Variability of Grain Protein Content in Improved Upland Rice Genotypes and Its Response to Locations
2011
Totok A.D.H., Suwarto, A. Riyanto, D. Susanti, N. Farid, I.N. Kantun, Suwarno and Shao-Hui Zheng
To search for genetic resources of high grain protein content in upland rice, the variability and genotype × location interaction ofthe protein content was studied by a field experiment. The materials used were 10 improved genotypes and two reference uplandrice cultivars. The experiment was carried out at seven different locations in rainy season of 2008/2009. Genetic variability forgrain protein content among the genotypes was confirmed which leads to the possibility for breeding of high grain proteincontent in upland rice.Genotype × location interaction influenced grain protein content of upland rice indicating that thegenotypes gave different responses to the variation of locations.The genotypes namely UNRAM 4E, UNRAM 9E, UNRAM 17Ewere found to be the high protein content resources. These three genotypes, with stable protein content across locations, may beconsidered as genetic material for further development of high protein content upland rice cultivar. This finding might be veryuseful to improve nutritional status of poor people in the rural areas especially in east Indonesia (Lombok, Sumbawa) andsemiarid areas with low rainfall.
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