Dormancy break in seeds of "quina" (Strychnos pseudoquina A. St.-Hil.)

Revista Brasileira de Plantas Medicinais

J.m. Vasconcelos²  M.a. Rodrigues²  S.c. Vasconcelos Filho¹  J.f. Sales¹  F.g. Silva¹  J.g. Santana¹ 

[1] ,Universidade Federal de Viçosa Departamento de Biologia Vegetal Viçosa,Brasil

关键词: quina;    medicinal plant;    germination;    Loganiaceae;    seed dormancy;    quina;    planta medicinal;    germinação;    Loganiaceae;    dormência de sementes;   

DOI  :  10.1590/S1516-05722011000400017

来源: SciELO

【 摘 要 】

"Quina" (Strychnos pseudoquina A. St. Hil) is a medicinal plant species from the Brazilian Cerrado. As its seeds show dormancy, they were subjected to the treatments pre-cooling at 5ºC during 7 days, pre-heating at 40ºC during 7 days, pre-soaking in sulfuric acid PA during 5 and 15 min, pre-soaking in boiling water during 5 and 15 min, pre-soaking in 100 and 200 ppm gibberellic acid during 48 h, pre-soaking in distilled water during 24 and 48 h, and mechanical scarification to break dormancy. Counts were daily conducted from the 2nd day after the experiment implementation until the germination stabilization at the 65th day. The germination speed index (GSI) and the germination percentage were evaluated. Germination rates above 96% were reached in seeds pre-soaked in water during 48 h and substrate moistened with water or KNO3.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License