Evaluation of Resistance of Super and Ultra Early Maturity Maize to Downy Mildew (Peronosclerospora spp)
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Date
2013
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Badan Penelitian dan Pengembangan Pertanian
Abstract
Downy mildew (Peronosclerospora spp) is one of the major diseases in maize production. The
objective of this study was to evaluate the resistance of super and ultra early maturity maize against downy mildew.
The experiment was conducted from May to July 2012 at the experimental field of Indonesian Cereal Research
Institute in Maros, South Sulawesi Indonesia. There were 50 varieties and lines evaluated, which consisted of 25
BGJH varieties and lines and 25 BDLM varieties and lines. There were two check varieties used, namely Anoman–
1 as susceptible check and Bima 10 as resistance check. The experiment was arranged in a randomized block
design with three replications. The result showed that from BGJH varieties/lines there were three varieties considered
to be resistant to downy mildew disease, namely: BGJH 011, BGJH 017 and BGJH 020. 16 varieties and lines were
categorized as moderately resistant and one variety, BGJH 013, was susceptible. There were five highly susceptible
varieties namely BGJH0 12, BGJH 014, BGJH 023, BGJH 024, BGJH 025. Meanwhile, in the BDLM varieties/lines there
were four varieties considered to be resistant, namely BDLM 005, BDLM 011, BDLM 012 and BDLM 018. Sixteen
varieties/lines showed moderately resistance reaction, namely BDLM 001, 002, 003, 004, 006, 007, 008, 009, 013,
014, 015, 016, 017, 019, 020, 021 and 025. The highly susceptible varieties were BDLM 010, BDLM 022, BDLM 023,
BDLM 024. The resistant genotypes will be used for varietal improvement in maize breeding programs.