Genetic variability of Corynespora cassiicola populations in Thailand.


Citation

Tragoonrung S., . and Romruensukharom P., . and Vanavichit A., . and Toojinda T., . Genetic variability of Corynespora cassiicola populations in Thailand. pp. 38-49. ISSN 1511-1768

Abstract

Differential clones and random amplified polymorphic DNA markers were used to investigate the genetic diversity among twenty-four isolates of Corynespora cassiicola from rubber plantations in Thailand. According to the virulence reaction the isolates were classified into eleven pathotypes. However cluster analysis of RAPD data separated isolates into three groups and no correlation between different RAPD groups pathotype or geographical region was detected. Analysis of the molecular variance revealed that 54.97 of total genetic diversity was due to variation among isolates within the regions and 45.03 came from variation between regions. The genetic differences in C. cassiicola populations provide important information for studies on disease resistance which will be useful in the choice of breeding strategies to develop resistant rubber clones.


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Abstract

Differential clones and random amplified polymorphic DNA markers were used to investigate the genetic diversity among twenty-four isolates of Corynespora cassiicola from rubber plantations in Thailand. According to the virulence reaction the isolates were classified into eleven pathotypes. However cluster analysis of RAPD data separated isolates into three groups and no correlation between different RAPD groups pathotype or geographical region was detected. Analysis of the molecular variance revealed that 54.97 of total genetic diversity was due to variation among isolates within the regions and 45.03 came from variation between regions. The genetic differences in C. cassiicola populations provide important information for studies on disease resistance which will be useful in the choice of breeding strategies to develop resistant rubber clones.

Additional Metadata

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Item Type: Article
AGROVOC Term: Genetic variability
AGROVOC Term: Corynespora cassiicola
AGROVOC Term: Clones
AGROVOC Term: Random amplified polymorphic DNA
AGROVOC Term: Pathotypes
AGROVOC Term: Hevea brasiliensis
AGROVOC Term: Disease resistance
AGROVOC Term: Breeding
Depositing User: Ms. Suzila Mohamad Kasim
Last Modified: 24 Apr 2025 06:28
URI: http://webagris.upm.edu.my/id/eprint/23109

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