Summary
Restriction fragment length polymorphisms (RFLP) were assessed among accessions within six peanut species of the Arachis section: tetraploid cultivated species, A. hypogaea; tetraploid wild species, A. monticola; and four diploid wild species, A. batizocoi,A. cardenasii, A. duranensis and A. glandulifera. While the two tetraploid species did not show polymorphism with 16 PstI-generated random genomic probes, two of seven seed cDNA probes detected polymorphisms. The RFLP variation detected by two seed cDNA probes appeared to be related to structural changes occurring within tetraploid species. The botanical var. ‘fastigiata’ (Valencia market type) of A. hypogaea subspecies fastigiata was shown to be the most variable. Arachis monticola was found to be more closely related to A. hypogaea subspecies hypogaea than to subspecies fastigiata. Diploid species A. cardenasii, A. duranensis, and A. glandulifera showed considerable intraspecific genetic diversity, but A. batizocoi showed little polymorphism. The genetic distance between the cultivated peanut and wild diploid species was found to be closest for A. duranensis.
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Communicated by P. L. Pfahler
Florida Agricultural Experiment Station, Journal Series No. R-01493
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Paik-Ro, O.G., Smith, R.L. & Knauft, D.A. Restriction fragment length polymorphism evaluation of six peanut species within the Avachis section. Theoret. Appl. Genetics 84, 201–208 (1992). https://doi.org/10.1007/BF00224001
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DOI: https://doi.org/10.1007/BF00224001