I. Inheritance in Phaseolus vulgaris
菜豆的遗传：第一篇AI 解读 ↓
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菜豆的遗传：第一篇
- 研究问题
- 菜豆三代种子的重量及长宽指标能说明怎样的代际关系，如何理解Johannsen关于谱系内亲代与后代相关和回归为零的主张？
- 方法与思路
- 所给摘要介绍对Johannsen遗传实验的评述，梳理祖代种子、母代植株及后代植株的测量方式，并说明相关表格的构成。
- 材料陈述的贡献
- 材料呈现三代菜豆数据的整理与比较路径，并转述Johannsen关于谱系内后代回归谱系类型的解释，未给出评述者的最终判断。
- 阅读关注点
- 应核对个体种子与植株平均性状的统计层级、谱系内和谱系间关系的区别，以及作者如何评价被转述的零相关主张。
- 阅读边界
- OpenAlex索引摘要含明显文字识别错误，且稿件版本未注明；零相关是被评述者的主张，不能作为本文已验证的结论。
原文摘要
L Inheritance In Phaseolus vulgaris.Professor F. Johanusen has just published a summary of his recent experiments on inheritance.His work Ueber ErbUehkeit in Populationen und in reinen Linien (Fischer, Jena, 1903) is dedicated to Francis Galton, as the " SchOpfer der exakten Erblichkeitslehre"; it shows that the author has realised the importance of adequate statistical methods in any attempt to deal with the problem of inheritance, and we wish to express our gratitude to him for the courteous tone adopted in speaking of " Biometriker," and for the patient effort he has made to understand their work.Professor Johannaen's material is collected from three generations of beans: he has (1) a series of individual seeds, chosen out of a sample of about 16,000, which had been harvested and mixed together; these afford his evidence concerning the character of a grandmatemal generation ;(2) each grandmatemal bean, when sown, yielded a crop of maternal beans, the mean character (weight or length-breadth index) of those borne by one plant being taken as the measure of the maternal character of the line of ancestry to whioh the plant belongs; (3) from the series of seeds borne by each mother plant, a certain number (from two to seven) were sown, the mean characters of the seeds borne by the resulting plants being taken as a measure of the characters studied in the filial generation of each line.From these data three principal sets of tables are constructed; on p. 25, UcbcrtichUtabelU I. gives material for measuring the regression of individual filial beans on the mean weight of the maternal beans; a series of taWes on pp.21-24 gives the relation between the weights of the individual beans of the maternal plants, which were sown, and the mean weight of the seed produced by every resultant plant; finally on pp.36-37 a table is given which Professor Johannsen believes to show that the progeny of every seed, within a particular line of ancestry, exhibita a complete " Riickschlag" to the type of its line, the coefficients of correlation and regression between parent and offepring within the line being each=0.