Plant-breeding; comments on the experiments of Nilsson and Burbank . Fig. 20. Svalof Pearl summer wheat, not layering, early ripening, withfull rounded kernels, that keep in the cars at harvest time. 74. Fig. 21. Ordinary Butt summer wheat, for comparison with the improvedvariety of the previous figure. 75 76 PLANT-BREEDING its ultimate distribution. Experience, however, soon showedthis fear to be unfounded, since the elimination of all furtherselection soon overcomes the incipient deficiency. In reality,

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