. La propagazione delle piante ; dando i principi che regolano lo sviluppo e la crescita delle piante, la loro affinità botanica e peculiari proprietà; inoltre, le descrizioni del processo mediante il quale le varietà e le specie sono incrociati o ibridate, e i diversi metodi con i quali le piante coltivate possono essere propagate e moltiplicato . Propagazione nel vegetale. Per PROPAaATION di piante. essere supposto che tutti sono veramente piccole o, scientifico- alleato parlando, vere bacche, ma di comune accordo la piante rampicanti, come la fragola, mirtillo rosso, nero- berry, o montante crescente boccole, come la R

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. The propagation of plants ; giving the principles which govern the development and growth of plants, their botanical affinities and peculiar properties; also, descriptions of the process by which varieties and species are crossed or hybridized, and the many different methods by which cultivated plants may be propagated and multiplied . Plant propagation. TO PROPAaATION OF PLANTS. be supposed that they are all really small, or, scientific- ally speaking, true berries, but by common consent the trailing plants, like the Strawberry, Cranberry, Black- berry, or upright growing bushes, like the Raspberry, Gooseberry and Currant, have received the name of smalJ fruits or berries. There is such an immense number of fruits, and thej are so variable in structure that I can only refer to a few, merely to show, in a very general way, their manner oi growth. There are simple and compound fruits and various sub-divisions of each class. The common Plum (figure 38), Peach and Cherry are familiar examples of what are termed simple fruits, ol the ripening of a one-celled pistil, the seed or kernel being surround- by a hard, l>ony shell, and this losed in a fleshy, edible pulp, the Cornel {Corntix Mas), and imon Dog-wood, the seed is iposed of two bony cells, one ___3n abortive, but all suirounded by the fleshy, edible pulp. The olive is also a drupe or stone fruit, â ââ but with a one-celled seed vessel- Fig. 28.âCOMMON PLTJM. mi -n i t -r.-. â â , The Raspberry and Blackberry are really an aggregation of small stone fruits, their hard, bony seed being surrounded with an edible pulp, each seed being a ripened pistil, but all arranged on a conical or elongated receptacle. But in these fruits the entire cluster is the product of one flower. In the Mulberry, however, which so closely resembles the Blackberry in form and general appearance, the fruit is really a Sorosis or congeries of fruits, the product of numerous female o* pistillate flowers united ; the calyx of each bec

Parole chiave associate all'immagine

• bookcentury1900
• bookdecade1910
• booksubjectplantpropagation
• bubo