Genetic Parameter Estimation on Upland Rice Agronomic Characters in Ultisols through Diallel Analysis

MARIA AGUSTINA, SURJONO HADI SUTJAHJO, TRI KOESOEMANINGTYAS, YUSURUM JAGAU

Abstract


An estimate of genetic parameters was made to study the types of gene action in rice. A half diallel analysis was performed among seven rice genotypes with different genetical backgrounds, i.e. Situgintung, Jatiluhur, Gajah Mungkur, B8503E-TB-9-0-3, Krowal, CT6510-24-1-3, IR 64, and its 21 progenies. This experimental material was arranged in a complete block design with four replications. All observed characters had highly significant genotypic differences. The genetic parameters were estimated following Hayman method. The simple model of additive-dominance was sufficiently detected through the absence of nonalellic interaction. Productive tillers exhibited partial dominance. Heritability in a narrow sense was high. There was a positive correlation between grain yield and the number of productive tillers.

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DOI: https://doi.org/10.4308/hjb.12.3.98

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