Genetic Analysis of Virescent Mutants and the Identification of Virescents υ12, υ13, υ14, υ15 and υ16 υ17 in Upland Cotton1

Abstract

Nine virescent mutants of cotton (Gossypium hirsutum L.) were tested for allelism with known virescent mutants and with each other in both greenhouse and field plantings. One mutant was allelic to υ1, two were allelic to yg1yg2, and one was allelic to υ10. One mutant gave a positive F1 allelic test with υ2, but segregation in the F2 established that it was a homoeologue of υ2. Of the remaining mutants, three were identified as simply inherited recessive mutants, and one was a duplicate factor recessive residing on the same chromosomes as υ3 and υ6.