Abstract
This study aimed to determine the antixenosis of soybean genotypes and the resistance to pod borer. 16 successful lines of soybean were used. Planting dates were arranged in a way to integrate the flowering period of 16 promising lines of soybean. For two days, a pair of four-day adult pod borers were infested in each plant at the R4 stage. The result revealed that the difference in soybean promising lines had a major impact on the population of egg and larva, and on the pod damage severity. The lowest egg (1 egg/plant) was identified in Grb/Myp-16 and GH-Gn-8, while the lowest larval population (1 individual/plant) was in GH-Gn-8. The lowest impaired pod intensity was found on Grb/Myp-16 and Brg/Myp-13. The weight of the seed ranged from 2.4 to 6.5 g/plant. The trichome density ranged from 28.3-72/mm 2 with three different positions (leaning, skewed and upright). In summary, four soybean promising lines were consistently resistant to pod borer, Brg/Myp-13, Grb/Myp-16, GH-Gn-8, and GH/KR-13. The resistance was antixenosis or non-preference as both a place to lay eggs so as a feed. These lines had the possibility as a genetic source to improve resistance to Etiella zinckenella.
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More From: IOP Conference Series: Earth and Environmental Science
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