Keragaan Pertumbuhan dan Hasil Beberapa Genotipe Kedelai Berbiji Besar dalam Kondisi Naungan
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Date
2021-09-15
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KOMISI NASIONAL SUMBER DAYA GENETIK
Abstract
In order to support national program on increasing soybean production through expansion of cultivation area, soybean can be planted as intercropped with perennial or other food crops. The major problem of this practice was low light intensiy received by soybean plants which affect growth and yields. The aim of this study was to observe growth and yield performace of large-seed soybean genotypes in shade condition. The research was conducted at Cisarua, Bogor in 2019 using split plot design with three replications. The main plot was consists of 2 levels of shade (without shade and 50% paranet shade) and 7 soybean genotypes as the subplot. Shade has been given since planting to harvesting. Result showed that there were differences in genotypes response to shading. The 50% paranet shade treatment significantly decreases number and dry weight of leaves, diameter of stem, number of branches, number of filled-pods and seed yield, but increase the contain of klorofil a and klorofil b, plant height, flowering days, maturity days,and 100 seed weight. Seed yield on the 50% shade decrease between 3.87% on Biosoy 1 to 33.91% on Lokal Tegal. Stress tolerance index (STI) was 0.30 (Lokal Tegal) until 1.17 (Biosoy 1). Based on filled-pods and yield decreasing percentage and STI value that is higher than shade tolerant variety Dena 1, Biosoy 1 dan genotype 04452/Wilis were identified as large-seed soybean adapted to shading.
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Large seed, shade tolerance, soybean