지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2005.12
- 수록면
- 322 - 327 (6page)
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초록· 키워드
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Regression models for determining infection periods of apple white rot were developed based on conidial germination and appressorium formation of Botryosphaeria doth idea. A total of 120 apple fruits were inoculated with the fungal conidial suspension and subjected to 6 temperatures and 10 wetness periods. Conidia germinated and produced appressoria, exhibiting swollen tips of germ tubes on the fruit surface. Conidial germination (G) increased with temperature (T) and wetness period (W), and was described as G=-89.273+7.649T+7.056W-0.109T²-0.085W²-0.066TW (R²=0.75). Less than 2 hr of wetness period were enough for conidia to germinate at 25 to 30℃. Effects of temperature and wetness period on appressorium formation (A) could be explained as A=-1.540-2.375W+0.045W²+0.213TW (R²=0.77). The relationship between conidial germination and appressorium formation (A<SUB>g</SUB>) was described as Ag=0.381-0.227G+0.005G2(R²=0.67), suggesting that conidial germination may have to reach approximately 43.7% to initiate appressorium formation. Using the regression equation for conidial germination and the criterion of 43.7% conidial germination, an infection model was developed to determine infection periods based on temperature and wetness period. The infection model with the criterion of 43.7% conidial germination was apparently more conservative than the appressorium formation model in determining possibility of apple infection. The infection model seemed sensitive to variable weather conditions, suggesting possible use of the model for timing fungicide sprays to control white rot of apples in practice.
목차
Materials and Methods
Results
Discussion
Acknowledgments
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UCI(KEPA) : I410-ECN-0101-2009-481-017570823