Conference Proceedings

FROM SOMATIC VARIATION TO VARIANT PLANTS - MECHANISMS AND APPLICATIONS

PJ LARKIN, PM BANKS, R BHATI, RIS BRETTELL, PA DAVIES, SA RYAN, WR SCOWCROFT, LH SPINDLER, GJ TANNER

GENOME | NATL RESEARCH COUNCIL CANADA | Published : 1989

Abstract

Plants from cell cultures show a high incidence of mutation. The causes of somaclonal variation are unknown, but the genetic consequences have been analysed. A range of genetic events are responsible, including single base changes; altered gene copy number; altered expression of multigene families; chromosome fragment interchanges; and mobilisation of transposable elements. Recent applications of these phenomena are discussed in this paper, for example, in vitro selection, somaclonal variation for agronomic traits, and limited gene transfer from cultured sexual and somatic hybrids. Research is outlined attempting to use high frequency chromosomal interchanges in wheat cell cultures to introg..

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