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| Kaempferia pseudoparviflora P. Saensouk & Saensouk in Saensouk & Saensouk, 2021. ว่านกระชายดำเทียม || DOI: 10.3923/ajps.2021.414.420 |
ABSTRACT
Background and Objective: Kaempferia pseudoparviflora is a new species from Thailand. Cytogenetics and palynology of this new species are never reported before. Therefore, this study aimed to study the taxonomical study, karyology and palynology of Kaempferia pseudoparviflora sp. nov. from Thailand.
Materials and Methods: Plant taxonomy study was surveyed to collect specimen, described, measurements reported and illustrated from living specimens and spirit specimens under stereo microscope. Photographed were taken in the field. This specimen was compared with dry specimens at aboard herbaria. The chromosome numbers of this species were studied from root tips and counted from 20 cells. The nomenclature of the chromosome morphology, karyotype symmetry degree. For the arrangement of the karyotypes, the following parameters from metaphase chromosomes were calculated by methods of several scientists. The pollens of this species were analyzed using an alcohol series. The pollen grains morphology were studied using SEM.
Results: The new species has four distinctive in leaf, pseudostem, peduncle and inflorescence. The morphological characters of Kaempferia pseudoparviflora are similar to those of K. parviflora. A cytogenetic study of this species was found that chromosome number 2n = 22 and the karyotype formula to be symmetrical with 8+14 m and one visible satellite chromosome. The pollen morphology of a new species was monad, spheroidal, 99.37±3.61 μm in diam., large size, radial symmetry, apolar, inaperturate, exine sculpturing verrucate and regulate.
Conclusion: Kaempferia pseudoparviflora was discovered to be a new species and endemic to Thailand.
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Kaempferia pseudoparviflora P. Saensouk & Saensouk. Habitat one leaf flat near the ground (very short pseudostem with inflorescence exerted from pseudostem);Flower white with labellum (white and purple in the middle) |
Kaempferia pseudoparviflora sp. nov.
Diagnosis: The new species had examined and compared this undescribed species to other similar characteristics species but found that flowers of this species did closely related to flowers of Kaempferia parviflora Wall. ex Baker but it differs in colour of inside rhizome, pseudostem, leaf shape, upper leaf surface and inflorescence and treated as a new species under the name of Kaempferia pseudoparviflora sp. nov, the epithet name refers to its flowers shown in Fig. 1.
Etymology: The specific epithet of the new species is derived from two Latin words, “pseudo” means “artificial or not genuine or spurious or sham” and “parviflora” means specific epithet of K. parviflora.
ว่านกระชายดำเทียม
Ecology: It grows on an open area and under the shade of in the sandy loam soil close to the water stream, in the deciduous forest from northern Thailand. It appears only in the rainy season.
Piyaporn Saensouk and Surapon Saensouk, 2021. Taxonomy, Cytology and Palynology of Kaempferia pseudoparviflora (Zingiberaceae), A New and Rare Species from Northern Thailand. Asian Journal of Plant Sciences. 20: 414-420. DOI: 10.3923/ajps.2021.414.420
นักวิชาการไทย ค้นพบพืชวงศ์ขิง 8 ชนิดใหม่ของโลก และรายงานครั้งแรกในไทยอีก 1 ชนิด บ่งชี้ความหลากหลายทางชีวภาพของไทย