Kanta J, Sichová E, Pejsková I, Bartos F
Acta Biol Acad Sci Hung. 1977;28(2):191-4.
The roots of Allium cepa were allowed to grow in distilled water containing 10(-4) M adrenaline hydrochloride or 2 X 10(-3) M hydrocortisone sodium succinate. Adrenaline inhibited the growth of roots; they decreased in length, number and total dry weight. The total amount of DNA in the roots was reduced much less than that of extracellular root components after adrenaline. Also hydrocortisone treatment resulted in a considerable decrease of the length and dry weight of Allium cepa roots. Both DNA and extracellular root components were influenced.
将洋葱的根置于含有10⁻⁴M盐酸肾上腺素或2×10⁻³M氢化可的松琥珀酸钠的蒸馏水中培养。肾上腺素抑制根的生长；根的长度、数量和总干重均减少。与肾上腺素处理后根的细胞外成分相比，根中DNA总量的减少要少得多。氢化可的松处理也导致洋葱根的长度和干重显著降低。DNA和根的细胞外成分均受到影响。
