Inheritance in Nicotiana tabacum. XI. The Fluted Assemblage

摘要: 1. By loss of an F-chromosome, probably as a consequence occasional non-conjunction, N. tabacum var. purpurea produces the monosomic, fluted. 2. When selfed, fluted has produced further variants distinctive recessive types, coral and mammoth, both which have been established in pure lines. 3. From crosses with fluted, mammoth shown to be due secondary modification F-chromosome. 4. Coral when crossed normal or each other, produce hybrids type, which; however, exhibit frequent non-conjunction F-chromosomes. 5. reason this F2 other derivative populations from these contain some haplo-F triplo-F individuals addition expected classes offspring. 6. Hybrids apparently no crossing-over between two modified 7. Some X segregated for pale sterile owes its sterility ...