Variation in Pod Shattering Resistance among Black Soybean Genotypes Associated with Agronomic Traits
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Date
2022-01-19
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Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumber Daya Genetik Pertanian
Abstract
Abstract. Increasing the availability of the improved black soybean cultivars in Indonesia could be done by exploring the black soybean genotypes with high yield and pod shattering resistance. This study aimed to evaluate the pod shattering resistance of black soybeans associated with agronomic traits and to identify the best genotype based on multiple traits. A total of 16 black soybean genotypes was evaluated for their pod shattering resistance and agronomic performances. The field experiment was conducted in Madiun, East Java Province, Indonesia from July to October 2020, with four
replications. Pod shattering evaluation used the oven-dry method. The identification of pod shattering using oven drying was effective to classify the shattering resistance of black soybean genotypes into resistant (5 genotypes), moderate (3 genotypes), susceptible (4 genotypes), and highly susceptible (4 genotypes). Seven genotypes yielded above the mean yield with a range of 10.13–12.51 g per plant, and three of them were resistant to pod shattering. Genotype by trait biplot indicated that seed yield per plant was positively correlated with days to maturity, plant height, number of nodes, number of branches, and number of pods. The G7 and G14 showed pod shatter resistance with the highest yield of 12.51 g and 12.07 g, respectively. These identified superior lines could be beneficial to increase black soybean yield productivity in Indonesia.
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Keywords
Soybean , Resistance, Agronomic