirmed that progeny type KA4G1 was tolerant,
whereas the other two were susceptible progeny types.
These markers and KA4 progeny will be useful in
future works on BSR disease resistance in oil palm.
stem rot (BSR) disease in Southeast Asia. BSR disease
is caused by the fungus Ganoderma boninense, which
is a major threat to oil palm compared with other
Ganoderma spp. Molecular markers associated with
BSR disease will accelerate the identification process
of resistant breeding materials in screening of plants
for tolerance to the disease at the nursery stage. In this
study, 58 simple sequence repeat markers were
utilized with three progeny types, namely, KA4G1,
KA4G8, and KA14G8, to perform a comparative
molecular mapping for association with BSR. A total
of 319 alleles were identified with an average of 5.51
alleles per locus. Five markers, mEgCIR0793:180,
mEgCIR0894:200, mEgCIR03295:210, mEg-
CIR3737:146 and mEgCIR3785:299 were found to
be associated with Ganoderma disease with P values
of 0.018, 0.033, 0.037, 0.034 and 0.037, respectively,
in single progeny analysis. However, in pooled data
(KA4G1, KA4G8 and KA14G8), only two alleles,
mEgCIR0804:213 (P value = 0.001) and mEg-
CIR3292:183 (P value = 0.001), were found to be
associated with Ganoderma disease. These analyses
confirmed that progeny type KA4G1 was tolerant,
whereas the other two were susceptible progeny types.
These markers and KA4 progeny will be useful in
future works on BSR disease resistance in oil palm.
