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Inheritance and Linkage of A Virescens and A Chlorina in Beta vulgaris L.¹

Inheritance and linkage relationships were studied for a chlorina and a virescens in sugarbeets, Beta vulgaris L. The virescens differed from the types previously reported as to the color of the affected leaves and the time required to develop normal pigmentation. It was conditioned by a simple recessive gene designated vi₄. Chlorina from irradiated SLC 03 seed was the same as ch₂ chlorina. Its inheritance as a simple recessive was confirmed. Linkage data showed independent inheritance for vi₄ with factors for yellow pigmentation (Y), red pigmentation (R), annual growth habit (B), Mendelian sterility (a₁), and ch₂. The ch₂ gene showed independence with R, a₃, and vi₄.

Key Words: Sugarbeet genetics • Chlorophyll deficiencie • Linkage studies

² Formerly Graduate Student (now Research Assistant, Plant Breeding Dept., Cornell University, Ithaca, N. Y. 14850) and Research Geneticist, Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Crops Research Laboratory, Utah State University, Logan, Utah.

Received for publication February 17, 1970.