Identification of Jilin''''s Maize Germplasm Resistance to Curvularia Leaf Spot
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S435.131.4

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    Abstract:

    Curvularia leaf spot(CLS)was caused by Curvularia lunata mainly as well as other Curvularia species.In recent years the occurrence area of CLS was enlarged continually and the disease was became one of the important disease in main production zone of maize in China.In this studies the results showed that there were a mainly difference in resistance to CLS in maize hybrids,which were grew in Jilin Province,and inbred lines.Of the inbred lines Ji63,Huangzaosi,Zi 330,Dan 9046,Dan 9041,Tie 7922,Ye 478,Shen 5003,Dan 340 and E28,which were widely used as parents in the past breeding programs,were susceptible.Some new parent lines,which selected from 78599 line and some tropical and subtropical lines,were resistant.The resistance level of hybrids was closely related with the resistant level of the parents.In the field the resistance in seedling was highest and lowest in tasselling stage,that means the plant resistance level was dropped when the plant grow up.

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History
  • Received:October 12,2005
  • Revised:June 08,2006
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