Evaluation of common bean cultivar relationships by means of isozyme electrophoretic patterns

Bassiri, A.; Adams, M. W.

doi:10.1007/bf00023706

Cited by 45 publications

(22 citation statements)

References 33 publications

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“…Although this relative activity difference was consistent within cultivars it was not determined whether the weaker activity was a distinct allele at the Est-2 locus or was caused by changes at a regulatory locus . The two groups of esterase bands appear to correspond to those reported by BASSIRI & ADAMS (1978) with Rf = 0 .8 and 0 .65 respectively .…”

Section: Resultsmentioning

confidence: 92%

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Distinguishing among white seeded bean cultivars by means of allozyme genotypes

Weeden

1984

Euphytica

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Allozyme genotypes were determined at 10 loci for 90 cultivars of white seeded snap beans . Within cultivars the loci were homozygous and usually monomorphic, permitting the characterization of most cultivars by a single set of allozymes . A total of 72 allozyme combinations were observed among the cultivars tested, and 52 (58%) of the cultivars could be uniquely distinguished by allozyme genotype alone . The remaining 38 lines could be separated into small groups of 2-5 cultivars each .

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Section: Resultsmentioning

confidence: 92%

“…(1982) were able to distinguish only three phaseolin patterns in 107 cultivars tested . Slightly greater variation has been found in studies using enzyme variants (BASSIRI & ADAMS, 1978) . These authors were able to distinguish between major commercial classes of beans using peroxidase and esterase assays .…”

Section: Introductionmentioning

confidence: 98%

Distinguishing among white seeded bean cultivars by means of allozyme genotypes

Weeden

1984

Euphytica

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“…Isozyme variation in Phaseolus has been used to confirm the hypothesis of multiple domestication of common bean (Sprecher, 1988;Koenig & Gepts, 1989b;Singh et al, 1991c), to evaluate multilocus associations (Gepts, 1989), measure differential elimination of donor parents in crosses (Wall, 1968), measure genetic diversity between genotypes (West & Garber, 1967;Wall & Wall, 1975;Bassiri & Adams, 1978a, 1978bWeeden, 1984b;Sprecher, 1988;Koenig & Gepts, 1989b;Singh et al, 1991c), and identify the organization of common bean gene pool into different races (Singh et al, 1991a).…”

Section: Introductionmentioning

confidence: 98%

Extensive introgression of Middle American germplasm into Chilean common bean cultivars

Paredes

Gepts

1995

Genet Resour Crop Evol

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SummaryThe genetic diversity of 95 representative Chilean common bean (Phaseolus vulgaris L.) landraces was analyzed using phaseolin seed protein and eight isozyme systems as genetic markers. Four types of phaseolin were found, "C", "T", "S" and "H", in decreasing order of frequency. Each type had a different distribution between the Northern and Southern regions of the country. Nei's genetic distance based on isozyme diversity indicated that a high percentage of the total variation found in this sample occurred between tandraces and only a small percentage of the variation was detected within populations. Cluster analysis based on Nei's genetic distance and a principal component analysis of isozyme frequencies did not detect a clear association between the geographic distribution of the landraces and their isozyme constitution. However, Nei's genetic distance analysis clustered the bean landraces into two major groups which had a specific isozyme pattern, seed color, and seed size. The genetic analysis also detected a rare polymorphism for the Mdh-2 locus, a null allele at the Diap-2 locus, and polymorphism for the Aco-2 locus. The principal component analysis of isozyme frequencies showed that only 30% of the genotypes analyzed were similar to the Andean check and 5% of the samples were similar to Middle American check. This finding suggests a high frequency of hybridization between the Middle America and Andean gene pools in cultivated common bean from Chile.

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“…Electrophoretic studies in Vicia have so far been carried out on proteins in general (e, g. Ladizinsky 1975;Perrino et al 1977), or limited to special groups (Yamamoto 1975(Yamamoto , 1979Bassiri and Adams 1978).…”

Section: Discussionmentioning

confidence: 99%