Risultati di ricerca
DARWIN, in his “Fertilisation of Orchids,” speaks of a Madagascar orchid (Angracum sesquipedale) with nectaries 11½ inches long, and supposes that these plants must be fertilised by the efforts of huge moths, with probosces capable of such expansion, to obtain the last drops of the nectar which is secreted in the lower part of these whip-like nectaries.
Fertilisation of Orchids. Xanthopan morgani praedicta, the moth whose existence Darwin predicted. Fertilisation of Orchids is a book by Charles Darwin . The book was published on 15 May 1862 under the full title On the various contrivances by which British and foreign orchids are fertilised by insects, and on the good effects of intercrossing. [1]
DARWIN, in his "Fertilisation of Orchids," speaks of a Madagascar orchid (Angra:cum sesquipeda!e) with nectaries II} inches long, and suppo,es that these plants mu,t be fertilised by the ...
Fertilization of Orchids é um livro do naturalista inglês Charles Darwin publicado em 15 de maio de 1862 sob o título explicativo completo sobre os vários artifícios pelos quais orquídeas britânicas e estrangeiras são fertilizadas por insetos e sobre os bons efeitos do cruzamento.
How to Fertilize Your Orchid. The mantra most repeated when fertilizing orchids is weekly, weakly. Cut the fertilizer to half to one-quarter of the package instructions. For example, if the fertilizer manufacturer’s instructions say to add 1 teaspoon of fertilizer to 1 gallon of water, add only 1/2 to 1/4 teaspoon of fertilizer to 1 gallon of ...
Fertilisation of Orchids est le résumé du titre d'un livre de Charles Darwin publié en anglais en 1862 sous le nom complet de On the various contrivances by which British and foreign orchids are fertilised by insects, and on the good effects of intercrossing. Ce titre signifie « Sur les divers artifices par lesquels les insectes fécondent ...
Fertilisation of Orchids - On the Various Contrivances by Which British and Foreign Orchids Are Fertilised by Insects, and On the Good Effects of Intercrossing. O livro foi sua primeira demonstração detalhada do poder da seleção natural e explicou como as relações ecológicas complexas resultaram na coevolução de orquídeas e insetos.
