Seed tubers

The sprout inhibition was reversible, thus it can be used for seed tuber storage (Vokou et al., 1993). 

Celis-Gamboa, C., Struik, P. C., Jaeobsen, E., Visser, R. G. F. (2005). Sprouting of seed tubers during cold storage and its influenee on tuber formation, flowering and the duration of the life eyele in a diploid population of potato. Potato Research, 46(1-2), 9-25. 

Humans in all the ancient cultures selected appropriate plants to produce the carbohydrates, fats or oils and proteins needed for their sustenance. Most of the chosen crops produced stmctures (e.g., seeds, tubers, etc.) that the plant had evolved for propagation... 

Analysis of starches (especially those of wheat, maize, rice and potatoes) is made principally to determine their purity, that is, to ascertain if they have been more or less completely freed from the other substances which accompany the starch in the seeds, tubers or roots, such as nitrogenous substances, woody matter, mineral salts, etc. 

Seed stock The seed, tubers, and roots saved by a farmer after each harvest to be used for the next crop production. Seed supply. 

Jerusalem artichoke stems can grow to 3 m or more in height, though most clones are shorter. Dwarf clones have been selected (Zubr and Pedersen, 1993). The stems are stout and heavily trichomed when young. Initially the stems are quite succulent but become woody over time. Branches vary in number and position on the main stems. The stems arise directly from the seed tuber, with branches forming at nodes on the stem. Basal branches may form underground and at the soil surface appear to be stems hence, estimates of stem number per plant are variable. 

Pas ko (1973) categorized clones into three classes based upon the number of stems arising from the seed tuber (1) >3 (strong), (2) 2 to 3 stems (intermediate), and (3) a single stem (weak). Multiple stems facilitate a rapid increase in leaf area index early in the development of the plant. The number of stems also varies with agronomic practices and seed tuber size. Some clones are highly variable in the number of stems produced, while others are less so. 

The underground portion of the stem represents the site for rhizome development and, in many instances, the formation of lateral branches. The length of this portion of the stem depends on the planting depth of the seed tubers shallow planting is undesirable. Swanton (1986) found that the dry weight of the underground stem was substantially higher in cultivated clones (35.3 g) than in wild clones (16.2 g). 

Stem number is partly determined by the size of the seed tuber (Barloy, 1988 Louis, 1985) and is closely related to the early canopy development and leaf area index (Baillarge, 1942 Cors and Falisse, 1980). Branching type is genetically controlled, although the number of branches is largely regulated by plant density. 

The main ascending axes of the plant that emerge from the belowground seed tuber. The number emerging from the ground and not directly from the seed tuber. 

Other belowground vegetative structures (i.e., roots and seed tuber) have only a relatively small proportion of the total carbon, though the root contribution is typically underestimated due to incomplete recovery during excavation. Thus, aboveground plant parts, in particular stems/branches,... 

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