Luther Burbank, his methods and discoveries and their practical application; prepared from his original field notes covering more than 100,000 experiments made during forty years devoted to plant improvement . ntents and purposes a hybrid progeny. The new purple-leaved seedling was graftedupon an old tree, and in due course I producedseveral thousand second and third generationoffspring from the original seedling. The fruit isof a characteristic red color, and in flavor itclosely resembles the fruit that the original purple-leaved cion subsequently bore. In size the fruitis intermediate betwee
Luther Burbank, his methods and discoveries and their practical application; prepared from his original field notes covering more than 100,000 experiments made during forty years devoted to plant improvement . ntents and purposes a hybrid progeny. The new purple-leaved seedling was graftedupon an old tree, and in due course I producedseveral thousand second and third generationoffspring from the original seedling. The fruit isof a characteristic red color, and in flavor itclosely resembles the fruit that the original purple-leaved cion subsequently bore. In size the fruitis intermediate between that of the purple-leavedcion and that of the Kelsey. The descendants of this hybrid stock vary inthe second and succeeding generations, just as theymight be expected to do had they grown froma hybrid seed produced by pollenation; thusaffording additional evidence that we have to dowith an actual case of sap-hybridism. Grafting to Save Space and Time I record this case thus at length because of itsextreme unusualness. Never in the entire course of my wideexperience have I seen another case in which Icould trace such definite influence between thegrafted cion and its foster parent. And so we may [160]. O 3 J5c^ O to > o S ~. a K O 2 i^ S oa, 2 n S. ~* re ff 3 re ;oa 0»re I O ^ S re 3^=^ fi. Q5 re , ? ^ o ;5 s- re 3 o^- - Ci- : S oo LUTHER BURBANK take it as a safe general rule that a cion, howevergrafted, will retain the characteristics of its parentstock, and that the tree on which it grows willbe fundamentally uninfluenced, so far as thecharacter of its fruit is concerned, by the intruder. It is not at all with the expectation ofinfluencing the fruit product of either cion orstock that the familiar process of grafting isresorted to. The chief object of grafting, aspracticed in my orchard, is to economize spaceand save time. As to the former point, it willbe obvious that where scores or hundreds oftwigs from different seedlings are grafted onlimbs of a single tree,
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