Читать книгу Fig Culture - Earle Franklin Sumner - Страница 6

This process must be practiced wherever the Smyrna figs are grown, for without it they will not mature either seeds or figs. The flowers of the Smyrna figs are all pistillate and require pollination, which in the case of these varieties can be effected on a large scale only through caprification. The process consists in the suspension of wild caprifigs, which possess staminate and gall flowers, in the Smyrna fig trees, when the pistils in the blossoms of the latter are in a receptive condition. A minute wasp, the Blastophaga, breeds in the caprifig in large numbers, and on leaving it crawls into the Smyrna fig, covered with the pollen of the caprifig. This pollen, transferred by contact from the body of the wasp to the receptive stigmas of the flowers in the Smyrna figs, effects the fertilization of the ovules of those flowers and causes them to form seeds and mature the fruit of which they are a part. These seeds impart a nutty aroma and flavor to the fig when dried, and give it a marked superiority to our common figs. Caprification is not yet practiced in the United States, the wasp not existing here, though both it and some of the Smyrna figs have been brought to this country several times. The first importation of Smyrna fig trees was made by Gulian P. Rixford, about 1880, when three varieties of Smyrna figs and a single caprifig tree were introduced.