The Fluorescent Seedling Character in Ryegrass-Tall Fescue Hybrids and its Relation to Nutritive Value Index and Rust Resistance

Abstract

A fluorescent character was found in the progenies of annual ryegrass-tall fescue hybrids. Fluorescent percentage, rust resistance, and NVI were examined in the first-generation self, open-pollination, and polycross progenies of five parent plants. Fluorescence percentage of progenies of some parents showed th. at fluorence is controlled by a single dominant gene. However, results of the progeny of other lines suggested the infiuence of modifying genes. Significant differences were not obtained between fiuorescent and nonfluorescent plants for rust resistance and NVI; however, difEerences among lines for rust resistance were significant.