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Not AvailablePeanut is grown extensively in different parts of world, where various biotic and abiotic factors limit its
productivity and quality. The major fungal biotic constraints to peanut production include rust (Puccinia
arachidis Speg.), stem-rot (Sclerotium rolfsii), collar-rot (Aspergillus niger Van Teighem), afla-root (Aspergillus
flavus), and late leaf spot (Phaeoisariopsis personata Ber. and M A Curtis), while viral disease constraints
are peanut bud necrosis disease (PBND) caused by peanut bud necrosis virus (PBNV) and peanut
stem necrosis disease (PSND) caused by tobacco streak virus (TSV). Since, only a few sources of resistance
are available in cultivated peanut for some diseases, which has resulted in the limited success of conventional
breeding programmes on disease resistance. Moreover, even marker assisted breeding in
peanut is in the nascent stage and identification of some major quantitative trait loci (QTLs) for a few
fungal disease resitance genes has only recently been reported. Substantial efforts are underway to
develop PCR-based markers for the construction of high-density genetic linkage maps. This will enable
the breeders to effectively pyramid various biotic stress resistance genes into different agronomically
superior breeding populations, in a much shorter time. It is expected that the availability of various costeffective
genomic resources (SNPs, whole genome sequencing, KASPar, GBS etc.) and more effective
mapping populations (NAM, MAGIC etc.) in the coming years will accelerate the mapping of complex
traits in peanut. This review provides an overview of the current developments and future prospects of
molecular marker development and their applications for improving biotic-stress resistance in peanut
crop.Not Availabl