Grain Yield, Stability and Adaptability of 11 Prospective Genotypes Across 16 Multilocation Trials

Abstract

Maize breeding in Indonesia is not only directed to obtain new cultivars with high grain yield potential in arable soil with favourable weather but also must be able to adapt well to the alteration of agro-climatic condition throughout Indonesia. The objective of this study was to evaluate and filtering grain yield, adaptability and stability of 11 (eleven) new hybrid maize prospective genotypes conducted at 16 locations in 4 (four) provinces with the different agro-climatic condition. Eleven new hybrid maize prospective genotypes which consisted of 5 single cross hybrids and 6 three-way cross hybrids were evaluated for grain yield in this study. These 11 prospective genotypes were the outcome of a breeding program which began in 1997. As control cultivars, BISI 18 and Sukmaraga were selected. BISI 18 represented hybrid maize cultivars, especially single cross hybrids, while Sukmaraga represented open-pollinated maize cultivars. The result of this study showed that four prospective genotypes which performed better or equal with BISI 18, which were SSUSX48274, SSUSX06145, SSUSX76844 and SSUSX68849 can be released as new national superior varieties to compete with BISI 18 in maize production center of Indonesia.