INHERITANCE IN NICOTIANA TABACUM. XVIII. MONOSOMIC ANALYSIS

T H E FIRST accounts of monosomics in Nicotiana Tabacum ( CLAUSEN and GOODSPEED 19268, b) reported establishment of two types and demonstrated that one of them, haplo-C (then called "corrugated)'), involved the chromosome in which the basic color factor, Wh, is located. These results were the beginning of a program designed to establish as many monosomic types in Tabacum as possible and to take advantage of their favorable features for analytical studies of Mendelian characters. The investigations have now progressed to a successful isolation of 24 different monosomics which are believed to represent a complete set of the primary types.

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