ANEUPLOIDS FROM TRIPLOID-DIPLOID CROSSES IN THE SERIES<i>TUBEROSA</i>OF THE GENUS<i>SOLANUM</i>

Vogt, G.; Rowe, P. R.

doi:10.1139/g68-065

Cited by 30 publications

(17 citation statements)

References 11 publications

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“…This type of nonhomo logous association has been reported occurring very frequently in primary trisomics of Sorghum (Poon andWu 1967, Venkateswarlu andReddi 1969) and in Solanum (Vogt and Rowe 1968). But the absence of any ring trivalents at diaknesis in these trisomics indicates that either com plete pairing is absent between nonhomologous regions or terminalization of chiasmata has taken place at an early stage.…”

Section: Discussionmentioning

confidence: 56%

Pachytene karyotype of diploid Pennisetum americanum L. Leeke and identification of its trisomics.

Vari

Bhowal

1987

CYTOLOGIA

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Section: Discussionmentioning

confidence: 56%

Pachytene karyotype of diploid Pennisetum americanum L. Leeke and identification of its trisomics.

Vari

Bhowal

1987

CYTOLOGIA

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“…In diploid (2n = 24) natural populations of tuber-bearing Solanum species the occurrence of aneuploids has not yet been reported. In this genus two other sources of trisomic plants are known: 1) from tri.ptoid-diploid crosses (VON OLArL 1938;LAMM, 1945;VOGT & ROWE, 1968 ;LEE & ERICKSON, 1969;LEE, 1970;LAM & ERICKSON, 1970;LEE et al, 1971 andKESSEL et al, 1971), and 2) among parthenogenic dihaploid offspring Extended version of a lecture presented at a Eucarpia meeting about Potato Dihaploids, held at Wageningen (Netherlands). See Lange and Wagenvoort, 1973b. of tetraploid-diploid crosses (FRANDSEN, 1967 ;HERMSEN, 1969;HERMSEN et al, 1970).…”

Section: Introductionmentioning

confidence: 99%

The production of aneudihaploids in Solanum tuberosum L. group Tuberosum (the common potato)

Wagenvoort¹,

Lange²

1975

Euphytica

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Trisomic cytotypes were produced in dihaploid (diploid) plants of Solanum tuberosum L. Group Tuberosum, the common potato, according to two methods. Firstly, the aberrant types were selected, through chromosome counting, from parthe.nogenic dihaploid offspring of tetraploid-diploid crosses. In dihaploid populations from twelve tetraploid potato varieties the frequencies of aneuploids ranged from 3.5 to 11.0~g. About 95~ of these aneuploids had only one, and the others not more than two extra chromosomes. Secondly, the aneuploids were produced from triploid-diploid crosses. Seedset strongly depended on the crossability of the parental plant material, and the best results were obtained when the motherplants were grafted onto tomato. On avarage the three most successful cross combinations resulted in approximately 0.7 berries per pollination and 6 seeds per berry. With regard to seedsize the seed could be divided in two groups, viz. normal and small seeds. Half of the seed did not germinate or produced inviable seedlings, especially among the small seed group. About 93~, of the plants was aneuploid, with 25, 26 and 27 being the predominant chromosome numbers. It was concluded that the production of trisomics was the most successful through triploid-diploid crosses. The results were discussed with reference to the chromosomal behaviour in the meiosis in triploid plants (LANGE & WAGENVOORT, 1973a). It thus was possible to relate the low seedset to the distribution of chromosomes in the meiotic anaphases. On the one side this distribution resulted in a limitation of the availability of gametes with monohaploid and near-monohaploid chromosome numbers, while on the other side the macrospores with higher chromosome numbers seemed to be inviable. Finally a crossing scheme was presented for transmitting the trisomic condition into a genetic background with better homogeneity and more homozygosity.

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“…Triploids often have been used for the production of trisomics, which also is the case in Solanum (VoN OLC.H, 1938;LAMM, 1945;VOGT and RowE, 1968;LEE and ERICKSON, 1969;LAM and ERICKSON, 1970;LEE, KESSEL and RowE, 1971;KESSEL, LEE and RowE, 1971 ;HERMSEN, pets. comm).…”

Section: Introductionmentioning

confidence: 99%

Meiosis in triploid Solanum tuberosum L.

Lange¹,

Wagenvoort²

1973

Euphytica

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Meiosis in triploid Solanum tuberosum was studied in plants that originated from crosses between tetraploids and diploids, the latter being mainly dihaploids.Association of chromosomes in first metaphase was regular, being as expected for autotriploid material. In first anaphase lagging chromosomes occurred that mostly divided precociously into their chromatids, the amount of lagging chromosomes being more or less proportional to the average number of univalents at M I. The A I distribution of chromosomes over the poles fitted a normal distribution.In the second meiotic division also lagging chromosomes were observed. During this division disturbances occurred resulting in cells with more or less the somatic chromosome number. The origin of this aberration is discussed, together with the relation between meiotic behaviour and pollen stainability.

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ANEUPLOIDS FROM TRIPLOID-DIPLOID CROSSES IN THE SERIESTUBEROSAOF THE GENUSSOLANUM

Cited by 30 publications

References 11 publications

Pachytene karyotype of diploid Pennisetum americanum L. Leeke and identification of its trisomics.

Pachytene karyotype of diploid Pennisetum americanum L. Leeke and identification of its trisomics.

The production of aneudihaploids in Solanum tuberosum L. group Tuberosum (the common potato)

Meiosis in triploid Solanum tuberosum L.

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