. The botany of crop plants; a text and reference book. Botany, Economic. 112 BOTANY OF CROP PLANTS Beyerinck has succeeded in producing crosses of einkorn with dicoccum, none of which were fertile* however. Aaron- sohn says that T. polonicum hybridizes with the other species, T. cEstivum and T. monococcum, but the offspring are not fertile. T. monococcum (einkorn) is a small-headed species of no economic impor- tance in this country. It is cultivated to some extent in Spain, Germany,. Fig. 38.—Spikes of the types of wheat, i, Polish wheat (Triticum polo- nicum) ; 2, club wheat (T. compactum);
. The botany of crop plants; a text and reference book. Botany, Economic. 112 BOTANY OF CROP PLANTS Beyerinck has succeeded in producing crosses of einkorn with dicoccum, none of which were fertile* however. Aaron- sohn says that T. polonicum hybridizes with the other species, T. cEstivum and T. monococcum, but the offspring are not fertile. T. monococcum (einkorn) is a small-headed species of no economic impor- tance in this country. It is cultivated to some extent in Spain, Germany,. Fig. 38.—Spikes of the types of wheat, i, Polish wheat (Triticum polo- nicum) ; 2, club wheat (T. compactum); 3, common bread wheat (T. ffistivum); 4, Poulard wheat (T. turgidum); 5, durum wheat (T. durum); 6, spelt (T. spelta); 7, emmer (T. dicoccum); 8, einkorn (T. monococcum). and Switzerland. Grains in the ear have been found in the remains near the homes of Swiss lake-dwellers of the Stone Age. It is a native of Asia Minor. Triticum cBgilopoides is considered to be the wild form of our cultivated ein- korn. This wild species is divided into the two subspecies: T. thaotidar and T. boeoticum. In the first, only the lower flower is fertile, as a rule, but both bear awns, while in boeoliciim only the lower flower is fertile and awn^bearing. There is a difference of opinion as to which of these stem forms is nearest to our cultivated einkorn. T. agilopoidcs dififers from cultivated forms of einkorn in that its spikes are more fragile, and the grains smaller and lighter in Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Robbins, Wilfred William, 1884-1952. Philadelphia, P. Blakiston's Son & Co
Size: 1927px × 1296px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectbotanyeconomic
