Chromosome number and modal karyotype in a polysomatic endangered orchid, Bulbophyllum auricomum Lindl., the Royal Flower of Myanmar

Than, Myo Ma Ma; Pal, Amita; Jha, Sumita

doi:10.1007/s00606-011-0459-6

Cited by 11 publications

(4 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cytology is a branch of science that deals with cells, including chromosomes. Chromosomal studies play a role in determining plant genetic diversity, as indicated by the number of chromosomes and karyotype analysis (Daviña et al, 2009;Than et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…There are several known cytological characteristics of orchids, including Bulbophyllum auricomum Lindl. (Than et al, 2011), Catasetum (De Oliveira et al, 2014, Coelogyne pandurata Lindley (Hartati et al, 2017), Gastrodia javanica (Blume) Lindl. (Aoyama & Yokota, 2012), Cattleya (Da Silva et al, 2017), Chloraea and Gavilea (Aoyama et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Orchids Cytogenetics and Karyotype of Phaius callosus and Phaius montanus

Hartati

2022

AFP

View full text Add to dashboard Cite

The Phaius callosus and Phaius montanus orchids are ornamental orchids with high ornamental value and are classified as endangered plants. Genetic information from Phaius callosus and Phaius montanus orchids will facilitate plant breeding as it is essential to improve ornamental plant properties. Chromosome analysis aims to determine chromosomes' shape, number, and size. The research was conducted at the Cytology Laboratory of the LIPI Biology Research Center, Bogor, West Java. Analysis of research results based on observations of shooting results and data on the size and shape of chromosomes was carried out descriptively. The chromosome number of Phaius callosus and Phaius montanus had a similarity of 2n = 46, metacentric in shape. The chromosome size of Phaius callosus was 1.30 ± 0.29, while that of Phaius montanus was 2.32 ± 1.01. The karyotype formula of Phaius callosus and Phaius montanus had a similarity of 2n=46=23m which was dominantly metacentric.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Orchids Cytogenetics and Karyotype of Phaius callosus and Phaius montanus

Hartati

2022

AFP

View full text Add to dashboard Cite

show abstract

“…and Spinacia oleracea L. primary roots (Nero-Buffalino & Witkus 1984); Cucumis sativus seedlings and plants (Gilissen et al 1993) and seeds (Rewers et al 2009). ; Brassica oleracea L. seedling development (Kudo & Kimura 2001); Polygala vayredae Costa and P. calcarea F. W. Schultz endosperm, leaves and petals (Castro et al 2007); Beta vulgaris L. in vitro culture seedlings (Sliwinska & Lukaszewska 2005;Lukaszewska & Sliwinska 2007); Sorghum bicolor L. endosperm (Kladnik et al 2006); Solanum tuberosum L. callus from leaf in vitro culture (Pijnacker 1989); Bulbophyllum auricomum Lindl root-tips (Than et al 2011) and Phalaenopsis aphrodite subsp. formosana protocorms, leaves, roots and flowers (Chen et al 2011), among others.…”

Section: Introductionmentioning

confidence: 99%

Occurrence and significance of polysomaty in species of Mimosa L.

2012

View full text Add to dashboard Cite

Polysomaty is the occurrence of cells with different ploidy levels in the same organ or tissue and there are records of this in root-tip cells of some Mimosa species. The objective of the present work was to verify the occurrence, possible cause and significance of polysomaty in a range of species of this genus. In root-tip cells of 68 accessions of 43 diploid and tetraploid Mimosa species, the percentage of polysomatic cells ranged from 5% to 87%. Pretreatment with the antimitotic paradichlorobenzene did not cause polysomaty but increased it in some accessions. When relating seedling root size and percentage of polysomatic cells, for most of the species a higher percentage of polysomatic cells was found in roots from 6 to 10 cm length. For M. scabrella ("bracatinga"), a comparative analysis of seedling root-tip cells and roottip cells from well-developed plants kept in pots in a greenhouse showed that polysomaty occurred only in the seedling root-tips. The data suggest that, in Mimosa, polysomaty occurs only for a short period of the seedling development, probably as a natural mechanism to accelerate its development and establishment.

show abstract

“…Furthermore, they also play a key role in establishing phylogenetic relationships between species and inferring evolutionary trends (Sharma and Mukai, 2015;Stace, 2000). Despite being one of the largest families of angiosperm, cytological analysis has been carried out on no more than 10% of Orchidaceae (orchids) species due to the relatively high diversity in chromosome numbers and comparatively small or even minute chromosome size (Myo et al, 2011;Tanaka and Kamemoto, 1984). Their patterns of speciation and evolution of the entire Orchidaceae family are still debated because of lack of information on valuable chromosome landmarks (Sharma and Mukai, 2015).…”

mentioning

confidence: 99%

Ploidy Level, Karyotype, and Genome Size of Bletilla Species (Orchidaceae) From China

Yang

Zhang

et al. 2022

horts

View full text Add to dashboard Cite

Bletilla is an Orchidaceae genus with high medical value, including detumescence, antibacterial, and hemostasis. In this study, detailed estimates of ploidy level, karyotype, and genome size were first obtained, and a comprehensive cytological analysis was carried out to better understand the evolution of the genus. The karyotypes of Bletilla were mainly composed of metacentric and submetacentric chromosomes with lengths ranging from 1.25 to 4.93 μm. There was moderate cytological variation in Bletilla (chromosome number 2n = 32 to 76). Diploid with 2n = 34 and 2n = 36 was detected in Bletilla ochracea and Bletilla formosana, respectively, whereas diploid (2n = 32) was dominant in Bletilla striata, dysploidy (2n = 34, 2n = 36) and polyploid (2n = 48, 51, 64, 76) variations were also observed. Three species had a relatively symmetric karyotype, and which of B. ochracea was more asymmetry. The genome size (1C-values) varied from 2.94 pg (B. striata) to 3.33 pg (B. ochracea), of which B. ochracea was significantly larger than the others (P < 0.05). A positive correlation (P < 0.01) between 1Cx vs. haploid chromosome length (HCL) and asymmetry coefficient of karyotypes (AsK%) was observed.

show abstract

Chromosome number and modal karyotype in a polysomatic endangered orchid, Bulbophyllum auricomum Lindl., the Royal Flower of Myanmar

Cited by 11 publications

References 30 publications

Orchids Cytogenetics and Karyotype of Phaius callosus and Phaius montanus

Orchids Cytogenetics and Karyotype of Phaius callosus and Phaius montanus

Occurrence and significance of polysomaty in species of Mimosa L.

Ploidy Level, Karyotype, and Genome Size of Bletilla Species (Orchidaceae) From China

Contact Info

Product

Resources

About