Classification of Seed Resistance of Various Genotypes of Sorghum ( Sorghum bicolor [L.] Moench.) to Weevil ( Sitophilus sp.) During Storage

摘要

Background and Objective: The supply of sorghum seed faces the problem of a weevil pest ( Sitophilus sp.) during storage. The objective of this experiment was to determine the seed resistance of various genotypes of sorghum to weevils during storage, both in high and low temperature was conducted using a "choice method" based on painter theory. Materials and Methods: Three kinds of "choice method" (with the challenge, no challenge and control) were used to evaluate seed resistance to weevil of 34 genotypes of sorghum in Indonesia. This two-factor experiment (genotype and kind of method) was applied in a randomized complete block design with three replications. Results: There were differences in the weevil numbers in the three with "choice methods" and on seeds resistance to weevil among sorghum genotypes. There was significantly correlated between the weevil numbers and the percentage of damaged seeds with r = 0.98 (pConclusion: The seed resistance of various genotypes of sorghum in Indonesia to weevil was different. The most vulnerable genotype (Numbu) was three times preferred by weevil compared to that the most resistant genotype (Samurai-1). Seed resistance to weevil could increased by reducing the temperature of storage room.