Plant-breeding; comments on the experiments of Nilsson and Burbank . Fig. 44. Twisted stems. A. Of a horsetail (Equisetum Telmateja). the wild teasel {Dipsacus sylvestris). Ribbondike stems or fasciations are another hereditary-monstrosity. In such a race of the hawksbeard I isolated thenormal plants from the flattened stems and gathered the seedseparately. The first gave 20 per cent, the latter 20 to 40 per. Fig. 45. Sterile corn, a special form of barren stalks without tassel andwithout ear. Originated in the botanical garden at Amsterdam, 1S88. 145 146 PLANT-BREEDING cent of fasciated
Plant-breeding; comments on the experiments of Nilsson and Burbank . Fig. 44. Twisted stems. A. Of a horsetail (Equisetum Telmateja). the wild teasel {Dipsacus sylvestris). Ribbondike stems or fasciations are another hereditary-monstrosity. In such a race of the hawksbeard I isolated thenormal plants from the flattened stems and gathered the seedseparately. The first gave 20 per cent, the latter 20 to 40 per. Fig. 45. Sterile corn, a special form of barren stalks without tassel andwithout ear. Originated in the botanical garden at Amsterdam, 1S88. 145 146 PLANT-BREEDING cent of fasciated stems. Three seed-leaves on a germinatingplant of some dicotyledonous species are inherited in thesame way and so are connate seed leaves. Of the latter Itried the Russian sunflower, of the former some evening prim-roses, and quite a number of other species. As a rule, theseeds of normal plants which in their youth had two free seedleaves gave, after pure fertihzation, the same per cent of mon-strous seedhngs as the pure seed of the best selected deviatingspecimens. Hence we may conclude that in races which con-tain some kind of deviation, this is as Ukcly to be reproducedfrom the seeds of the normal plants as from those of themonstrous specimens. Applying tliis rule to barrenness incorn, we may assume that the fertile stalks of rows which arerich in unfertile plants are as liable to deteriorate the neigh-
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