A yellow-leaf seedling marker, r, was used to determine if there was pref er en tial chromosome pairing in a group of tetraploid southern highbush blueberry hybrids. Plants with four copies of r (no copies of R) fail to develop anthocyanins, and cotyledons, hypo co t yls, leaves, stems, and other vegetative tissues have a bright yellow-green color. In the hybrids that were studied, two genomes ...
