| Summary: | ABSTRACT
Competition for light radiation is one of the factors causing highly yield reduction in the intercropped mungbean. Using tolerant genotype is an alternative to get small yield lose. The aim of the experiment was to study the yield performance and tolerance of five genotypes of mungbean to shading. The experiment was conducted at Station research of ILETRI (Indonesian Legume and Tuber Crops Research Institute) of Malang, from February to May 2004. Five genotypes of mungbean (VC2768B, Kenari, Local Wongsorejo, Nuri and MLG 431) were tested in four shading levels (0, 25, 50 and 75%). The treatment was arranged according to Randomized completely block design with three replications. Data was analyzed by combining analysis across shading levels. The tolerance was judged based on tolerance index to stress. Result of the experiment showed that yield performance of mungbean of 75% shading level was 34.01% and 65.21% lower than those of 50% and 25% shading levels. Mean productivity (MP), geometric mean productivity (GMP) and stress tolerance index (STI) were good indicators to identify mungbean genotypes with high yield and tolerance to shading. VC2768BB.. Kenari and Local Wongsorejo were genotypes tolerance to level of shading up to 75%.
Key words: Mungbean, yield, tolerance and shading.
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