A New Genotype for White Seed Coat Discovered in `Early Wax' Snap Bean

Bassett, Mark J.; Blom, Arie

doi:10.21273/jashs.116.1.131

Cited by 13 publications

(23 citation statements)

References 11 publications

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“…The genotype T Z L (same as T Z j) expresses the margo pattern (Table 2). Genotype T Z l ers expresses unpatterned black (Bassett and Blom, 1991). Thus, the data from the T Z background supports the hypothesis that j and L are identical alleles, but l ers is a different allele.…”

Section: Genotypessupporting

confidence: 74%

“…Genetic tester stock t z l ers white BC 2 5-593 was developed from the 'Early Wax' snap bean (Bassett and Blom, 1991), but the unusual genotype for white seedcoat in 'Early Wax' was determined later (Bassett, 1997). Genetic tester stock t z j white BC 3 5-593 was developed while testing the hypothesis of allelism between the genes z and d .…”

Section: Development Of Genetic Tester Stocksmentioning

confidence: 99%

“…These stocks contain one or more recessive marker genes backcrossed into 5-593 with selection against all other marker genes (Bassett, 1994b). Line 5-593 has colored (purple) flowers due to the genotype T P V (Leakey, 1988).Genetic tester stock t z l ers white BC 2 5-593 was developed from the 'Early Wax' snap bean (Bassett and Blom, 1991), but the unusual genotype for white seedcoat in 'Early Wax' was determined later (Bassett, 1997). Genetic tester stock t z j white BC 3 5-593 was developed while testing the hypothesis of allelism between the genes z and d .…”

mentioning

confidence: 99%

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Inheritance of Reverse Margo Seedcoat Pattern and Allelism between the Genes J for Seedcoat Color and L for Partly Colored Seedcoat Pattern in Common Bean

Bassett¹,

Lee²,

Symanietz³

et al. 2002

jashs

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Two common bean (Phaseolus vulgaris L.) genes, J (modifies seedcoat color and pattern) and L (modifies partly colored seedcoat pattern), were tested for allelism using genetic tester stocks. Those stocks have a common genetic background by backcrossing to the recurrent parent, Florida dry bean breeding line 5-593, that has black self-colored seeds and purple flowers due to the genotype T P [C r] Z J G B V Rk. Specifically, the L gene from `Thuringia' and the lers gene from `Early Wax' were tested for allelism with the j gene from various genetic tester stocks. L was found to be identical with j, but lers was a different allele at J. We propose the gene symbols J (formerly l), j (formerly L), and jers (formerly lers). The seedcoat genotype of `Thuringia' was found to be t P C z j g b vlae rkd. A new seedcoat pattern called reverse margo was found to be determined by the genotype T/t z/z j/jers in a P C G B V genetic background. A randomly amplified polymorphic DNA marker was developed for the j gene (formerly L) from `Thuringia' using bulk segregant analysis in an F2 population segregating for j vs. J in a t z genetic background, i.e., from the cross t z j × t z J in BC1 to 5-593. The linkage distance between marker OL4525 and j was determined to be 1.2 cM. In a population segregating for J and jers, the distance between the marker and jers was determined to be 4.7 cM. The utility of marker OL4525 is limited primarily to the Middle American gene pool.

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Section: Genotypessupporting

confidence: 74%

Section: Development Of Genetic Tester Stocksmentioning

confidence: 99%

mentioning

confidence: 99%

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Inheritance of Reverse Margo Seedcoat Pattern and Allelism between the Genes J for Seedcoat Color and L for Partly Colored Seedcoat Pattern in Common Bean

Bassett¹,

Lee²,

Symanietz³

et al. 2002

jashs

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“…Crosses were made in the greenhouse between 'Redcoat' and 'Red Hawk' and between both of these cultivars and each of three genetic testers for seedcoat pattern developed by Bassett (Bassett and Blom, 1991;Bassett, 1996): t self-colored BC 3 (Self-colored t Z Bip V Rk), t cl z g b v virgarcus BC 3 (Virgarcus t z Bip v Rk), and t z bip bipunctata BC 3 5-593 (Bipunctata t z bip V Rk) (Table 1). For all crosses, three to four pods were harvested from each F 2 plant, and the seedcoat pattern was recorded.…”

