Abstract
Breeding materials should be evaluated under a number of different environments, to ensure their genetic value. The objective of the research was to study the potential yield of soybean lines compared to the parent in two environments. A total of 15 genotypes (including one Indonesian lowland popular variety, ‘Anjasmoro’) were grown in Jambegede (Entisol-Inceptisol association) and Ngale (Vertisol) Research Stations in June-September 2011. The design was a randomized completely blocks design with three replications. The results showed that G × E interaction highly affected the grain yield causing different rank for the genotypes in different environment. Tgm/Anj-795 and Tgm/Anj-790 lines consistently yielded the highest grain in both environments. Tgm/Anj-790 also had large seed size. Tgm/Anj-789 and Tgm/Anj-796 consistently showed the earliest days to maturity in both environments. ‘Anjasmoro’ had longer days to maturity but lower grain yield. Tgm/Anj-795 and Tgm/Anj-790 lines had potentially high yield stability that need to be tested further in many different environments to gain knowledge of their actual yield stability.
Highlights
The main goal of growing crops is to maximize net profit through increasing grain yield (Alghamdi, 2004)
The results showed that G × E interaction highly affected the grain yield causing different rank for the genotypes in different environment
In Indonesia the soybean production always decreases due to the decresing planting area (Statistic Indonesia, 2013)
Summary
The main goal of growing crops is to maximize net profit through increasing grain yield (Alghamdi, 2004). The primary goal of most soybean breeding programs is high grain yield (Toledo et al, 2000). To increase soybean growth area and production, it is important to develop the high-yielding early-maturing cultivars under a wide range of different environments (Alghamdi, 2004). The use of stable genotypes as a mean of high grain yield is very important (Carpenter & Board, 1997). In Indonesia the soybean production always decreases due to the decresing planting area (Statistic Indonesia, 2013). High grain yield soybean variety is needed to maintain or increase soybean production
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