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在四川生态条件下对72份来自广东的水稻种质资源的抗稻瘟病性和农艺性状进行了观察。结果表明,多数广东水稻种质在四川生育期属中籼中、迟熟类型,株高相对较低,分蘖较强,穗子中等偏小,结实率、千粒重及单株产量较低。通过农艺性状表型聚类可将72份广东水稻种质分为3大类,Ⅰ类20份,属中等穗型,平均结实率83.3%;Ⅱ类21份,属大穗型,平均穗着粒180粒左右;Ⅲ类31份,其生育期较短,植株较矮,穗子较小。稻瘟病抗性鉴定表明,颈瘟1～3级的抗病品种52个,占72.2%,其中丰丝占1号等6个品种叶瘟1～2级,颈瘟1级,高抗稻瘟病。对广东水稻种质在四川利用的策略进行了讨论。
The resistance to blast and agronomic traits of 72 rice germplasm resources from Guangdong Province were observed under ecological conditions in Sichuan Province. The results showed that most of the Guangdong rice germplasms were medium and late-maturing in the middle-season indica rice in Sichuan, with relatively low plant height, strong tillers, medium-small tassels, low seed setting rate, 1000-grain weight and single plant yield. According to the phenotypic cluster of agronomic characters, 72 Guangdong rice germplasms can be divided into 3 major groups and 20 species of Ⅰ class, belonging to medium panicle type with the average seed-setting rate of 83.3% and 21 class Ⅱ, About 180 grains; class 31, its growth period is shorter, shorter plants, ears smaller. The identification of blast resistance showed that 52 resistant varieties (1 ~ 3) accounted for 72.2% of the total, among which 6 varieties including Fengsian 1 were 1 to 2, 1 for neck blast, 1 for blast resistance . The strategy of utilizing rice germplasm in Sichuan Province in Guangdong was discussed.