Buttercup Squash, was crussed with Pink. Banana, a variety used for pro- 

 cessing in the western United States. The first generation gave a 20- to 

 25-pound orange squash of good quality with thick flesh. In fact, the F^ - 

 hybrid might be worth growing as a commercial crop except for the neces- 

 sary hand pollinations needed to produce the seeds for this first gener- 

 ation cross. 



A second generation from this cross has been grown, and selection for 

 a large, oval, smooth, orange squash with clear orange flesh that rates 

 a high score in cooking tests has been continued through the fourth gen- 

 eration. It is a challenge to see how large a squash of excellent cooking 

 quality can be obtained. Some fruits meeting the critical test for a cooked 

 product and weighing 15 to 18 pounds have been saved for seed. Several 

 more self-pollinated generations must be grown and it may be found neces- 

 sary to cross the selected lines with other thick-fleshed large squashes be- 

 fore a new orange variety suitable for peeling and processing is ready for 

 commercial use. 



Doiiblerich Tomato 



In Station Bulletin 380, a detailed account is given of the breeding work 

 towards development of a commercial variety of tomato having a high 

 vitamin C content. 



First, crosses were made 

 between common tomatoes 

 and P.I. 126946, Lycopersi- 

 cuni peril vianiim. Next in 

 order, selections from the 

 hybrids having high ascorbic 

 acid content and red-colored 

 fruits were backcrossed 

 twice to large size tomatoes. 

 By continued selection for 

 those plants having large 

 fruits of a desirable type 

 and high vitamin C, it was 

 possible to establish the var- 

 iety named Doublerich. 

 Assays for ascorbic acid 

 were made repeatedly by 

 chemists'"' of the Agricult- 

 ural and Biological Chemis- 

 try Department over the period of more than a decade while the new 

 variety was being perfected. During the stage of final selections from a 

 number of similar strains. Dr. J. H. Schultz and his co-workers at the 

 North Dakota Agricultural Experiment Station participated in this project 

 and the variety finally introduced was therefore a joint introduction of 

 New Hampshire and North Dakota. Ordinary varieties of tomato commonly 

 have from 15 to 25 milligrams of ascorbic acid per 100 grams of fresh 

 fruit. Doublerich has had for three successive years by actual chemical 



Doublerich tomato, a new high-vitamin type, 

 with the tiny, high-vitamin Peruvian parent. 



* Stanley R. Shimer, Dr. Helen Purinton. and Dr. Warren Averill each in turn 

 assisted in this phase of the work. 



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