Germplasm: AKER_12194

AKER_12194

PI 664915

https://doi.org/10.15454/SR8E31

EL60 is a broad genetic base self-sterile diploid selected for tolerance to Cercospora leaf spot, Rhizoctonia crown and root rot, and Aphanomyces root rot. EL60 was constructed through a series of polycrosses involving EL50, EL51, SR96, SR97, EL0204, SP6822, EL40, EL55, and some previously unreleased traditional East Lansing breeding lines from the 1980's.

EL60 was selected and combined for introgression of yield potential and tolerance to Cercospora leaf spot and Rhizoctonia crown and root rot. EL60 was constructed in a 2007 greenhouse polycross and is seed harvested from 51 mother roots selected for root size and freedom from disease of populations EL-A019297, EL-A014981, and EL-A014963, which themselves were products of polycrosses with similar materials in previous years, and which had last been selected in the 2006 Cercospora leaf spot nursery in Saginaw, Michigan. EL60 was tested as EL-A021740 in the 2011 Cercospora nursery where it had a score of 3.0, not statistically different than the resistant check, at the final reading (scale 1 = no disease, 9 = dead), in the 2011 Rhizoctonia nursery where it had a score of 2.5, not statistically different than the resistant check, and in the 2011 Shakopee Aphanomyces nursery with a score of 5.8, also not statistically different than the resistant check.

United States of America