| Autor: |
Palaversic, Branko, Jukic, Mirko, Buhinicek, Ivica, Vragolovic, Antun, Kozic, Zdravko |
| Přispěvatelé: |
Csaba, Marton L. and Motto, Mario |
| Jazyk: |
angličtina |
| Rok vydání: |
2009 |
| Předmět: |
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| Popis: |
Anthracnose stalk rot (ASR) caused by the fungus Colletotrichum graminicola (Ces.) G.W. Wils. has become one of the predominant stalk rot diseases of maize worldwide. In Croatia, maize anthracnose is an important disease, especially in the western, humid areas. Anthracnose is best managed through the use of resistant hybrids ; hence breeding for resistance is the most effective mean of stalk rot control. This investigation was aimed at analyzing how successful the program of breeding for resistance to stalk anthracnose was with the lines Bc10 and Bc19064 used as sources of resistance. Pedigree selection was used under artificial stalk inoculation. Two trials with lines were planted in Rugvica in 2007 and 2008. Stalk inoculation was made 7 days after flowering. Resistance was estimated at harvest based on outer stalk discoloration (1-9). Three original lines and 18 newly developed lines were compared for resistance. The resistance of susceptible lines Bc14, Bc14478 and Bc473E-5 was significantly improved from 6.6, 3.8, and 5.4 down to 1.1, 1.1 and 1.3 respectively. Hybrid combinations with newly developed lines were tested in 5 yield trials at one or several locations in 2005, 2006, 2007 and 2008. Mean yield for hybrids were significantly higher or at the level of standard hybrid. These results prove the effectiveness of breeding for resistance to stalk anthracnose. Application of artificial inoculation technique can be recommended in breeding process and the domestic lines Bc10 and Bc19064 as sources of resistance. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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