Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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    We will mail you new results for this query: keywords==cultivated invitro
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Rooting of microcuttings: Theory and practice
Klerk, G.J.M. de - \ 2002
In Vitro Cellular and Developmental Biology. Plant 38 (2002)5. - ISSN 1054-5476 - p. 415 - 422.
micropropagated plants - pericyclic topipotency - apple microcuttings - rorippa-sylvestris - cultivated invitro - aerial organs - stem slices - fragments - acid
Poor adventitious root formation is a major obstacle in micropropagation and in conventional propagation. This paper reviews recent progress in the understanding of adventitious root formation as a developmental process focusing on the role of plant hormones and on the effect of rooting conditions on plant performance. Since the discovery of the rhizogenic effect of auxin ca. 70 yr ago, no new broadly applicable rooting treatments have been developed. Recent research, though, may lead to new rooting procedures. Application of wounding-related compounds may be effective in difficult-to-root crops. Furthermore, by adapting conditions during the propagation phase, microcuttings with an enhanced capability to root may be produced. These conditions include elongation of stems (by etiolation or double-layer culture) and repeated subculture (rejuvenation; i.e. transition from adult to juvenile). Data are presented that show that during tissue culture maturation (transition from juvenile to adult) also occurs. The conditions during the in vitro rooting treatment may have a tremendous effect on performance after transfer ex vitro. In particular, accumulation of ethylene during in vitro rooting may have a devastating effect. Addition of stress-protecting compounds during propagation or rooting in vitro may enhance the performance ex vitro
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