Mating type, cultural characteristic, and virulence of Bipolaris maydis in Thailand
Material type:
TextPublication details: Mexico, DF (Mexico) CIMMYT : 2004Description: p. 441-450ISBN: - 970-648-116-8
| Item type | Current library | Collection | Call number | Copy number | Status | Date due | Barcode | Item holds | |
|---|---|---|---|---|---|---|---|---|---|
| Conference proceedings | CIMMYT Knowledge Center: John Woolston Library | CIMMYT Publications Collection | Look under series title (Browse shelf(Opens below)) | 1 | Available | 1K630601 |
Browsing CIMMYT Knowledge Center: John Woolston Library shelves, Collection: CIMMYT Publications Collection Close shelf browser (Hides shelf browser)
| Look under series title Bio-intensive integrated disease management of banded leaf and Sheath Blight of maize | Look under series title Biological control of asian corn borer, Astrinia furnacalis using Trichogramma evanescens and Beauveria bassiana | Look under series title Performance of maize (Zea mays L.) genotypes during post-germination drought | Look under series title Mating type, cultural characteristic, and virulence of Bipolaris maydis in Thailand | Look under series title Control of fungal infection and aflatoxin contamination in high moisture maize by carbon dioxide fumigation | Look under series title Impact of maize research and extension in Bangladesh | Look under series title Maize research in Bangladesh rural advancement committee (BRAC) |
Survey and collecting of the fungus Bipolaris maydis, the causal agent of southern corn leaf blight (SCLB), were conducted in 26 maize growing areas throughout 19 provinces in 1999-2000 and were used for studying mating type, cultural characteristics, and virulence. The results suggested that SCLB has been found in almost all maize growing areas. Pure cultures of 118 isolates were collected and were assessed for morphological and cultural characteristics on potato dextrose agar (PDA). The results showed variation among 118 isolates in colony colour, uniformity of colony colour, aerial mycelium growth, and the zonation of colour and mycelium. Mycelial growth rate of 39 selected isolates of Bipolaris maydis was significantly different after growing the fungus on PDA. One hundred and eighteen isolates of Bipolaris maydis were investigated for mating type on modified Sachs' medium (in vitro). Fifty isolates were classified to mating type Ml-1 and 68 isolates were mating type Ml-2, accounted for 42.37 and 57.63%, respectively. Pairing of opposite mating type was done on maize plants (in vivo) and the result indicated that sexual reproduction has not been found. Twenty-one representative isolates were selected and evaluated for virulence on 22 inbred lines of maize. Significant difference was found among tested isolates and they showed no identical virulent patterns among them.
English
0502|AGRIS 0501|AL-Maize Program
Juan Carlos Mendieta
CIMMYT Publications Collection