. The American florist : a weekly journal for the trade. Floriculture; Florists. igo7. The a mer i ca n Fl o r i s r. 721 tween the hairy leaved turnips and the ruta-baga, but none appears to have risen to commercial Importance. Celery.—This appears wholly a product of evolution by selection. The present tendencies on one hand are to breed for early maturity and quick bleaching and on the other to seek In the deep green leaved varieties good keeping quality and resistance to bacterial disease. Cucumbers and melons.—Intentional as well as natural crossing plays an Im- portant part In the develo
. The American florist : a weekly journal for the trade. Floriculture; Florists. igo7. The a mer i ca n Fl o r i s r. 721 tween the hairy leaved turnips and the ruta-baga, but none appears to have risen to commercial Importance. Celery.—This appears wholly a product of evolution by selection. The present tendencies on one hand are to breed for early maturity and quick bleaching and on the other to seek In the deep green leaved varieties good keeping quality and resistance to bacterial disease. Cucumbers and melons.—Intentional as well as natural crossing plays an Im- portant part In the development of these popular vine fruits. Most strains of forc- ing or glasshouse cucumbers are the re- sults of crossing our white splned varieties with the long smooth cucumbers so ex- tensively grown abroad. In these hybrids the white spine type of fruit prevails, but the vigor of the plant of the European kinds Is retained. Glasshouse melons ap- pear to an even greater extent to be the direct results of crossing. In most In- stances records of parentage are preserv- ed, as being of commercial importance. Among outdoor varieties hand made crosses are less in evidence, the seed grower practicing careful selection and isolation of varieties to maintain purity of type, but crossing is so readily affected by natural agencies that most distinct varieties probably originated In that man- ner to be later perpetuated by selection. Table corns.—These are cross-bred with comparative ease and certainty. Three years of selection will usually fix a de- sirable cross sufficiently for dissemination. Many successful crosses have been made for purely local uses. By far the greatest Interest in corn breeding lies In the vast efforts being made by experiment stations, societies and individuals to increase pro- ductiveness and develop special character- istics in field corn varieties. Lettuce.—This has hitherto been devel- oped by selection and wonderful varia- tions have been produced. The D
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectfloriculture, bookyea
