BIOL 2242 Lecture Notes - Lecture 19: Axillary Bud, Monopodial, Sympodial
5 Feb 2018
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Sympodial: sam produces determinate number of leaf + bud primordial, & then dies. Nearby bud primordium assumes terminal position: generates a highly branched shoot with less dominance of main trunk. May resemble monopodial form if nearby bud angles up e. g. , basswood. In annuals and herb perennials, sam often convert to flowering stem axis before dying. Monopodial: sam produces indeterminate number of leaf + bud primordial. Nearby primordium takes over role only if sam damaged: generated a less branched shoot, with more dominance of main trunk. 25. 6, p. 583: terminal and axillary buds of aesculus. Each bud has its own sam + leaf, bud primordial: bud emergence. Scaled dropped; growing tips to start to elongate: nodes separated after intermodal elongation. Primary meristems in the stem: same 3 as in root, but their origin is more complex. Ground meristem gives rise to the cortex and pith (text uses pith meristem, not to worry)
