Abstract:

To select peanut cultivars which are resistant to bacterial wilt and suitable to grow in Xinyang of Henan Province, 27 peanut cultivars were planted with bacterial wilt root soaking in field, and the incidence rate and disease index were calculated. Then we carried out disease resistance identification and screening. The results indicate that there are 10 cultivars with high and medium resistance to bacterial wilt, accounting for 37% of the total, among the 3 cultivar types, 2 are resistant to the disease. The occurrence regularity of 6 resistant cultivars shows that the disease index increases rapidly on the 7^th and 14^th day, and there is no change after 21 days. The high oil type ‘Yuanza 9102’ and ‘Xinhua 425’, high oleic type ‘Xinhua 14’ and ‘Zhuhua 11’, and ordinary type ‘Yuanza 21’ and ‘Yuhua 149’ are disease-resistant cultivars suitable for cultivation in Xinyang.

Key words: Peanut, Bacterial Wilt, Identification, Disease Resistant Variety, Screen