The distribution of lowland and upland rice varieties in Hebei Province resistance to blast (Pyricularia oryzae),bacterial leaf blight (Xanthomonas oryzae), brown planthopper (Nilaparvata lugens), and white-backed planthopper (Sogatella furcifera) was analysed on the basis of the identification results, and the detailed study on resistance to blast and bacterial leaf blight was conducted in lowland and upland rice, maturity, rice growing region etc. The result showed that the frequency of resistant varieties to blast and bacterial leaf blight was high ,45.86% and 50.34% respectively, the high resistant rate was only 0.75% and 2.05%,and the resistant rate was 24.80% and 15.75% respectively. The frequency of resistant varieties to brown and white-backed planthopper was low, 4.50% and 3.34% respectively,2 varieties showed high resistance to brown planthopper , no varieties showed resistance and high resistance to white-backed planthopper. The frequency and strength of resistance to bacterial leaf blight in upland rice were higher than that in lowland rice .The resistant strength to blast was low in Zhangjiakou and Chengde city where the latitude and levation were high with cold climate, high in Tangshan and Qinhuangdao city, the highest in Southern Hebei odd growing sub-region, The distribution of germplasm resistance to bacterial leaf blight showed decrease succesively with the increase of latitude and decrease of tempreture.
Zhang Qixing, Zuo Yongmei
. Study on Reisstance to Disease and Insect Pests of Lowland and Upland Rice Varieties in Hebei Province[J]. Chinese Agricultural Science Bulletin, 2005
, 21(1)
: 257
-257
.
DOI: 10.11924/j.issn.1000-6850.0501257
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