大杯香菇辐射选育新株系数量性状的因子分析

对20个大杯香菇品种和辐射选育新株系的数量性状进行因子分析.结果表明,20个大杯香菇品种和辐射选育新株系的18个数量性状,可提取为7个公因子,其累积方差贡献率达91.85 %,代表了所有性状绝大部分相关信息.按照主因子所包含的性状及其所反映的生物学、营养学和酶学含义,可把7个主因子命名并按方差贡献大小顺序排列为：促长因子1、CAT活性因子2、营养质量因子3、MDA因子7、化学评分因子4、氨基酸比值系数分因子5、粗壮因子6.从主因子出发进行大杯香菇辐射育种,可以加大目标性状的针对性的选择效率,比较容易获得综合数量性状优良的新品种.

Analysis on the Factors Affecting Quantitative Characters in New Radiated Mutants of Lentinus giganteus

The factors affecting quantitative characters in 20 strains or new radiated mutants of Lentinus giganteus have been analyzed. Results showed that, the 18 factors affecting quantitative characters could be divided into 7 common factors which the accumulated variance contribution rate reached 91.85 % and represented most of related information. According to the included characters of main factors and their reflected meanings in biology, nutriology and zymology, these 7 common factors could be named and listed by the order of variance contribution rate ： growth-promoting factor 1, CAT activity factor 2, nutrition quality factor 3, MDA factor 7, chemical score factor 4, score of ratio coefficient of amino acid 5 and sturdy factor 6. Radiation breeding of Lentinus giganteus by analyzing these 7 main factors will increase the selection efficiency of target characters and thus easily to obtain the new mutants with excellent comprehensive characters.