稻白葉枯病之研究　Ⅰ.接種方法之檢討及稻品種抗病性測定

Studies on the Bacterial Leaf Blight of Rice Plant 1. Discussion on the Inoculation Methods and the Selection of Resistance Rice Varieties.

簡錦忠(C. C. Chien) ； 洪雲卿(Y. C. Hung)

《中華農業研究》 19卷1期 (1970/03) Pp. 46-50

https://doi.org/10.29951/JARC.197003.0006

摘要

本試驗爲檢討稻白葉枯病之接種方法，並行稻品種抗病程度之測定。所得結果簡述如下
供試70稻品種經浸水接種法與針刺接種法之結果，經t值側驗得(方程式略)，即表示兩種接種法所得結果並不顯著，故浸水接種法對於稻幼苗期行大批品種或品系測定抗病程度時賓爲一可行之方法。
供試稻品種中均無極抗病（發病度0%）及極感病（76%以上）的品種，屬於抗病(1~15%)者有13種均屬蓬萊稻(Japonica type),，屬於中抗（感）(16~35%)者有49種，當中蓬萊稻佔37品種，在來稻(Japonica type)佔12品種，屬於感病(36~75%)者有8種，當中蓬萊稻僅有1品種，在來稻佔7品種，由此可知本省在來稻對白葉枯病之罹病程度較蓬萊稻爲高。

並列摘要

The purpose of this study was to select the inoculation method and test the degree of resistance of rice varieties to bacterial leaf blight. The results could be summarized as follows:
From t test, (The equation is abbreviated), the result indicated that the t value was not significant, it also said that the difference between soaked inoculation method and the bundled needle inoculation method was not significant. Since the bundle needle inoculation method is a practical method, the soaked inoculation method is also one of the most accurate and practical methods easily to induce the disease outbreak and to diagnose the difference in resistance by varieties when a large number of rice plants were inoculated during the seedling stage.
Among seventy rice varieties, so far tested, none was belong to highly resistance or highly susceptible grade. 13 varieties included in resistance grade (degree of susceptibility 1-15%), most of the varieties belong to medium resistance grade, the degree of susceptibility were from 16-35% and 8 varieties included in susceptible grade(degree of susceptibility 36-75%). All resistance rice varieties, so far tested, belong to japonica type. Among 49 varieties, medium resistant to bacterial leaf blight, 37 were japonica varieties and 12 were indicas. Eight rice varieties included in susceptible grade, all belong to indica type, except the Kaohsiung-yu 637. Indica varieties seem to be more susceptible to bacterial leaf blight than the japonicas.