Browsing by Author "Andi Takdir M."

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    Evaluation of Resistance of Super and Ultra Early Maturity Maize to Downy Mildew (Peronosclerospora spp)
    (Badan Penelitian dan Pengembangan Pertanian, 2013) Andi Takdir M.; Soenartiningsih
    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.
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    Identification of Super and Ultra Early Maturity Maize Lines Resistance Against Leaf Blight Disease (Bipolaris maydis)
    (Badan Penelitian dan Pengembangan Pertanian, 2013) Soenartiningsih; R. Neni Iriany; Andi Takdir M.
    The leaf blight disease is one of the major maize diseases and causes yield losses up to 70% particularly when it infects maize planting on generative phase. Therefore, The maize variety which is resistant to this one is needed. The research was aimed to identify the maize variety resistance against leaf blight disease caused by Bipolaris maydis. This study was carried out at Maros Experimental Farm from May to July 2012. A randomized complete block design with maize lines as block and three replications was utilized. Natural infection was treated on maize lines. The result revealed that from 20 BLPT lines, only BPLT 004 showed highly resistant, five lines i.e. BPLT 001, BPLT 003, BPLT 007, BPLT 008 and BPLT 012 were resistant, seven lines indicated moderately resistant reaction namely BPLT 002, 005, 009, 010, 017, 019 and 020, while BPLT 006, 013, 014 and 016 were susceptible and BPLT 011, 015 and 018 were highly susceptible. From other 20 BJMN lines, BJMN 008, 010, 012 and 013 showed resistant to leaf blight with varied intensity from 10% to 20%. Nine lines namely BJMN 001, 002, 006, 007, 014, 015, 016, 018 and 020 indicated moderately resistant, while BJMN 003, 005 and 019 were reacted susceptible to leaf blight disease and the highly susceptible lines were BJMN 003, 005 and 019. The resistance genotypes will be used as donor parents in the varietal improvement to obtain maize varieties with high yield and resistant to leaf blight disease.