4. Further studies have been made with chromosomal interchanges and the Minn. #13 smut resistant inbred line first reported by Saboe and Hayes, Jour. Amer. Soc. Agron. 33: 463-470. The long arms of #3, #7, and #8 and the short arm of #6 seem definitely to carry factors for smut reaction.

Lewis C. Saboe