N. Childs and J. Livezey, “Rice Backgrounder,” 2008. www.ers.usda.gov
 J. C. Delouche, N. R. Burgos, D. R. Gealy, G. Z. De San Martin, R. Labrada, M. Larinde and C. Rosell, “Weedy Rices: Origin, Biology, Ecology and Control,” FAO Plant Production and Protection Paper 188, FAO-UN, Rome, 2007.
 N. R. Burgos, J. K. Norsworthy, R. C. Scott and K. L. Smith, “Red Rice (Oryza sativa) Status after Five Years of Imidazolinone-Resistant Rice Technology in Arkansas,” Weed Technology, Vol. 22, No. 1, 2008, pp. 200-208. doi:10.1614/WT-07-075.1
 V. K. Shivrain, “Molecular Characterization of the Acetolactate Synthase (ALS) Gene and Phenotypic Diversity in Red Rice (Oryza sativa L.),” M.S. Thesis, University of Arkansas, Fayetteville, 2004.
 R. J. Norman, C. E. Wilson Jr. and N. A. Slaton, “Soil Fertilization and Rice Nutrition in Mechanized Rice Culture”, In: C. W. Smith and R. H. Dilday, Eds., Rice: Origin, History, Technology and Production, Wiley Sciences, New York, 2003, pp. 331-411.
 M. Stitt and A. Krapp, “The Molecular Physiological Basis for the Interaction between Elevated Carbon Dioxide and Nutrients,” Plant, Cell and Environment, Vol. 22, No. 6, 1999, pp. 583-622. doi:10.1046/j.1365-3040.1999.00386.x
 K. Hikosaka, “Interspecific Difference in the Photosynthesis―Nitrogen Relationship: Patterns, Physiological causes and Ecological Importance,” Journal of Plant Research, Vol. 117, 2004, pp. 481-494.
 M. J. Paul and T. K. Pellny, “Carbon Metabolite Feedback Regulation of Leaf Photosynthesis and Develop- ment,” Journal of Experimental Botany, Vol. 54, No. 132, 2003, pp. 539-547. doi:10.1093/jxb/erg052
 M. Bagayoko, S. Alvey, G. Neumann and A. Buerkert, “Root-Induced Increases in Soil pH and Nutrient Avail- ability to Field-Grown Cereals and Legumes on Acid Sandy Soils of Sudano-Sahelian West Africa,” Plant and Soil, Vol. 225, No. 1-2, 2000, pp. 117-127. doi:10.1023/A:1026570406777
 S. Gazzarrini, L. Lejay, A. Gojon, O. Ninnemann, W. B. Frommer and N. von Wirén, “Three Functional Trans- porters for Constitutive, Diurnally Regulated, and Starvation-Induced Uptake of Ammonium into Arabidopsis Roots,” Plant Cell, Vol. 11, 1999, pp. 937-948.
 S. U. Aubert, E. Gout, R. Bligny, D. Marty-Mazars, F. Barrieu, J. Alabouvette, F. Marty and R. Douce, “Ultra- structural and Biochemical Characterization of Auto-phagy in Higher Plant Cells Subjected to Carbon Deprivation: Control by the Supply of Mitochondria with Respiratory Substrates,” Journal of Cell Biology, Vol. 133, 1996, pp. 1251-1263. doi:10.1083/jcb.133.6.1251
 E. A. Schmelz, H. T. Alborn, J. Engelberth and J. H. Tumlinson, “Nitrogen Deficiency Increases Volicitin- Induced Volatile Emission, Jasmonic Acid Accumulation, and Ethylene Sensitivity in Maize,” Plant Physiology, Vol. 133, No. 1, 2003, pp. 295-306. doi:10.1104/pp.103.024174
 R. Brouquisse, J. P. Gaudillere and P. Raymond, “Induction of Carbon-Starvation-Related Proteolysis in Whole Maize Plants Submitted to Light/Dark Cycles and to Extended Darkness,” Plant Physiology, Vol. 117, No. 4, 1998, pp. 1281-1291. doi:10.1104/pp.117.4.1281
 M. H. Chen, L. F. Liu, Y. R. Chen, H. K. Wu and S. M. Yu, “Expression of α-Amylases, Carbohydrate Metabolism, and Autophagy in Cultured Rice Cells is Coordinately Regulated by Sugar Nutrient,” Plant Journal, Vol. 6, No. 5, 1994, pp. 625-636. doi:10.1046/j.1365-313X.1994.6050625.x
 T. Inamura, S. Miyagawa, O. Singvilay, N. Sipaseauth and Y. Kono, “Competition between Weeds and Wet Season Transplanted Paddy Rice for N Use, Growth and Yield in the Central and Northern Regions of Laos,” Weed Biology and Management, Vol. 3, No. 4, 2003, pp. 213-221. doi:10.1046/j.1444-6162.2003.00106.x
 L. E. Estorninos Jr., D. R.Gealy and R. E. Talbert, “Growth Response of Rice (Oryza sativa) and Rice (O. sativa) in a Replacement Series Study”, Weed Technology, Vol. 16, No. 2, 2002, pp. 401-106. doi:10.1614/0890-037X(2002)016[0401:GROROS]2.0.CO;2
 L. E. Estorninos Jr., D. R. Gealy, R. E. Talbert and M. R. McClelland, “Rice and Red Rice Interference II: Rice Response to Population Densities of Three Red Rice (Oryza sativa) Ecotypes,” Weed Science, Vol. 53, No. 5, 2005, pp. 683-689. doi:10.1614/WS-04-040R1.1
 V. K. Shivrain, N. R. Burgos, R. C. Scott, E. E. Gbur Jr., L. E. Estorninos Jr. and M. R. McClelland, “Diversity of Weedy Red Rice (Oryza sativa L.) in Arkansas, U.S.A. in Relation to Weed Management,” Crop Protection, Vol. 29, 2010, pp. 721-730. doi:10.1016/j.cropro.2010.02.010
 K. A. K. Moldenhauer, F. N. Lee, J. L. Bernhardt, R. J. Norman, N. A. Slaton, C. E. Wilson, M. M. Anders, R. D. Cartwright and M. M. Blocker, “Registration of ‘Wells’ Rice,” Crop Science, Vol. 47, 2007, pp. 442-443. doi:10.2135/cropsci2006.06.0419
 C. E. Wilson Jr. and J. W. Branson, “Trends in Arkansas Rice Production,” In: R. J. Norman, J. F. Meullenet and K. A. K. Moldenhauer, eds., B. R. Wells Rice Research Studies, Agricultural Experiment Station Research Series 550, Fayetteville, 2006, pp. 13-22.
