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1990～1992在南京种植了399份材料。考察了生育期、每穗粒数、千粒重、赤霉病穗率、白粉病级、籽粒皮色、穗发芽率、株高8个农艺性状。计算了遗传参数、相关系数,并采用多维正态分布函数计算法估算了8个性状分别在经验标准、±0.25个标准差,±0个标准差3种选择压下的理论人选率.按经验标准选择的结果表明:1991年实收的218份材料中,扬州90T-27入选;1992年实收的369份材料中。北农大20074//G3256~4/Tom Thumb(选株)、Pato、916、宁9030、宁9040等5份材料入选.按±0个标准差选择,只有1992年的西藏扎达普通小麦(选株)入选.理论入选率计算结果还表明。以±0个标准差作选择时,基础群体规模以350～400份材料为宜:以经验标准作选择,以250～300份为宜.
From 1990 to 1992, 399 materials were planted in Nanjing. The growth stages, grains per spike, 1000-grain weight, panicle blight rate, powdery mildew level, grain skin color, spike germination rate and plant height were investigated. The genetic parameters and correlation coefficients were calculated, and the theoretical selection rate of eight traits under the three choices of empirical criteria, ± 0.25 standard deviations and ± 0 standard deviations was estimated by using the multidimensional normal distribution function method. The results of the standard selection show that of the 218 materials collected in 1991, Yangzhou 90T-27 was selected; among the 369 materials collected in 1992. Selected materials from North China Agricultural University (2007N / G3256 ~ 4 / Tom Thumb), Pato, 916, Ning 9030 and Ning 9040 were selected according to ± 0 standard deviation, Strain) selected.The theoretical inclusion rate calculation results also show. With a standard deviation of ± 0, the base size of the group to 350 to 400 copies of materials is appropriate: the experience of the standard to choose to 250 to 300 copies is appropriate.