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The exploration of somaclonal variation is an approach that could provide date palm breeding programs with new genotypes. Naturally occurring or induced variants may have superior agronomic quality and/or enhanced performance but could also harbor new traits such as tolerance to drought and salinity or resistance to major diseases i.e. bayoud. This chapter summarizes recent progress in terms of studying...
Traditionally date palm (Phoenix dactylifera L.) is propagated through offshoots but limited numbers bar their wide distribution. With the advent of tissue culture massive expansion of elite cultivars was made possible, but commercially in vitro plants were introduced only in the last two decades. Propagation of date palm through tissue culture generally results in true-to-type plants but some off-types...
Somaclonal variation is a general phenomenon in tissue culture-regenerated plants of many species. Several typical abnormal phenotypes have been detected in tissue culture-propagated date palms. Variation from the source phenotypes is undesirable in the commercial propagation of specific cultivars, and efforts have been made to eliminate the formation of these off-types. Some of these phenotypes resemble...
In vitro-selection of date palm cultivars with an enhanced tolerance to abiotic stress represents a great support to the breeding program. This could lead to variants with superior agronomic quality and/or enhanced performance but also to genotypes harboring new traits such as tolerance to drought and salinity. In an era where a race has started towards functional food and nutraceuticals,...
Date palm (Phoenix dactylifera L.) is the most economically important food crop in Moroccan oasean agricultural areas, contributing to preserving an arid ecosystem threatened by desertification. The bayoud disease, caused by the fungus Fusarium oxysporum f. sp. albedinis (Foa), is incontestably the most serious disease affecting date palm in North Africa. The selection for resistance among date palm...
Micropropagation technique is used for rapid shoot proliferation of date palm. Somatic embryogenesis is meant for clonal propagation of date palm and genetic gains can be captured through it, which is rather difficult by zygotic embryo due to its heterozygous nature. Genetic variability is highly desirable for the genetic improvement of crops, which can be either spontaneous or induced by mutagen...
The long life cycle of date palm (Phoenix dactylifera L.) makes genetic improvement through traditional breeding methods a tedious endeavor. Biotechnology offers advanced tools to augment genetic improvement efforts. In vitro selection technique, a major application of plant biotechnology, allows the isolation of mutant cells and the regeneration of plants exhibiting desired new traits. Mutations...
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