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将具有不同风味品质的7个自交系,用其中风味品质最优和最劣者作为亲本 P_1和 P_2,配制成 F_1,F_2、BC_1P_1、BC_1P_2共11个群体,来研究大白菜风味品质的性状相关及遗传规律。结果是风味品质与蛋白质、粗纤维、还原糖相关极显著;与固形物相关显著;与维生素 C、原果胶水溶果胶、叶缘素无显著相关.将这8个性状组成28种比值作为自变量,经简单相关分析后,再将与风味品质相关紧密和极紧密的15个自变量,进行回归分析。当采用 F_(0.(?))水准分析,其最优回归方程为 y=0,7354+0,0123x_1+3,4432x_2(x_1为蛋白质含量、x_2为还原糖/粗纤维单位为毫克/克干重);当采用 F_(0.01)水准分析时,其最优方程为 y=2,3342+4、2037x(x 为还原糖/粗纤维)。由于蛋糖、蛋纤、糖纤的简单相关系数分别为0,5864、—5135和—O,7348,故也可用 y=—1.7+0.0444x(x:还原糖)的方程做近似估计.粗纤维、蛋白质的广义遗传力在50%左右,还原糖则近似64%;狭义遗传力三者相近,在47.74～64.38%之间.控制粗纤维的基因对数似乎是3对,蛋白质、还原糖则为1对,同时受环境敏感基因影响较大.这些与风味相关的性状属于劣亲本不完全显性,杂种优势偏于负值。
Seven inbred lines with different flavor qualities were used to study the traits of Chinese cabbage quality with the best and the worst flavor quality among them P_1 and P_2 and F_1, F_2, BC_1P_1 and BC_1P_2. Related and genetic laws. The results showed that the flavor quality was significantly related to protein, crude fiber and reducing sugar, significantly related to solids, and no significant correlation with vitamin C, pectin, pectin, Independent variables, after simple correlation analysis, and then with flavor quality closely and very close to the 15 independent variables, regression analysis. The optimal regression equation was y = 0,7354 + 0,0123x_1 + 3,4432x_2 (x_1 is the protein content, x_2 is the reducing sugar / crude fiber in mg / g Dry weight). When the F_ (0.01) level was used, the optimal equation was y = 2,3342 + 4,2037x (x is reducing sugar / crude fiber). Since the simple correlation coefficients of egg, egg and sugar are 0,5864, -5135 and -0, 7348 respectively, it can also be approximated by the equation of y = -1.7 + 0.0444x (x: reducing sugar) The broad heritability of fiber and protein was about 50%, while the reducing sugar was about 64%. The heritability of narrow sense was similar between 47.74% and 64.38%, and the number of genes controlling crude fiber seemed to be 3 pairs. Protein, reducing sugar Then it is one pair, and it is more influenced by the environmental sensitive genes at the same time.These flavor-related traits belong to inferior parental dominance and heterosis to negative value.