Genetic Control of Iron Content in Rice Grain
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Abstract
This study was designed to determine genetic control of grain iron in rice (Oryza sativa L.). High grain iron varieties, CMU122 and IR68144, and low grain iron varieties, KDML105, Kam Doisaked (KDK) and Chainat1 (CNT1), were used as parents. Crossing was made at faculty of Agriculture, Chiang Mai University during 2004 growing season. Five hybrid combinations were obtained, including CMU122 x CNT1, CMU122 x KDML105, CMU122 x IR68144, IR68144 x CNT1 and KDML 105 x KDK. F1 hybrids and parents were sown in duplicate pots, 10 plants per pot. Plants were grown to maturity and iron in the rice grain were analysed. Grain iron of the F1 from CMU122 x IR68144 and IR68144 x CN1 were the same as high iron parents. Those from CMU122 x KDML105 and CMU122 x CN1 crosses were intermediate between parents but close to high grain iron parent, CMU122. These results indicated that grain iron in rice was controlled by partially to fully dominant gene action. As dominance was involved, progeny testing is required in selection for high iron in segregating population such as early generations or backcross population in breeding program.
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อุทุมพร สิทธิสิงห์, Marc Van der Putten, สาคร ธนมิตต์ และแสงโสม สีนะวัฒน์. 2545. การวิจัยปฏิบัติการในการควบคุมและป้องกันภาวะพร่อง/ขาดธาตุเหล็กและโลหิตจางจากการขาดธาตุเหล็ก ในหญิงวัยเจริญพันธุ์ในโรงงานอุตสาหกรรม จ. ฉะเชิงเทรา. กองโภชนาการ กรมอนามัย กระทรวงสาธารณสุข.
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.
Graham R.D., R.M. Welch and H.E. Bouis. 2001. Addressing micronutrient malnutrition through enchancing the nutritional quality of staple foods: Principles, perspectives and knowledge gaps. Adv. Agron. 70: 77-142.
Gregorio G.B. 2002. Progress in breeding for trace mineral in staple crops. J. Nutr. 132: 500s-502s.
Gregorio G.B., D. Senadhira, H. Htut and R.D. Graham. 2000. Breeding for trace mineral density in rice. Food Nutr. Bull. 21: 382-386.
Prom-u-thai C. 2003. Iron (Fe) in Rice Grain”. Ph.D. Thesis, Chiang Mai University, Chiang Mai. 227 pp.
Prom-u-thai C. and B. Rerkasem. 2001. Grain iron concentration in Thai rice germplasm. Development of Plant and Soil Science 92: 350-351.
Senadhira D., G.B. 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.
World Health Organization. 2000. Reduction of iron deficiency and anemia (IDA). Progress report in a global agenda for combating malnutrition. Nutrition for Health and Development (NHD), WHO, Geneva.
