Somatic embryogenesis of Bambusa oldhamii, Bambusa beecheyana and Sinocalamus latiflora

Author(s):  
Wei-Chin Chang
1995 ◽  
Vol 94 (4) ◽  
pp. 605-612 ◽  
Author(s):  
Marc Kreuger ◽  
Erik Postma ◽  
Yvon Brouwer ◽  
Gerrit-Jan van Holst

Author(s):  
B. Ramírez-Valverde
Keyword(s):  

La utilización del bambú es muy antigua, pero poco conocida en México. En Puebla, los productores están incorporando bambúes a sus predios como parte de la diversificación. El objetivo del estudio es conocer los sistemas de producción de Guadua angustifolia Kunth, y Bambusa oldhamii Munro y describir su aprovechamiento por los pobladores en tres comunidades de la Sierra Nor-Oriental de Puebla, México. Se aplicaron encuestas a pequeños productores y a productores comerciales de bambú de la zona. Se encontraron dos grandes sistemas de bambú, el sistema de plantaciones comerciales, mayor a media hectárea exclusiva para bambú, mantenimiento de la plantación y producción destinada al mercado en distintas formas. El sistema familiar está presente en la mayoría de los productores, el bambú se encuentra en los pequeños predios de cultivo, principalmente maíz y frijol, no existe manejo agronómico y los usos son exclusivos para las necesidades del hogar. Las condiciones climáticas presentes en la Sierra Nor Oriental, benefician el desarrollo del cultivo de bambú, sin embargo, el principal problema del cultivo en ambos sistemas, es la falta de mercado, el poco comercio se da de forma incipiente y descuidada, por tal motivo han buscado diversificar sus fincas sin éxito, ya que no existe una cadena productiva de bambú en la zona.


1970 ◽  
Vol 19 (1) ◽  
pp. 89-99
Author(s):  
K. Choudhary ◽  
M. Singh ◽  
M. S. Rathore ◽  
N. S. Shekhawat

This long term study demonstrates for the first time that it is possible to propagate embryogenic Vigna trilobata and to subsequently initiate the differentiation of embryos into complete plantlets. Initiation of callus was possible on 2,4-D. Somatic embryos differentiated on modified MS basal nutrient medium with 1.0 mg/l  of 2,4-D and 0.5 mg/l  of Kn. Sustained cell division resulted in globular and heart shape stages of somatic embryos. Transfer of embryos on to a fresh modified MS basal medium with 0.5 mg/l of Kn and 0.5 mg/l of GA3 helped them to attain maturation and germination. However, the propagation of cells, as well as the differentiation of embryos, were inhibited by a continuous application of these growth regulators. For this reason, a long period on medium lacking these growth regulators was necessary before the differentiation of embryos occurred again. The consequences for improving the propagation of embryogenic cultures in Vigna species are discussed. Key words: Pasture  legume, Vigna trilobata, Globular, Heart shape, somatic embryogenesis D.O.I. 10.3329/ptcb.v19i1.4990 Plant Tissue Cult. & Biotech. 19(1): 89-99, 2009 (June)


HortScience ◽  
1990 ◽  
Vol 25 (5) ◽  
pp. 573-576 ◽  
Author(s):  
I.E. Yates ◽  
C.C. Reilly

The influence of stage of fruit development and plant growth regulators on somatic embryogenesis and the relation of cultivar response on somatic embryogenesis and subsequent plant development have been investigated in eight cultivars of pecan [Carya illinoensis (Wangenh.) C. Koch]. Explants from the micropylar region of the ovule were more embryogenic when removed from fruits in the liquid endosperm stage than were intact ovules from less-mature fruits or from cotyledonary segments of more-mature fruits. Explants conditioned on medium containing auxin alone or auxin + cytokinin produced more somatic embryos than medium containing cytokinin alone. Under the conditions of this study, frequency of embryogenesis, as well as the germination of somatic embryos leading to plant development, indicated appreciable variation among cultivars. Plant development was greatest by far from somatic embryos of `Schley' than other cultivars studied.


Sign in / Sign up

Export Citation Format

Share Document