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Ciencia e investigación agraria

versión On-line ISSN 0718-1620

Resumen

PELICANO, Alicia et al. Efecto de la propagación asexual y prolongación del período vegetativo de Morus alba en la producción de capullos de seda. Cienc. Inv. Agr. [online]. 2007, vol.34, n.2, pp. 81-89. ISSN 0718-1620.  http://dx.doi.org/10.4067/S0718-16202007000200001.

The goal of this work was to establish an efficient protocol for vegetative propagation of Morus alba. At the same time this study aimed to evaluate the influence of this propagation protocol on the feeding of the larvae of Bombyx mori and crude silk production. Vegetatively propagated mulberry plants were transplanted to 4 L containers and treated with 15 g of fertilizer, N:P:K (15:15:15,), and/or 643enzyladenine (5 mg-L-1) (Ck). In autumn and spring, leaves were used for the feeding of one cohort of third stage larvae. It was observed that 60% of the plants treated with Ck sprouted before the others, in July, and the rest in August. Although the fertilized plants (TF) and those fertilized and treated with 6-benzyladenine (TFCk) sprouted shortly before the control (T), the Ck treated plants were notably uniform and had more and larger leaves. In the TFCk treatment, the percentage of fiber, insoluble in neutral detergent (FIND) free from ash, was minor (29.73%). The quality of the food was reflected in the weight gain and in crude silk percentage. Although interaction between TF and Ck was not significant, there were significant differences between control plants (T) and those treated with TF, TCk and TFCk. In the autumn test, the TCk treatment negatively affected the larvae of B. mori. These larvae twisted, assiduously inducing intestine evacuation. This caused reduced food consumption, and it was a transitory effect, but that meant a lower final weight. The results of this work are very promising and useful for massive production since a longer vegetative cycle for M. alba would allow a greater number of B. mori generations per year

Palabras llave : Bombyx mori; cytokinins; Morus alba; mulberry.

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