Study on tissue culture system of Polygonatum cyrtonema / 中国中药杂志
China Journal of Chinese Materia Medica
;
(24): 2032-2037, 2019.
Artículo
en Chino
| WPRIM
| ID: wpr-773132
ABSTRACT
In order to accelerate the breeding of the excellent seedlings of Polygonatum cyrtonema,tissue culture system of P. cyrtonema was established through the comprehensive regulation of key factors( leaf age,leaf location,basic media and plant growth regulators) and cytological basis of callus formation and differentiation was analyzed through paraffin section. The results showed that the 30-day-old leaf base explanton medium MS+6-BA 1. 50 mg·L~(-1)+2,4-D 0. 20 mg·L~(-1) had the highest induction rate( 80. 00%). The callus was initiated from cells on leaf base epidermis and near cortex,formed by the differentiation of middle vascular bundle cells. The optimal medium for adventitious bud differentiation was MS+ 6-BA 4. 00 mg·L~(-1)+ 2,4-D 0. 20 mg·L~(-1) with the differentiation rate of90. 33%,and the average number of buds was 5. 16. The adventitious buds had two origin types exogenous and endogenous origin,formed by callus proximal cells and callus internal meristemoid. The adventitious bud proliferation medium was screened by orthogonal design,which determined the optimum combination was MS+ 6-BA 2. 00 mg·L~(-1)+NAA 0. 10 mg·L~(-1) and MS+ 6-BA 2. 00 mg·L~(-1)+NAA 0. 20 mg·L~(-1). The tubers with three leaves were cut and inoculated in the medium 1/2 MS+IBA 2. 00 mg·L~(-1),showing the highest rooting rate of 94. 00%. The rooting seedlings transplanted into the peat-vermiculite( 1 ∶ 1) matrix grew healthy and the survival rate was over 85. 00%. This research provided a novel solution for large-scale cultivation of P. cyrtonema seedling.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Reguladores del Crecimiento de las Plantas
/
Regeneración
/
Hojas de la Planta
/
Medios de Cultivo
/
Biología Celular
/
Polygonatum
/
Plantones
/
Técnicas de Cultivo de Tejidos
Idioma:
Chino
Revista:
China Journal of Chinese Materia Medica
Año:
2019
Tipo del documento:
Artículo
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