|Title||Growth and tropic responses of excised Avena coleoptiles in culture|
|Publication Type||Journal Article|
|Year of Publication||1938|
|Authors||Jr. GSAvery, La Rue CD|
1. Determinations were made of the hormone concentration in the tips of normal coleoptiles from seedlings of different ages; the tips of very young coleoptiles contain relatively low concentrations and the most rapid increase in concentration occurs while coleoptiles elongate from 2 to 6 mm. After the coleoptile is 1 cm. long, hormone content in the tip remains at a relatively constant level on to the end of the growth period.