Variation and evolution in the karyotype of Lycoris, Amaryllidaceae. I General karyomorphological characteristics of the genus.

Kurita, Siro

doi:10.1508/cytologia.51.803

Cited by 37 publications

(48 citation statements)

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“…According to his calculation, these subterminal chromosomes have the arm ratio of 7.4 and 6.0 respectively. So, they are typical A type chromosomes in the sense of the present author (Kurita 1986). He also reported that the chromosome complement of the race having 2n=13 consists of six medianly constricted, three submedianly constricted, one subterminally constricted, and three terminally constricted chromosomes.…”

Section: Methodssupporting

confidence: 58%

“…Though any of previous authors did not report, conspicuous hetrochromatic proximal segment on some T type chromosomes was observed. A small amount of C-banding positive hetero chromatin is in this segment (Kurita 1986). The boundary between heterochromatic segment and euchromatic part in such T type chromosome looks like a constriction at a glance, so some investigators misunderstood it primary constriction or centromeric region and described this chromosome as an acrocentric one carrying satellite.…”

Section: Discussionmentioning

confidence: 99%

“…The longest T type chromosome may originate in 12-chromosomed race and the rest three may originate in 14-chromosomed race (cf. Kurita 1986).However, there is no information about when and how both parental races had met and crossed each other. Today, we can not find the race having 2n=14 in Kyushu district where the putative hybrid race grows, and it is restricted in Loochoo Islands and southward.…”

Section: Discussionmentioning

confidence: 99%

“…A small amount of C-banding positive heterochromatin is found in this region (cf. Kurita 1986). Cytological and morphological characters of these taxa rather indicate that each of the fertile taxa having 2n=12 and 2n=14 is independent biological species.…”

Section: Discussionmentioning

confidence: 99%

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Variation and evolution in the karyotype of Lycoris, Amaryllidaceae. III Intraspecific variation in the karyotype of L. traubii Hayward.

Kurita

1987

CYTOLOGIA

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Section: Methodssupporting

confidence: 58%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Variation and evolution in the karyotype of Lycoris, Amaryllidaceae. III Intraspecific variation in the karyotype of L. traubii Hayward.

Kurita

1987

CYTOLOGIA

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“…Current information concerning chromosome banding in this family has shown no significant heterochromatin content or very low C-band numbers on metaphase chromosomes (VosA and MARCHI 1979;KURITA 1986;SINHA and ROY 1986;D'AMATO and DE DOMINICIS 1996;YUZBASIOGLU et al 1996). A more substantial polymorphic pattern, consisting of interstitial C-bands, was found by SVESHNIKOVA (1991) in analysing 30 populations of Galanthus species from Russia and Bulgaria.…”

Section: Introductionmentioning

confidence: 76%

The chromosome banding of some Italian Amaryllidaceae

D’Amato

Bianchi

1999

Caryologia

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-Cytological investigations of some representative species of Amaryllidaceae belonging to the Italian flora were carried out using banding techniques and silver nitrate staining for nucleoli and NORs. The occurrence of diverse quality and amount of heterochroma-tin was observed in metaphase chromosomes but in general the patterns of C-bands are very simple. Mean karyotype length and Simmetry index for each investigated species are also reported.

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Cytogeography and chromosomal variation of the endemic East Asian herb Lycoris radiata

Liu

Meng

Zheng

et al. 2019

Ecology and Evolution

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Information on the spatial distribution of cytotypes and karyotype variation in plants is critical for studies of the origin and evolution of polyploid complexes. Here, the spatial distribution of cytological races and intraspecific variation in the karyotype of Lycoris radiata, an endemic species to East Asia, is investigated. Conventional karyotype analysis methods were used to determine ploidy level and karyotypical characteristics in 2,420 individuals from 114 populations of L. radiata nearly covering the whole distribution areas in China. Of 114 populations studied, 52 (45.61%), 58 (50.88%), and 4 (3.51%) are diploid, triploid, and mixoploid populations, respectively, with 1,224, 1,195, and 1 individuals being diploid, triploid, and tetraploid, respectively. The triploid possesses a much wider distribution range than the diploid, with the former almost occupying the entire range of this complex species in East Asia and the latter distributing in the middle and east regions of China. Triploids tend to occur at high altitudes, and the relationship between the ploidy and altitude is significantly positive but low (r2 = 0.103, p < 0.01). About 98.6% of examined bulbs have a common karyotype consisting of 22 or 33 acrocentric (A) chromosomes. Some aberrant chromosomes which should be generated from A‐type chromosome have been found including metacentrics (m), small metacentrics (m′), and B‐type chromosome. The results can provide a fundamental cytogeographic data for further studies on the evolutionary origins and adaptive divergences of polyploids, especially the triploid, within L. radiata using molecular and/or ecological methods in the future.

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Variation and evolution in the karyotype of Lycoris, Amaryllidaceae. I General karyomorphological characteristics of the genus.

Cited by 37 publications

References 1 publication

Variation and evolution in the karyotype of Lycoris, Amaryllidaceae. III Intraspecific variation in the karyotype of L. traubii Hayward.

Variation and evolution in the karyotype of Lycoris, Amaryllidaceae. III Intraspecific variation in the karyotype of L. traubii Hayward.

The chromosome banding of some Italian Amaryllidaceae

Cytogeography and chromosomal variation of the endemic East Asian herb Lycoris radiata

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