Section: Methodsmentioning

confidence: 99%

A Spontaneous Mutation at a Seedcoat Pattern Locus in the Dark Red Kidney Bean `Red Hawk,' which Changes Seed from Self-colored to the Partially Colored Virgarcus Pattern

Ernest¹,

Kelly²,

Bassett³

2005

HortSci

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`Redcoat' soldier bean cultivar originated from off-type, virgarcus patterned seeds found in a foundation seed lot of `Red Hawk' dark red kidney bean (Phaseolus vulgaris L.). These off-type seeds were hypothesized to be the result of a single gene mutation. A mutation at either of two loci involved in bean seedcoat pattern expression, T or Z, could convert self-colored seedcoats to a virgarcus pattern. The results of test-crosses of `Redcoat' and `Red Hawk' to lines with known alleles at the seedcoat pattern loci indicate that the dominant T allele of `Red Hawk' mutated to recessive t in `Redcoat'. The mutant t gene prevents expression of red veins in wing petals due to v rkd, and enables expression of the z gene (and possibly other genes) carried cryptically by `Red Hawk'. On the basis of preliminary data, we speculate that the two types of virgarcus patterns observed (classic in `Redcoat' and standard in the tester) may be controlled by different Bip alleles as they interact with t z.

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“…Details of the backcross procedure are described by Bassett (1994c). The tester stock, t BC 2 5-593, has white flowers due to t (derived from 'Early Wax'), but self-colored black seeds due to having the genes in 5-593 that fully extend dark pattern color in the presence of t (Bassett and Blom, 1991). The tester stock, c u BC 2 5-593, was derived from 'Prakken 75' an all-recessive tester stock obtained from R. Prakken of the Netherlands (Bassett, 1994d).…”

Section: Methodsmentioning

confidence: 99%

New Genes, stp and stphbw, for Flower and Seedcoat Pattern in Common Bean

Bassett¹

1996

jashs

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The inheritance of novel flower and seedcoat patterns was studied in three parental materials: PI 390775 and `Springwater Half Runner' (SHR), which have patterned flower and seedcoat colors, and 5-593, a Florida dry bean breeding line with unpatterned purple flowers and seeds. Using crosses between 5-593 and the other two parents, an analysis of F1, F2, backcross F2, and backcross F3 data demonstrated that a single recessive allele in each of the patterned parents controlled flower and seedcoat pattern. Genetic tester stocks were used to demonstrate that the recessive gene for patterning in PI 390775 was nonallelic with C, T, and Mar, the three genes previously known to control seedcoat pattern in common bean. An allelism test between the recessive pattern genes from PI 390775 and SHR demonstrated that they were allelic and that the gene from SHR was dominant. The gene symbols stp (for the gene from PI 390775) and stphbw (for the dominant gene from SHR) are proposed, where stp stands for stippled seedcoat pattern and the superscript letters hbw stand for half banner white.

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A New Genotype for White Seed Coat Discovered in `Early Wax' Snap Bean

Cited by 13 publications

References 11 publications

Inheritance of Reverse Margo Seedcoat Pattern and Allelism between the Genes J for Seedcoat Color and L for Partly Colored Seedcoat Pattern in Common Bean

Inheritance of Reverse Margo Seedcoat Pattern and Allelism between the Genes J for Seedcoat Color and L for Partly Colored Seedcoat Pattern in Common Bean

A Spontaneous Mutation at a Seedcoat Pattern Locus in the Dark Red Kidney Bean `Red Hawk,' which Changes Seed from Self-colored to the Partially Colored Virgarcus Pattern

New Genes, stp and stphbw, for Flower and Seedcoat Pattern in Common Bean

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