Pollen morphology of Chinese Curcuma L. and Boesenbergia Kuntz (Zingiberaceae): Taxonomic implications

Chen, Juan; Xia, Nian‐He

doi:10.1016/j.flora.2011.01.007

Cited by 27 publications

(23 citation statements)

References 19 publications

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“…Kress et al (2002) suggested that Curcuma was paraphyletic based on the phylogenetic study of Zingiberaceae using ITS sequences and the plastid matK region. Recently, Chen & Xia (2011) indicated that the uniform pollen morphology in Curcuma did not provide any additional evidence to divide this genus into separate taxonomic entities. Moreover, hybridization and polyploidization have also contributed to taxonomic uncertainties in Curcuma (Z avesk a et al 2012; Chen & Xia 2013).…”

Section: Introductionmentioning

confidence: 99%

Testing DNA barcodes in closely related species of Curcuma (Zingiberaceae) from Myanmar and China

Chen

Zhao

Erickson

et al. 2014

Molecular Ecology Resources

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The genus Curcuma L. is commonly used as spices, medicines, dyes and ornamentals. Owing to its economic significance and lack of clear-cut morphological differences between species, this genus is an ideal case for developing DNA barcodes. In this study, four chloroplast DNA regions (matK, rbcL, trnH-psbA and trnL-F) and one nuclear region (ITS2) were generated for 44 Curcuma species and five species from closely related genera, represented by 96 samples. PCR amplification success rate, intra- and inter-specific genetic distance variation and the correct identification percentage were taken into account to assess candidate barcode regions. PCR and sequence success rate were high in matK (89.7%), rbcL (100%), trnH-psbA (100%), trnL-F (95.7%) and ITS2 (82.6%) regions. The results further showed that four candidate chloroplast barcoding regions (matK, rbcL, trnH-psbA and trnL-F) yield no barcode gaps, indicating that the genus Curcuma represents a challenging group for DNA barcoding. The ITS2 region presented large interspecific variation and provided the highest correct identification rates (46.7%) based on BLASTClust method among the five regions. However, the ITS2 only provided 7.9% based on NJ tree method. An increase in discriminatory power needs the development of more variable markers.

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Section: Introductionmentioning

confidence: 99%

Testing DNA barcodes in closely related species of Curcuma (Zingiberaceae) from Myanmar and China

Chen

Zhao

Erickson

et al. 2014

Molecular Ecology Resources

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“…They used many characteristics of the pollen grain, i.e., shape, size, symmetry, and polar aperture to identify the species of plants. For the genus Curcuma, Chen and Xia 10 have studied the pollen morphology of 14 species of Chinese Curcuma by SEM and transmission scanning microscopy (TEM). The present study was carried out in order to provide additional data for biological knowledge, identification and to present some palynological data, which would be useful for taxonomists who study or will study the family.…”

Section: Introductionmentioning

confidence: 99%

Pollen morphology of the genus Curcuma (Zingiberaceae) in Northeastern Thailand

Saensouk¹,

Theerakulpisut²,

Thammathaworn³

et al. 2015

ScienceAsia

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“…Some species are also found in Australia and the South Pacific (Wu and Larsen, 2000). Curcuma species are important specialty crops produced as medicinal, culinary, and ornamental plants (Chen and Xia, 2011). For example, C. aromatica Salisb., C. kwangsiensis S. G. Lee & C. F. Liang, C. phaeocaulis Valeton, C. sichuanensis X. X. Chen, C. wenyujin Y. H. Chen & C. Ling, and C. zanthorrhiza Roxb.…”

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Chromosome Numbers and Ploidy Levels of Chinese Curcuma Species

Chen

Xia²,

Zhao³

et al. 2013

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Additional index words. hidden cone gingers, tumeric, ZingiberaceaeAbstract. Curcuma L. is an economically important genus in the family Zingiberaceae. Many species are grown as medicinal, culinary, and ornamental crops. As a result of their high morphological diversity and small chromosome sizes, chromosome numbers and species relationships of Chinese Curcumas remain debated. This study examined chromosome numbers of 15 populations representing 11 species of Curcuma from China. Results showed that only Curcuma flaviflora S. Q. Tong was diploid with 2n = 2x = 42 and C. kwangsiensis S. G. Lee & C. F. Liang was tetraploid with 2n = 4x = 84. The other species were triploid (2n = 3x = 63). The study indicated that the basic chromosome number of Curcuma from China could be x = 21. The diploid C. flaviflora produced viable seeds, which was the main means for propagation. The tetraploid and the triploids produced no seeds and relied on rhizomes for propagation. Chromosome sizes of all species were small, ranging from 0.5 to 2.1 mm, which prevented karyotype analysis. The fact that nine of 11 species studied were triploid indicates that triploidy may have some type of competitive advantage over the diploid and tetraploid. In addition, the triploids are popular commercially because of abundant rhizome production and this may contribute to their wide distributions.

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Pollen morphology of Chinese Curcuma L. and Boesenbergia Kuntz (Zingiberaceae): Taxonomic implications

Cited by 27 publications

References 19 publications

Testing DNA barcodes in closely related species of Curcuma (Zingiberaceae) from Myanmar and China

Testing DNA barcodes in closely related species of Curcuma (Zingiberaceae) from Myanmar and China

Pollen morphology of the genus Curcuma (Zingiberaceae) in Northeastern Thailand

Chromosome Numbers and Ploidy Levels of Chinese Curcuma Species

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