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The Journal of Heredity 1954:45(5):241-248
© 1954 The American Genetic Association 45:241-248

research-article

NEW TOMATO SEEDLING CHARACTERS AND THEIR LINKAGE RELATIONSHIPS

RICHARD W. ROBINSON, and CHARLES M. RICK*

Abstract

Four new tomato seedling mutants, each conditioned by a recessive gene, are described. Three of these-dv, rv, and yv-are virescent in the respect that they cause a partial breakdown of chlorophyll formation, which is most acute at the growing point and least severe in older leaves. The fourth mutant, tf, is characterized by leaves that are reduced in breadth and number of segments. Normal F2 ratios were obtained for tf; a deficiency of homozygous recessives was observed for the others. In all other respects inheritance was normal and segregations well-defined.

Linkage relations were analyzed among the four new- mutants and the previously described dl and between them and a group of standard linkage markers. No indication of linkage was found for yv. The other genes were found to be linked as follows: dv-6-m-1-d; l-27-bu-9-dl; rv-24-e; tf-13—new wilty gene found in parent stock.


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