벼의 줄무늬잎마름병 防除에 보다 能率的이고 完全한 實效를 얻기 위해 우선 本病에 대한 抵抗性 檢定方法을 比較 檢討하고 장려 品種 중에서 抵抗性品種을 選拔하여 將來 抵抗性品種 育成의 母體를 提供할 目的으로 410品種에 대하여 抵抗性檢定을 實施하였다. (1) 集團接種과 個體接種法을 比較 檢討한 結果 發病率은 集團接種法이 多少 높은 경향이 있어 差異가 있음을 알 수 있다. (2) 發病指數에서 Lacrose는 두 方法이 모두 S였고 ZenithㆍSt. No. 1ㆍSt. No. 2는 R, 나머지는 M로 나타나 같은 경향을 보여 주었다. (3) 病徵型은 罹病性品種에서는 모두 感受性型인 A型이 많고 抵抗性品種에서는 反對로 抵抗性病徵型인 C型이 많아 두 方法이 같은 경향을 보여 주었다. (4) 410品種의 抵抗性檢定에서 抵抗性이(12品種) St. No. 1ㆍSt. No. 2ㆍ新2號ㆍGulfrosebonnetㆍArkroeㆍSunbonnetㆍZenithㆍ利川七日찰ㆍ農林24號ㆍ오백조계ㆍ양주밭찰ㆍ農林나 1號 등이고 南鮮97ㆍ149ㆍ159ㆍ216ㆍ265號, 裡里243ㆍ265, 干拓5ㆍ7ㆍ8ㆍ10ㆍ41ㆍ43ㆍ47ㆍ50號ㆍ水原56ㆍ77號ㆍ農林22號ㆍCod-4ㆍLacroseㆍ적나 등은 이병성이며, 中間性이 377品種이었다. (5) 熟期別로 볼 때 큰 차이는 없으나, 晩生ㆍ早生ㆍ中生種의 順으로 抵抗性이 컸다. (6) 장려품 중에서는 新2號 外는 거의 中間性이었다.
In order to develop an effective control measure for the rice stripe disease, methods of testing for resistance and selection of resistant varieties among the leading varieties were investigated. For use as a parent in breeding for resistant variety to the disease, total of 410 rice varieties were tested. 1. Disease occurrence was higher at group inoculation than that of individual inoculation in comparing the inoculation methods. 2. In both methods, Lacrose responded susceptible ; Zenith and St. No. 1 resistant, and the rest moderate. 3. Suseptible symptom type A was prevalant among the susceptible varieties, while resistant symptom type C was abundant among the resistant varieties, There was no difference between the inoculation methods. 4. 410 rice varieties tested could be divided into 3 groups as susceptible (21 varieties), moderate (377 varieties) and resistant (12 varieties). Resistant varieties wers St. No. 1 and 2, Shin-2, Gulfrose Bonnet, Arkrose, Sun Bonnet, Zenith, Yeechunchilichal, Norin-24, Opaikjoke, Yangchubatchal and Nonglimna-1, Nams-97, -149, -159, -216, -265, Iri-243, -265, Kanchuk -5, -7, -8, -10, -41, -43, -47, -50, Suwon-56, -77, Norin-22, Cod-4. Lacrose and Chukna were susceptible. 5. There was slight differance in the disease occurrence in regard to maturing period. However late varieties seem to be more resistant than early or medium varieties. The medium varieties seem to be susceptible. Most of the introduced varieties from foreign countries and the upland cultivated varieties were resistant. 6. Among the leading varieties, Shin-2 in Kangwon-Do was resistant, Kosi in Choongchung-Do, was susceptible, and the others were moderate.