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Research articles

ScienceAsia 41(2015): 87-92 |doi: 10.2306/scienceasia1513-1874.2015.41.087


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


Piyaporn Saensouka,*, Piyada Theerakulpisutb, Achra Thammathawornc, Surapon Saensoukd, Charun Maknoie,f, Pimjai Kohkaewe,f

 
ABSTRACT:     The palynological study of 14 species of Curcuma, namely C. alismatifolia Gagnep. 1, C. alismatifolia Gagnep. 2, C. alismatifolia Gagnep. 3, C. alismatifolia Gagnep. 4, C. alismatifolia Gagnep. 5, C. alismatifolia Gagnep. 6, C. angustifolia Roxb., C. gracillima Gagnep., C. harmandii Gagnep., C. larsenii Maknoi & Jenjitt, C. longa L. 1, C. longa L. 2, C. petiolata Roxb., C. parviflora Wall, C. cf. parviflora, C. pierreana Gagnep., C. rhabdota Sirirugsa & Newman., C. rubescens Roxb., C. singularis Gagnep., and C. sparganifolia Gagnep., was undertaken using a light microscope and scanning electron microscope. The pollen grains were monad, inaperturate, with radial symmetry and large with rugulose exine sculpturing. Pollen grains had various shapes (subspheroidal, prolate spheroidal, spheroidal, subprolate, and prolate). Pollen shape can be used as a supplementary character for identification of the Curcuma species. In the present study, the pollen morphology of 13 species of Curcuma is recorded for the first time.

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a Plant and Invertebrate Taxonomy and its Application Research Unit, Department of Biology, Faculty of Science, Mahasarakham University, Mahasarakham 44150 Thailand
b Applied Taxonomic Research Center, Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002 Thailand
c Office of General Education, Khon Kaen University, Khon Kaen 40002 Thailand
d Plant and Invertebrate Taxonomy and its Application Research Unit, Walai Rukhavej Botanical Research Institute, Mahasarakham University, Mahasarakham 44150 Thailand
e Queen Sirikit Botanic Garden, Mae Rim, Chiang Mai 50180 Thailand
f Nong Khai Campus, Khon Kaen University, Nong Khai 43000 Thailand

* Corresponding author, E-mail: pcornukaempferia@yahoo.com

Received 8 Mar 2014, Accepted 30 Jun 2015