EXPERIMEXT STATION REPORT. 473 



Yello-w Foliage in Tomatoes. 



Certain varieties of tomatoes, as the "Grandus/' Honor Bright," 

 "Multicolor," "Princess" and "Dandy Dwarf," have a characteristic 

 yellow foliage, correlated with '"white" fruits, which finally turn to 

 the ordinary color upon maturity. Three of these with yellow foliage 

 and "white" fruits are among those that have Ix^cn crossed, and it 

 mav be of interest to give some observations upon the behavior of the 

 alx)ve characteristics when bred with the ordinary sorts. 



"Honor Bright" was bred with 'Tortune," and four out of fifteen 

 plants were yellow : with "Freedom," and three of the fifteen were 

 yellow; with "Frogmore," and one of the ten was yellow. The 

 "Princess" was bred with "Potato Leaf," and four of the twenty plants 

 were yellow. "Dandy Dwarf," with "Dwarf Champion," gave three 

 yellow out of ten plants. In short, out of seventy crossed plants there 

 were fifteen with the "white" fruit and yellow foliage. 



In the five cases where the cross showed three-quarter "yellow" 

 blood, there were eleven out of the twenty-five plants with the yellow 

 foliage, and among the six sets (thirty plants) of quarter-yellow 

 blood there were only two of the yellow plants. The two sets of half- 

 bloods showed two out of the ten plants with yellow foliage. 



These figures indicate that the yellow character is possil)ly ]\[en- 

 delian, but it seems to increase as the amount of the blood of the 

 yellow plant is greater and decreases as it is diminished. 



Unit Charaotera Among Tomatoes. 



In view of the discoveries of Mendel and others along lines of 

 plant breeding, it may be stated that the work with tomatoes has led 

 to the opinion that there are a number of characteristics among them 

 that follow more or less closely the laws governing the Wiavior of 

 so-called unit characters. 



Starting with thv whole plant, is is found that the standard and 

 dwarf types are antagonistic and Mendelian, the former being the 

 dominant character. The same is true of the fine and coarse-leaved 

 (potato) types, the fine dominating over the latter. The yellow foli- 

 age, as against the ordinary green type, may Ije a recessive character, 

 as illustrated in several crosses that have been grown in the Gardens 

 the present season. 



