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当前位置: 首页 > 文章 > Mini-cutting technique for Khaya anthotheca: selection of suitable IBA concentration and nutrient solution for its vegetative propagation 林业研究(英文版) 2018,29 (1)
Position: Home > Articles > Mini-cutting technique for Khaya anthotheca: selection of suitable IBA concentration and nutrient solution for its vegetative propagation Journal of Forestry Research 2018,29 (1)

Mini-cutting technique for Khaya anthotheca: selection of suitable IBA concentration and nutrient solution for its vegetative propagation

作  者：
Joamir Barbosa Filho;Maria Angélica Di Carvalho;Leandro Silva de Oliveira;Enéas Ricardo Konzen;Gilvano Ebling Brondan
单  位：
College of Forestry, Federal University of Mato Grosso (UFMT), Cuiabá, Brazi;Department of Forest Sciences, Federal University of Lavras (UFLA), Lavras, Brazil;Institute of Agronomic Sciences, Federal University of Minas Gerais (UFMG), Montes Claros, Brazil;College of Forestry, Federal University of Mato Grosso (UFMT), Cuiabá, Brazil
关键词：
African mahogany;Seminal mini-garden;Adventitious rooting;Juvenile tissue;Mini-stump;SWIETENIA-MACROPHYLLA KING;STOCK PLANTS;AUXIN;MATURATION;MINICUTTINGS;TIM
摘  要：
Khaya anthotheca is a hardwood species from Africa and recently introduced to Brazil. This species yields high-quality wood for diverse applications, but little has been done toward an effective propagation method for large-scale production in nurseries. We evaluated the effects of different concentrations of macro and micronutrients (i.e., 100, 50 and 25% of the concentration of a referenced solution) combined with indole-3-butyric acid (IBA) at 0 and 2 g L-1 on the survival rate of mini-stumps and the survival and adventitious rooting of K. anthotheca mini-cuttings. The mini-stumps were grown from a source of seeds imported from Ghana, West Africa. The mini-stumps survived at a high rate (97%). Consistently high shoot yields were obtained from the mini-stumps (average of 1.8 per mini-stump). High survival percentage of mini-cuttings and adventitious rooting were observed when solutions with 100 and 50% of the nutrients concentration were combined with 2 g L-1 IBA. Histological sections analyzed through optical microscopy indicated the tissues from mini-cutting stems were juvenile, which might have stimulated adventitious rooting. These results have important implications for further work aimed at establishing propagation strategies for K. anthotheca, which are of prime importance for assisting breeding programs of this species.

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