在对1923～1995年育成的651个中国大豆品种系谱分析的基础上，计算每一育成品种祖先亲本的细胞核和细胞质遗传贡献值。在全国347个细胞核祖先亲本和214个细胞质祖先亲本中，来自东北、黄淮海、南方及国外的祖先亲本对全国育成品种细胞核与细胞质遗传贡献分别为48.23%和50.54%， 25.50%和29.49%，13.74%和16.28%，11.95%和2.92%。进一步分析了东北、黄淮海、南方三大生态区大豆育成品种的核、质来源，包括国外引种所占的从额及其特点。评选出38个对全国和三大生态区域遗传贡献最大的种质。

对全国栽培大豆不同地理、季节生态类型和一年生野生大豆不同地理生态类型的大量材料，进行形态、等位酶和细胞器DNA RFLP性状等不受人工选择直接影响的中性性状的分析。结果表明：（1）我国栽培大豆不同生态类型群体间地理生态分化明显，遗传距离较大；同一地理群体内存在季节生态分化，遗传距离相对较小；南方春豆与东北春豆熟期组相近，但其遗传距离大于与南方其他生态型的距离。（2）中国栽培大豆在地理上和季节上表现由晚熟型向早熟型进化的赵势，东北、黄淮栽培大豆各种生态型与本地区野生大豆群体的遗传距离大于与南方野生大豆群体的遗传距离，因而南方原始野生大豆可能是各地栽培大豆的共同祖先，南方原始栽培类型在向北方扩燕尾服过程中不断演化出各种早熟类型。

以六合小叶青×新沂小黑豆、上饶不死×淮阴秋黑豆、六合小叶青×南农73-935 3个要交组合植株世代的P1、P2、F1、F2、F2∶3为材料，分析了干豆腐产量的遗传规律。结果表明，3个杂交组合干豆腐产量的遗传均是1对加显性主基因和多基因混合遗传模型，干豆腐产量的遗传率较高，3个杂交组合植株世代F2∶3家系干豆腐产量的主基因遗传率分别为51.80%、59.80%、61.85%，多基因遗传率分别为48.03%、39.18%、36.12%。进行高豆腐产量选育时应以主基因选择为主，兼顾多基因的选择。

A quantitative trait could be controlled by a few major genes and many polygenes. Distinguishing the effects of major genes from polygenes and/or environments is important for understanding the expression of a major gene in relation to its genetic background, and for predicting the segregation of a cross in breeding. Our objective was to re-analyze the resistance of soybean to agromyzid beanfly by a mixed inheritance model. Number of insects in stem (NIS) was used as an indicator of resistance. The previous result from the segregation ratio of resistance and susceptibility was that resistance was controlled by one dominant gene. The major results from the mixed inheritance model were (1) the inheritance of resistance was controlled by one major gene along with minor genes; (2) Additive and dominance effects of minor genes were generally less than those of the major gene and varied among crosses, indicating different minor gene systems; (3) Heritability was higher for the major gene than for the minor genes; (4) The F2 plants and F2∶3 Lines were classified into appropriate genotypes according to their posterior probabilities and the critical value to distinguish resistant and susceptible plants was given for NIS based on the classification. These results indicated that mixed major gene and polygene genetic analyisis was superior to the frequently used classical Mendelian method.

在前人关于中国大豆栽培区域划分的基础上，根据我国各地256份大豆地方品种在南京分季播种、延长或缩短光照长度各种理条件下的生育期表现，结合供试材料的来源地地理与气侯条件、播种季节类型、熟期组归属以及光湿反应特性等因素，将我国大豆品种生态区划分为北方一熟制春作大豆品种生态区、黄淮海二熟制春夏作大豆品种生态区、长江中下游二熟制春夏作大豆品种生态区、中南多熟制春夏秋作大豆品种生态区、西南高源二熟制介夏作大豆品种生态区和华南热带多熟制四季大豆品种生态区等6大区，并在其中3个区内进一步划分亚区。