X-ray-induced deficiencies of chromosome 11 in the tomato.

Abstract

The tomato linkage group V, including the markers at and hl, was identified with chromosome 11 by means of the radiation-induced deficiency method. Terminal deficiencies were induced in both arms and an interstitial deficiency ln one arm of chromosome 11, and plants monosomic for this chromosome were also cytologically identified in the progeny. The gene a/sub 1/ resides in the achromatic region of the long arm and hl in either the achromatic or chromatic close to the junction of the two in the short arm of chromosome 11. The significance of survival of tomato monosomics in this test is discussed. (auth)