Cane sugar; a textbook on the agriculture of the sugar cane, the manufacture of cane sugar, and the analysis of sugar-house products . et and the glumes ; at 9 are thebristles that surround the base ofthe flower. It is only exceptionallythat the cane forms fertile seed. Somevarieties never flower, and others doso only in the tropics. The age atwhich the cane flowers varies fromeight to fifteen months, and is de-pendent on variety and climate andalso on the time of planting. Flower-ing takes place at certain definite which also arise by a con-tinual process of cell sub-division all the othertis
Cane sugar; a textbook on the agriculture of the sugar cane, the manufacture of cane sugar, and the analysis of sugar-house products . et and the glumes ; at 9 are thebristles that surround the base ofthe flower. It is only exceptionallythat the cane forms fertile seed. Somevarieties never flower, and others doso only in the tropics. The age atwhich the cane flowers varies fromeight to fifteen months, and is de-pendent on variety and climate andalso on the time of planting. Flower-ing takes place at certain definite which also arise by a con-tinual process of cell sub-division all the othertissues of the root. Function of the Root.—The functions of the rootare two-fold; the roothairs closely envelop par-ticles of soil, therebymaintaining the hold ofthe plant on the soil,and, secondly, the roothairs absorb water andplant food from the soiland transmit it to theother parts of the grow-ing plant. The Flower.—The in-florescence of the cane isa panicle of soft silkyspikelets, borne on theend of an elongated ped-uncle, called the arrow, arising from theterminal vegetative point of the Fig. 12 is given a drawing. Fig. r2 THE CANE ir times of the 5^ear, varying in the different cane-growing regions, and if the caneis not sufficiently mature at the flowering time in its first year, no formationof flowers occurs until the second year. In this way a delay of a few weeksin planting will retard flowering fortwelve months. The pollen grains magnified 360times are shown in Fig. 13, after Will-brink and Ledeboer^; a is a ripe pollengrain, shown also germinating b ; cand d are joung unripe pollen grains ;k is the germ pore; the exine is shownat e and the intine at i. The pollengrains are small yellow, nearly spheri-cal bodies ; the outer wall, the exine,is of cork tissue and has an opening,k, the germ pore. The inner wall, theintine, is of pure cellulose and has noopening. When ripe the interior of the pollen grains are filled with starchand are opaque, but when unri
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsugar, bookyear1921
