Karyomorphological studies in three populations of Solanum surattense, a weed.

Trivedi, Ruchi; Sinha, A. K.

doi:10.1508/cytologia.51.157

Cited by 11 publications

(15 citation statements)

References 6 publications

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“…ANaVA analyses performed among different accessions of all species-including some species that are variable in their morphology-show a high degree of intraspecific uniformity for all variables measured. This lack of interpopulational variation was also observed in other solanaceous plants (Goodspeed, 1954;Takehisa, 1964;Moscone, 1989;Bernardello and Anderson, 1990), although some taxa of the family are cytologically quite variable (Pickersgill, 1977;Wu and Li, 1985;Trivedi and Sinha, 1986;Moscone, 1990).…”

Section: Discussionsupporting

confidence: 61%

Karyotypic Studies in Solanum Section Lasiocarpa (Solanaceae)

Bernardello

Heiser

Piazzano

1994

American Journal of Botany

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Mitotic chromosomes of 13 species included in So/anum sect. Lasiocarpa were studied. All species have 2n = 24. The chromosome numbers of S. stagnate, S. felinum, and S. repandum are reported for the first time. Statistical analyses of chromosomes, genome length, and centromere position yielded estimates of karyotype composition and asymmetry. A generalized karyotype of the section shows that most of the chromosomes are metacentric (73%) or submetacentric (25.6%). Two pairs of subtelocentric chromosomes are present only in S. sessi/iflorum. Satellites are quite common, characterizing chromosomes for ten species and are attached to the short arms of either m or sm chromosomes. They could be seen in 10% to 70% of the cells. Only S. pseudo/ufo bears two satellited chromosomes, one of them attached to a long chromosome arm. Although the section is chromosomally quite homogeneous, species can be distinguished by karyotype formula, presence of satellites in a particular chromosome pair, and total chromosome length. There are no indications of major chromosomal rearrangements within the section. Using cytological data exclusively, cluster analysis indicates S. sessi/iflorum is isolated in the section. So/anum candidum and S. vestissimum are somewhat isolated as well and have unique karyological traits. So/anum pectinatum has a peculiar karyotype, but in the phenogram it is not particularly separated. Karyotype features suggest that morphological differentiation was not always followed by chromosomal divergence. The origin ofthe domesticated S. quitoense is no further elucidated by our data.

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Section: Discussionsupporting

confidence: 61%

Karyotypic Studies in Solanum Section Lasiocarpa (Solanaceae)

Bernardello

Heiser

Piazzano

1994

American Journal of Botany

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“…This lack of interpopulational variation was also observed in other solanaceous plants (Goodspeed, 1954;Takehisa, 1964;Moscone, 1989;Bernardello and Anderson, 1990), although some taxa of the family are cytologically quite variable (Pickersgill, 1977;Wu and Li, 1985;Trivedi and Sinha, 1986;Moscone, 1990). This lack of interpopulational variation was also observed in other solanaceous plants (Goodspeed, 1954;Takehisa, 1964;Moscone, 1989;Bernardello and Anderson, 1990), although some taxa of the family are cytologically quite variable (Pickersgill, 1977;Wu and Li, 1985;Trivedi and Sinha, 1986;Moscone, 1990).…”

Section: Discussionsupporting

confidence: 58%

Karyotypic studies in Solanum section Lasiocarpa (Solanaceae)

Bernardello

Heiser²,

Piazzano

1994

American J of Botany

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Mitotic chromosomes of 13 species included in Solanum sect. Lasiocarpa were studied. All species have 2n = 24. The chromosome numbers of S. stagnale, S. felinum, and S. repandum are reported for the first time. Statistical analyses of chromosomes, genome length, and centromere position yielded estimates of karyotype composition and asymmetry. A generalized karyotype of the section shows that most of the chromosomes are metacentric (73%) or submetacentric (25.6%). Two pairs of subtelocentric chromosomes are present only in S. sessiliflorum. Satellites are quite common, characterizing chromosomes for ten species and are attached to the short arms of either m or sm chromosomes. They could be seen in 10% to 70% of the cells. Only S. pseudolulo bears two satellited chromosomes, one of them attached to a long chromosome arm. Although the section is chromosomally quite homogeneous, species can be distinguished by karyotype formula, presence of satellites in a particular chromosome pair, and total chromosome length. There are no indications of major chromosomal rearrangements within the section. Using cytological data exclusively, cluster analysis indicates S. sessiliflorum is isolated in the section. Solanum candidum and S. vestissimum are somewhat isolated as well and have unique karyological traits. Solanum pectinatum has a peculiar karyotype, but in the phenogram it is not particularly separated. Karyotype features suggest that morphological differentiation was not always followed by chromosomal divergence. The origin of the domesticated S. quitoense is no further elucidated by our data.

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“…Trivedi and Sinha 1986;Bernardello and Anderson 1990;Bernardello et al 1994;Moscone 1990Moscone , 1999Acosta and Moscone 2000;Acosta et al 2005;Chiarini and Bernardello 2006). On the other hand, st chromosomes in Solanum are rare, either as one pair (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, st chromosomes in Solanum are rare, either as one pair (e.g. Trivedi and Sinha 1986;Bernardello and Anderson 1990;Acosta et al 2005;Chiarini and Bernardello 2006) or two pairs (e.g. Bernardello et al 1994;Chiarini and Bernardello 2006).…”

Section: Discussionmentioning

confidence: 99%

Karyotypes of South American species of the Morelloid and Dulcamaroid clades (Solanum, Solanaceae)

2013

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A karyotypic study on South American representatives of the Morelloid and Dulcamaroid clades of Solanum was conducted to contribute to a better understanding of their relationships. Mitotic chromosomes of 26 species were examined (13 of which were previously unknown). All taxa presented 2n = 2x = 24 and had small chromosomes (less than 4 μm long) with the exception of S. crispum. Most species displayed symmetrical karyotypes, being 78% and 69% m, 19% and 25% sm and 3% and 6% st for the Morelloid and Dulcamaroid clades, respectively. Solanum crispum (Dulcamaroid clade) was unique by having mostly sm chromosomes and S. sinuatirecurvum (Morelloid clade) stood out with four st pairs and an exclusive pair of satellites in long arms. Solanum tripartitum was the sole entity exhibiting an sm pair with satellites. Most examined species of these clades resulted karyologically indistinguishable, based on conventionally stained mitotic chromosomes. Molecular analyses are needed to gain a better knowledge of the possible karyoevolutionary trends of both clades.

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Karyomorphological studies in three populations of Solanum surattense, a weed.

Cited by 11 publications

References 6 publications

Karyotypic Studies in Solanum Section Lasiocarpa (Solanaceae)

Karyotypic Studies in Solanum Section Lasiocarpa (Solanaceae)

Karyotypic studies in Solanum section Lasiocarpa (Solanaceae)

Karyotypes of South American species of the Morelloid and Dulcamaroid clades (Solanum, Solanaceae)

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