lobatus fastened to glass slides in small running-water aquaria allowed us to make a general description of stolon
formation in this species.
Numbers of node production, sprouting, and stolon
production were counted and stolon
length were measured.
Different plant parts of potato crop form the infected field; (A) Infected and healthy plant with the stem canker, (B) Tuber showing the typical symptoms of Black Scurf with the whitish growth of fungus, (C) Stolon
canker and (D) Canker on stem
Disease assessments included measures of stolon
pruning and stem canker  made on three sequential assessment dates, 40, 55, and 70 days after transplanting.
Growth rate: Mean stolon
growth rate was 11.7 [+ or -] 6.2 cm [month.sup.-1], minimum in December 2004 (1.4 cm [month.sup.-1]) and maximum in September 2004 (33.2 cm [month.sup.-1] Fig.
Vegetative material, 0.25 m length stolons
with eight nodes, was used for planting.
Sprigging and plugging are vegetative propagation techniques that take advantage of turf species that reproduce by stolons
, such as bermudagrass, or grow vigorously from tillers, such as zoysiagrass.
For each analysis, 1 g of stolon
tissue was ground with a mortar and pestle in liquid [N.sub.2].
In itself this is not a new topic: Miki (1937) speculated on the equivalence of the pla nt body in Najas to the stolon
in Hydrocharis, and this type of consideration appeared again later, in Wilder (1975).
An alien Caulerpa in the Mediterranean can have a stolon
more than 9 feet long, with up to 200 fronds.
In our study species, Potentilla anserina, the plant consists of a series of internode-node stolon
modules and each of the ramets may produce only one terminal flower in the year it is formed (Eriksson 1985, 1988).
We excavated 6-12 plants per plot, counted leaves and stolons
, classified each leaf as clipped, grazed, or whole, and measured plant height, length of each leaf, bulb height and width, "stem height" (the length of the nonphotosynthetic part of the leaves, a measure of depth of the bulb in the soil), stolon
length, and (on flowering plants) inflorescence height and number of flowers or fruits.