Establishment of integrated pest management on soybean using insect resistant genotypes: a challenge for plant breeder and entomologist
2002
Suharsono | Adi, M.,Balai Penelitian Tanaman Kacang-kacangan dan Umbi-umbian, Malang (Indonesia)) | Igita, K.
Soybean has a major role in farming system in Indonesia, especially, as secondary food crop after rice. A number of insect pests, however, attack soybean at different growth stages and become the main constraint to soybean production in Indonesia. The success of rice self-sufficiency in 1984, among others through the implementation of integrated pest management (IPM) program has inspired the government to adopt the IPM program for soybean in 1990. As consequence, studies on other components of IPM such as crop improvement and cultural, mechanical, biological, judicious insecticide controls should be intensified. In IPM the population of insect pests should be controlled under their economic threshold population may fluctuate under lower level of threshold damage. The introduction of pest-resistant plant, however will slow the insect development down as the presence of the adverse effects of the plants on the insect biology. The resistant variety, therefore, will increase the IPM stability of soybean. The extensive study found that introduced soybean genotypes IAC-80, IAC-100, Sodendaizu, Miyako white, Kosamame and Himeshirazu were identified to possess some degrees of resistance to armyworm S. litura. In corporation with JIRCAS, intensive crossings between these resistant and susceptible genotypes were undertaken. The result indicated that antibiosis was identified as the main resistance mechanism both in parents and the following generations. The uncertain recessive gene was suspected to control the resistance character
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