Propagation and chlorophyll fluorescence of Camptotheca acuminata cuttings

Dynamic Chiropractic

Donna M. Richardson¹  Stephen J. Trueman² 

[1] Agri-Science Queensland, MS 483, Fraser Road, Gympie 4570, Australia;School of Science and Education, and Agri-Science Queensland, University of the Sunshine Coast, Maroochydore DC, Qld 4558, Australia.

关键词: Adventitious roots;    auxin;    Camptotheca acuminata;    camptothecin;    photoinhibition;    propagation.;   

DOI  :  

学科分类：医学（综合）

来源: MPA Media

【 摘 要 】

The Chinese happy tree,Camptotheca acuminataDecne, is grown extensively in plantations for harvest and extraction of its anti-cancer and potentially anti-viral compound, camptothecin. This study determined whetherC. acuminatawas amenable to clonal propagation as rooted cuttings and whether application of the rooting hormone, indole-3-butyric acid (IBA), affected chlorophyll fluorescence (FV/FM)or the percentage of cuttings that formed roots. The species was found highly amenable to vegetative propagation because a consistently high percentage of cuttings formed roots when treated with 3 or 8 g IBA / kg powder. IBA application was unnecessary in spring when more than 90% of untreated cuttings formed roots, but the highest IBA dose increased the number of plants produced by 18 and 82% (from tip cuttings) and by 46 and 102% (from node cuttings) in two later collections when rooting of untreated cuttings had declined. IBA treatments did not affect chlorophyll fluorescence. Industrial deployment ofC. acuminatais entirely feasible using rooted cuttings, allowing clonal multiplication of genotypes that contain high levels of camptothecin.

【 授权许可】

Unknown