 P. A. Counce, T. C. Keisling and A. J. Mitchell, “A Uniform, Objective, and Adaptive System for Expressing Rice Development,” Crop Science, Vol. 40, No. 2, 2000, pp. 436-443. doi:10.2135/cropsci2000.402436x
 K. Matsuda, “On the Germination of Seeds of Rice Varieties at Low Temperature (preliminary) [in Japanese],” Proceedings of the Crop Science Society of Japan, Vol. 2, 1930, pp. 263-268. doi:10.1626/jcs.2.263
 C. L. Pan, “A Preliminary Report of Varietal Differences in Rapidity of Germination in Rice,” Journal of the American Society for Agriculture, Vol. 28, 1936, pp. 985- 989. doi:10.2134/agronj1936.00021962002800120004x
 K. Wada, “Effect of Lower Temperature on Germination of Rice Seed Originating in Different Localities [in Japanese, English Summary],” Proceedings of the Crop- Science Society of Japan, Vol. 18, 1949, pp. 38-39.
 K. Sato, “The Development of Rice Grains under Con- trolled Environment. III. Germinability of Seeds Ripened under Different Environmental Conditions,” Tohoku Journal of Agricultural Research, Vol. 24, 1973, pp. 14- 21.
 H. Oka, “Tillering and Elongation Rates, Culm Length and Other Characters in Rice Varieties in Response to Temperature [in Japanese, English Summary],” Japan Journal of Breeding, Vol. 4, No. 4, 1955, pp. 213-221.
 M. L. Shen and I. T. Wey, “Studies on the Local Adaptability of Paddy Rice Varieties Using Multi-variate Linear Regression Analysis [in Chinese, English summary],” Journal of the Agricultural Association of China, Vol. 71, 1970, pp.1-13.
 N. Slaton, K. Moldenhauer, C. Wilson Jr., R. Cartwright, J. Gibbons, B. Koen, J. Bernhardt, F. Lee and J. Robinson, “Wells: A Summary of Research and Management Recommendations,” Rice Information 44, University of Arkansas Cooperative Extension Service, Fayetteville, 2000, pp. 1-8.
 X. B. Wang, P. Wu, M. Xia, Z. Wu, Q. Chen and F. Liu, “Identification of Genes Enriched in Rice Roots of the Local Nitrate Treatment and Their Expression Patterns in Split-Root Treatment,” Gene, Vol. 297, 2002, pp. 93-102. doi:10.1016/S0378-1119(02)00870-3
 I. Couee, C. Sulmon,G. Gouesbet and A.El Amrani, “Involvement of Soluble Sugars in Reactive Oxygen Species Balance and Responses to Oxidative Stress in Plants,” Journal of Experimental Botany, Vol. 57, No. 3, 2006, pp. 449- 459. doi:10.1093/jxb/erj027
 C. P. Vance and G. H. Heichel, “Carbon in N2 Fixation: Limitation or Exquisite Adaptation,” Annual Review of Plant Physiology and Plant Molecular Biology, Vol. 42, 1991, pp. 373-392. doi:10.1146/annurev.pp.42.060191.002105
 J. K. Schjoerring, S. Husted, G. Mack and M. Mattsson, “The Regulation of Ammonium Translocation in Plants,” Journal of Experimental Botany, Vol. 53, No. 370, 2002, pp. 883-890. doi:10.1093/jexbot/53.370.883
 I. Ciereszko, H. Johansson and L. A. Kleczkowski, “Sucrose and Light Regulation of a Cold-Inducible UDP- glucose Pyrophosphorylase Gene via a Hexokinase-Independent and Abscisic Acid-Insensitive Pathway in Arabidopsis,” Biochemistry Journal, Vol. 354, No. 67-72, 2001, pp. 67-72. doi:10.1042/0264-6021:3540067