coleoptile


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coleoptile

a nonchlorophyllous protective covering over the growing shoot (PLUMULE) of young plant seedlings in certain MONOCOTYLEDONS (e.g. oats) that is the first structure to break through the soil into the air after germination. As growth proceeds the coleoptile is ruptured by the first foliage leaf of the enclosed shoot. Oat coleoptiles have been used extensively in experiments with AUXINS.
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monococcum) wheat populations in terms of germination rate (GR), germinating power (GP), coleoptile length (CL), shoot length (SL), root length (RL), shoot / root length ratio (SRLR), root fresh weight (RFW), root dry weight (RDW), root fresh weight / root ratio (RFDWR) under in vitro conditions using 7 PEG levels during the season of 2014-2015.
For the variables coleoptile length (CL) and radicle length (CR), the results showed no differences between treatments.
of water during the shortening of the coleoptile cells and is not
According to our results, the growth of roots and coleoptile is also affected by the duration of storage, the latter driving a decrease in growth of aerial parts and root for both varieties studied.
Later, a more advanced stage of somatic embryo development was observed (Figure 5G) with a shoot apical meristem, leaf primordia and a more developed coleoptile and scutellum aligned with the root meristems.
On onion, the UCEEs from both plants (Table 2) inihibited significantly root and coleoptile growth on the largest tested concentration, with a mean inhibition of 9% on root and 15% on coleoptile.
High-frequency plant regeneration from coleoptile tissue of indica rice (Oryza sativa L.
After about an hour, the coleoptile tip was removed and the agar block placed on one side of another decapitated oat coleoptile.
The compound is absorbed by coleoptile, mesocotyl, roots and leaves.
An in vitro system of indole-3-acetic acid formation from tryptophan in maize (Zea mays) coleoptile extracts.