Department of Horticulture, Purdue University, Lafayette, Indiana.
Plant Physiol. 1968 Jan;43(1):9-13. doi: 10.1104/pp.43.1.9.
The application of gibberellin to Acer negundo either during or after a short photoperiod strikingly lowered the amount of hardiness obtained after 4 weeks in darkness at 5 degrees . Two growth retardants, B9 and Amo 1618, the latter of which interferes with gibberellin synthesis, brought about hardiness increases under long photoperiods. The naturally occurring inhibitor, dormin, also increased hardiness under the usual inhibiting influence of long photo-periods. Extracts from plants given long or short days had gibberellin-like compounds in largest quantities during LD and lowest quantities under SD, while the inverse was true for the inhibitor.
赤霉素在短日照期间或之后施加于三角枫,可显著降低在 5 度黑暗中 4 周后获得的抗寒性。两种生长抑制剂 B9 和 Amo 1618(后者干扰赤霉素的合成)在长日照下增加了抗寒性。天然存在的抑制剂 dormin 也在长日照的通常抑制作用下增加了抗寒性。长日或短日处理的植物提取物在 LD 时具有最多的赤霉素样化合物,而在 SD 时含量最低,而抑制剂则相反。