Cytogenetic studies on Solanum tuberosum L. and some of its relatives

Koopmans, A.

doi:10.1007/bf01784832

Cited by 38 publications

(20 citation statements)

References 106 publications

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“…LEVITSKY and BENETZKAJA (1927) analysed three varieties of S. tuberosum and .recorded obvious differences in shape and different chromosome number in different cells. They considered that this variability in chromosome number was due to fragmentation and further suggested that this " Karyotypical variation " to be of the same nature as noted by certain other workers in different plants (see for review KooPMANS 1951). Much reliance cannot be placed on these findings because a critical analysis of their drawings suggests that the material might have been badly fixed.…”

Section: B Morphology Of Somatic Chromosomesmentioning

confidence: 87%

“…A fairly regular meiosis is essential if loss of chromatin material or poor fertility is not to prove an obstacle to such a transfer. Preliminary studies on the meiotic behaviour of a number of hybrids of this type have given contradictory results (see HowARD and SwAMINATHAN 1952, KooPMANS 1951, KAWAKAMI and MATSUBAYA-SHI 1957b, MAGOON et al 1958C, g, h, 1959, WALKER 1959. BLACK (1943), in order to overcome the instability inherent in the pentaploid hybrid between S. demissum and S. tuberosum, suggested that synthesising artificial tetraploids by crossing S. ckmissum with diploid species and then crossing these tetraploid hybrids with S. tuberosum would prove more useful since these hybrids may be expected to have a fairly regular meiosis.…”

Section: (Ii) Synthesized Tetraploids (A) Tetraploids Derked From Crmentioning

confidence: 96%

“…Since the chromosomes in this group are very small and the material presents certain difficulties in getting well-spread and nicely stained preparations, it is very necessary to develop better methods of fixation and staining. The fixation used vary according to the preference of the workers, among those used with Solanum material being Benda (ELLISON 1935), Levitsky's platinic formalin (SEPELEVA 1937), several modification of Navashin (CHOUDHURI 1944, KooPMANS 1951, medium Flemming (see LACOUR 1937, LAMM 1945) and a fixative containing 7 parts of 75% Alcohol, 1 part of formalin, 1 part of chloroform and 1 part of glacial Acetic acid (MAGOON and CooPER (unpub. ), vide KITA et al 1959).…”

Section: Nature Of Species Differextiationmentioning

confidence: 99%

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Cytogenetical Studies in Relation to the Origin and Differentiation of Species in the GenusSolanumL.

1962

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Section: B Morphology Of Somatic Chromosomesmentioning

confidence: 87%

Section: (Ii) Synthesized Tetraploids (A) Tetraploids Derked From Crmentioning

confidence: 96%

Section: Nature Of Species Differextiationmentioning

confidence: 99%

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Cytogenetical Studies in Relation to the Origin and Differentiation of Species in the GenusSolanumL.

1962

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“…chacoense, S . stenotomum and S. phureja plasmons (KOOPMANS, 1951(KOOPMANS, , 1952(KOOPMANS, , 1954(KOOPMANS, , 1955(KOOPMANS, , 1959GRUN et al ., 1962) .…”

Section: Striped Vacuolar Sterilitymentioning

confidence: 99%

Plasmons and male sterility types in Solanum verrucosum and its interspecific hybrid derivatives

Abdalla

Hermsen

1972

Euphytica

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Solanum verrucosum (2n = 24) is easily crossablewithmanydiploidspeciesandhaploids, but usually as a female partner only . All interspecific hybrids studied appeared male sterile due to interaction of S .verrucosum plasmons with genes from male parents . Seven male sterility types have been discovered in the investigations made on 21 S. verrucosum introductions and their interspecific hybrid derivatives . These are briefly discussed . S . verrucosum proves to possess at least four plasmons denoted as [Trs], [Ps'], [Svs] and fns'] . Each produces a diagnostic type of male sterility in the presence of the specific plasmon-sensitive genes which are widely spread . The role of hybrid sterility as a barrier to gene exchange between populations is discussed .

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“…Germination in solution of'colchicine. (JOHNSTONE, 1939;KOOPMANS, 1951). Seeds were placed on filter paper in a petri dish and soaked in either 0.5% or 0.1% colchitine.…”

Section: Methodsmentioning

confidence: 99%

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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Cytogenetic studies on Solanum tuberosum L. and some of its relatives

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Cited by 38 publications

References 106 publications

Cytogenetical Studies in Relation to the Origin and Differentiation of Species in the GenusSolanumL.

Cytogenetical Studies in Relation to the Origin and Differentiation of Species in the GenusSolanumL.

Plasmons and male sterility types in Solanum verrucosum and its interspecific hybrid derivatives

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

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