Show Mottling of Soy Beans Controlled by Breeding Mottling an undesirable character of ot soy beans which has attracted a good deal of ot attention from growers during recent years seems to be largely largely large large- ly ly- lythe the result of environmental conditions conditions conditions condi condi- but there also are indications that it may be controlled to some extent extent extent ex ex- tent by breeding according to the Illinois mIno rill Illi no nois Is College of Agriculture This mottling mottling mottling mot mot- which consists of ot Irregular I I. I patches blotches or bands of ot black or brown on yellow ellow or green soy soy I beans Is undesirable because for one thing It arouses the suspicion that the I mottled variety Is not true It also iI I Interferes with the correct identification I j tion of varIeties varieties and Is particularly I objectionable In se seed d certification because because because be be- cause It brings up the question of purity and trueness to variety type That breeding may be a means of controlling mottling Is Indicated by bythe bythe bythe the fact that certain varieties show a greater tendency to mottle than others others oth oth- ers although they are all grown under under under un un- un- un der the same conditions Midwest Ito San Manchu and all mottle considerably when grown on the college farm while Dunfield and certain selections of ot the A A. A K I. variety show little or no mottling |