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Resulta imposible mejorar nada bas\u00e1ndose s\u00f3lo en la selecci\u00f3n. La selecci\u00f3n no es garant\u00eda de mejora. As\u00ed donde dice:<\/p>\n
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but that the native plants have not been improved by continued selection up to a standard of perfection<\/em><\/p>\n <\/p>\n Deber\u00eda decir:<\/p>\n <\/p>\n but that the native plants have not been improved by continued breeding up to a standard of perfection<\/em><\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n A large amount of change, thus slowly and unconsciously accumulated, explains, as I believe, the well-known fact, that in a number of cases we cannot recognise, and therefore do not know, the wild parent-stocks of the plants which have been longest cultivated in our flower and kitchen gardens. If it has taken centuries or thousands of years to improve or modify most of our plants up to their present standard of usefulness to man, we can understand how it is that neither Australia, the Cape of Good Hope, nor any other region inhabited by quite uncivilised man, has afforded us a single plant worth culture. It is not that these countries, so rich in species, do not by a strange chance possess the aboriginal stocks of any useful plants, but that the native plants have not been improved by continued selection up to a standard of perfection comparable with that acquired by the plants in countries anciently civilised.<\/em><\/p>\n <\/p>\n Muchas modificaciones acumuladas as\u00ed, lenta e inconscientemente, explican, a mi parecer, el hecho bien conocido de que en cierto n\u00famero de casos no podamos reconocer -y, por consiguiente, no conozcamos- el tronco primitivo silvestre de las plantas cultivadas desde m\u00e1s antiguo en nuestros jardines y huertas. Si el mejorar o modificar la mayor parte de nuestras plantas hasta su tipo actual de utilidad, para el hombre ha exigido cientos y miles de a\u00f1os, podemos comprender c\u00f3mo es que, ni Australia, ni el Cabo de Buena Esperanza, ni ninguna otra regi\u00f3n poblada por hombres por completo sin civilizar nos haya aportado ni una sola planta digna de cultivo. No es que estos pa\u00edses, tan ricos en especies, no posean, por una extra\u00f1a casualidad, los troncos primitivos de muchas plantas \u00fatiles, sino que las plantas ind\u00edgenas no han sido mejoradas mediante selecci\u00f3n continuada hasta llegar a un tipo de perfecci\u00f3n comparable con el adquirido por las plantas en pa\u00edses de antiguo civilizados.<\/em><\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" Resulta imposible mejorar nada bas\u00e1ndose s\u00f3lo en la selecci\u00f3n. La selecci\u00f3n no es garant\u00eda de mejora. As\u00ed donde dice: but that the native plants have not been improved by continued selection up to a standard of perfection Deber\u00eda decir: but that the native plants have not been improved by continued breeding up to a standard of perfection A large amount of change, thus slowly and unconsciously accumulated, explains, as I believe, the well-known fact, that in a number of cases we cannot recognise, and therefore do not know, the wild parent-stocks of\u2026<\/p>\n","protected":false},"author":86,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[467,6726],"tags":[22767],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":4}},"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t