Agronomic performance of soybean mutant lines based on preliminary and advance yield at dryland area

Abstract

Since 2013, researchers at ICABIOGRAD have established a development program for soybean varieties with bigger seeds, medium maturity and high productivity through cross-pollination combined with mutation by γ irradiation. In 2016, about 36 homozygous M6 lines with high productivity and excellent agronomic characteristics were selected for subsequent preliminary and advanced yield test. The research aimed to study the agronomic performance of mutant lines (M6 and M7) and to select the best lines that will be used for adaptation testing at different locations and environments. The study was conducted at the Village of Gunung Menyan, Pamijahan Sub-district, Bogor during the first and second planting season of 2017. The experiment was arranged in a randomized block design with three replications. During the first planting season of 2017, a preliminary yield testing was conducted on 36 M6 lines along with 4 check varieties. For the second season, 20 lines were selected along with 4 check varieties to be tested for advanced yield testing at the same location and method. Advanced yield trial showed that nine mutant soybean lines produced higher yields with excellent agronomic performance, which were 15-26% higher than Panderman's check varieties and 27-31% higher than the Anjasmoro check variety. The nine selected soybean line were SSD-C-M7-342-10, SSD-C-M7-350-18, SSD-D-M7-372-14, SSD-E-M7-387-1, Bulk-C-M7-458, Bulk-C-M7-493-1, Bulk-C-M7-493-20, Bulk-C-M7-499 and SSD-E-M7-404-18. These selected lines will be further assayed for adaptation at different locations and environments in the following year.