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ISSN 1511-3701

Home / Archive / JTAS Vol. 41 (2) May. 2018 / JTAS-S0021-2018


Assessment of Soybean Resistance to Whitefly (Bemisia tabaci Genn.) Infestations

Kurnia Paramita Sari and Apri Sulistyo

Pertanika Journal of Tropical Agricultural Science, Volume 41, Issue 2, May 2018

Published: 31 May 2018

The use of resistant varieties is one of the best ways to control whitefly attacks. However, to date, there is no soybean variety that is resistant to whitefly. In this study, we aimed to assess the resistance of four soybean genotypes to whitefly. Anjasmoro variety was planted as a susceptible control while G100H was used as resistant control. The study was conducted in a greenhouse using a free-choice test. All soybean genotypes were planted in polybags and arranged in a randomised completely block design with three replicates. Resistance is categorised based on the intensity of leaf damage which occurred at 45-days-old plant. The leaf damage intensity was scored using two different methods. The results showed the intensity of leaf damage by using the first method varied between 7.43% (Dena 1) and 23.93% (Anjasmoro); while that of the second method ranged between 18.03% (G100H) and 37.85% (Anjasmoro). Anjasmoro was consistently classified as highly susceptible, while Gema was consistently categorised as moderately resistant to whitefly. Dena 1 and G100H were classified as moderately resistant - resistant, while Dega 1 and Devon 1 were categorised as susceptible - moderately resistant to whitefly. Resistance of soybean genotypes tested against whitefly correlated with the density of leaf trichomes. Correlation analysis shows a negative correlation between the intensity of leaf damage and the number of leaf trichomes (r = -0.29, p = 0.24) based on method 1, thus indicating a low antixenosis mechanism in whitefly resistant genotypes.