Plant-breeding; comments on the experiments of Nilsson and Burbank . way as some Gloxinias. Many other introduced de-viations and hundreds of beautiful species I saw, but thereis no reason for mentioning their names here. \ery oftena wild strain supphes some valuable equality or perhaps onlythe vigor of growth which fails in its cultivated alhes. Manya weak race was made strong by this means. Among the species and varieties introduced from foreigncountries some proved to surpass the corresponding Americanforms without needing any improvement. In this way veryvaluable contributions to American
Plant-breeding; comments on the experiments of Nilsson and Burbank . way as some Gloxinias. Many other introduced de-viations and hundreds of beautiful species I saw, but thereis no reason for mentioning their names here. \ery oftena wild strain supphes some valuable equality or perhaps onlythe vigor of growth which fails in its cultivated alhes. Manya weak race was made strong by this means. Among the species and varieties introduced from foreigncountries some proved to surpass the corresponding Americanforms without needing any improvement. In this way veryvaluable contributions to American fruit culture have beensecured. In the beginning of his work, a Japanese agentone day sent him some plum pits. From these he grew twovarieties, which he has since introduced under the names ofBurbank and Satsuma plums. The first of them was namedfor him by the United States pomologist at was exceptionally suitable to American conditions andhas justified its selection by its present wide distributionand economic value. The Satsuma plum is now commonly. 171 17 2 PLANT-BREEDING cultivated in California and is a most delicious preserve onaccount of its sweet flesh and small pits. The Burbankplum, on the other hand, is one of the best and most popularJapanese plums throughout all the United States, it is earlyand heavy bearing, free from insects and diseases, and amarket fruit of large size and attractive color. Other species needed only sowing on a large scale and aselection of the best individuals, and could then be intro-duced without artificial improvement. The common Frenchprune, of which California has produced one hundred andfifty millions pounds of dried produce in a year, is a smallfruit and late in ripening, although it is rich in sugar. Inorder to enlarge the size and to change the time of ripening,Burbank sowed large numbers of seeds of this French prunedAgen, grafted the seedlings on older trees in order to forcethem to yield their fruits soon, and finally
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