ORH 1030 Lecture Notes - Lecture 4: Coleus, Plectranthus, Carl Linnaeus
27 Nov 2017
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Coleus botanical classification: first by carl linnaeus in 1763 as ocimum scutellarioides. Family lamiaceae (mint family) genus: plectranthus, over 150 species of these. Brought by the dutch to western europe in 1830s. Back in the day: van gogh painted a coleus in 1886. William bull (england) first tried to breed it in 1880s (around the industrial rev. ). Mostly open-pollinated seeds, and let bees be your polinater. Selections and establishment of clonally propagated cultivars for the industry. They get paid 3. 5 cents for each root of the plant. B(cid:396)ighte(cid:396) (cid:272)ollo(cid:396)s (cid:449)ith less fadi(cid:374)g, supe(cid:396)io(cid:396) (cid:271)(cid:396)a(cid:374)(cid:272)hi(cid:374)g a(cid:374)d ha(cid:271)it, late flo(cid:449)e(cid:396)i(cid:374)g (cid:272)ulti(cid:448)a(cid:396)s (cid:894)(cid:373)ost i(cid:373)po(cid:396)ta(cid:374)t t(cid:396)ait, sa(cid:455)s d(cid:396) cla(cid:396)ke(cid:895), a(cid:374)d t(cid:396)ai(cid:374) to(cid:373)o(cid:396)(cid:396)o(cid:449)"s plant breeders. Recurring mmass selection: collect seeds and do trial seed planting fall grow out 60-70,000 seedlings january 1st round of selection at six weeks for bright color, select down to 2000 plants. Slide 8-9 ho(cid:449)i(cid:374)g ho(cid:449) he sele(cid:272)ts pla(cid:374)ts a(cid:374)d kills the(cid:373) too. He does(cid:374)"t (cid:449)a(cid:374)t othe(cid:396)s to have his genetics!
