Induced Tetraploid Solanum Species and Species Hybrids: Meiosis and Use in Breeding

Beamish, Katherine I.; Cooper, D. C.; Hougas, R. W.

doi:10.1002/j.1537-2197.1957.tb10545.x

American J of Botany

1957

DOI: 10.1002/j.1537-2197.1957.tb10545.x

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Induced Tetraploid Solanum Species and Species Hybrids: Meiosis and Use in Breeding

Katherine I. Beamish

D. C. Cooper

R. W. Hougas

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1957

1975

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Cited by 9 publications

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“…The chromosome number of such a plant may be doubled and then directly crossed with selected lines of the common potato. This would appear to be the more practical approach to the problem (Beamish et. al.. 1957) .…”

mentioning

confidence: 99%

Cytogenetic Studies of Some Diploid Solanums Section Tuberarium

Magoon

Cooper

Hougas

1958

American J of Botany

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mentioning

confidence: 99%

Cytogenetic Studies of Some Diploid Solanums Section Tuberarium

Magoon

Cooper

Hougas

1958

American J of Botany

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Production of intraspecific aneuploids in the genus Solanum. 1. Doubling the chromosome number of seven diploid species

Kessel

Rowe

1975

Euphytica

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The variation which persisted in interspecific aneuploids even after one or two generations of backcrossing prevented the morphological distinction of the aneuploids from their diploid sibs. An attempt was made to unmask the effects of aneuploidy by producing aneuploids within the more uniform genetic background of a single species.The procedure to produce trisomics and aneuploids of diploid species was to vegetatively double clones or seed of the species with colchicine, cross the induced tetraploids to diploids to produce triploids, and then cross the triploids to the original diploids. An attempt was made to use the same diploid clone and/or introduction of a species in all successive stages of the procedure in order to obtain as much uniformity as possible. This was largely unsuccessful because self-incompatibility and inbreeding reduced seed set. Seventy-three different tetraploids were obtained from seven species. Tuber treatments were noticeably unsuccessful in producing doubled plants. The two vegetative treatments were most successful and produced 41 different tetraploid clones while 30 doubled plants were obtained from four seed treatments.Morphologically the tetraploids resembled the diploid and there was no noticeable increase in size of leaflets and floral parts in the tetraploid. The average number of chloroplasts in ten pairs of guard cells was a distinctive feature which could efficiently be used in distinguishing the induced tetraploid plants from diploids. The tetraploids were generally less fertile than their diploid counterparts and the majority of them exhibited self-compatibility in comparison to self incompatibility of the diploids.

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Crossability ofSolanum tuberosum haploids with diploidSolanum species

Hougas

Peloquin

1960

Europ. Potato J.

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Induced Tetraploid Solanum Species and Species Hybrids: Meiosis and Use in Breeding

Cited by 9 publications

References 10 publications

Cytogenetic Studies of Some Diploid Solanums Section Tuberarium

Cytogenetic Studies of Some Diploid Solanums Section Tuberarium

Production of intraspecific aneuploids in the genus Solanum. 1. Doubling the chromosome number of seven diploid species

Crossability ofSolanum tuberosum haploids with diploidSolanum species

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