Variation of Rice Grain Iron Content Within and Between Varieties of Thai Local Rice
Article Sidebar
Main Article Content
Abstract
This experiment examined variation of Fe concentration in rice grain of local rice varieties. Seeds of 17 named varieties were collected in 66 accessions from farmers in Huai Tee-Cha village, Sob Moei District, Mae Hong Son. Brown rice from each accession was stained individually with Perls’ Prussian blue, with IR68144 (high grain Fe) and KDML105 (low grain Fe) as checks. A whole range of grain Fe contents were found between the different varieties, different seed lots with the same name and within some of the seed lots, notably Bue Bang, Bue Gua and Bue Kee. The Fe concentration in these varieties was confirmed by chemical analysis. Two accessions of each variety with intense and grain Fe concentration was selected, 30 seeds from each were grown for progeny testing. There was morphological variation between plants in each accession in characteristics such as pigmentation of the apiculus, pericarp and seed coat. Seeds from progeny test were analysed for Fe concentration. It was found that Fe concentration in the grain ranged from 9.5 to 16 mgFe/kgDW brown rice. We have shown that variation in grain Fe concentration in Thai rice may be found between varieties with different names, between seed lots with the same name and within individual seed lots.
Article Details
References
ทรายแก้ว มีสิน. 2547. โครงสร้างความหลากหลายทางพันธุกรรมของเชื้อพันธุ์ข้าวพื้นเมืองไทย. วิทยานิพนธ์วิทยาศาสตรมหาบัณฑิต มหาวิทยาลัยเชียงใหม่, เชียงใหม่. 107 หน้า.
Baker, J.R.1958. Principles of biological micro-technique. A study of fixation and dyeing. Methuen, London. 304 pp.
Delhaize, E., B. Dell, G. Kirk, J. Loneragan, R. Nable, D. Plaskett and M. Webb 1984. Manual of Research Procedures. First edition. Plant Nutrition Research Group, School of Environmental and Life Science. Murdoch University, Australia.
International Food Policy Research Institute. (IFPRI) 1999. World Food Prospects: Critical Issue for the Early Twenty-first Century. IFPRI, Washington, D.C.
Krishnan, S., G.A.I. Ebenezer and P. Dayanadan. 2001. Histochemical localization of stroage components in caryopsis of rice (Oryza sativa L.). Current Science 80: 567-571.
Liang J.F., M.J.R. Nout and R.J. Hamer. 2005. Variation of phytic acid, iron and zinc in rice in China. pp. 400-401. Proceedings of the 15th International Plant Nutrition Colloquium, Beijing, China.
Prom-u-thai, C., and B. Rerkasem. 2001. Iron concentration in Thai rice germplasm. Development of Plant and Soil Science 92: 350-351.
Prom-u-thai, C., B. Dell, G. Thomson and B. Rerkasem. 2003. Easy and rapid detection of iron in rice grain. Science Asia 29: 213-217.
Senadhira, D., G. Gregorio and R.D. Graham. 1998. Breeding iron and zinc dense rice. Paper presented at the International Workshop on Micronutrient Enhancement of Rice for Developing Countries. Rice Research and Extension Center, Stuttgart.
Welch, R.M. and R.D. Graham. 2002. Breeding crops for enhanced micronutrient content. Plant and Soil 245: 205-214.
