Journal ArticleDOI
Radiation-induced low-temperature tolerant cultivars of Chrysanthemum morifoliumRam
C. Broertjes,P. Koene,Th. Pronk +2 more
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Irradiation of rooted cuttings of several chrysanthemum cultivars resulted in a relatively high frequency of mutants tolerant to lower growing temperatures, and some of these mutants have already replaced the original parent cultivars completely within three years after the beginning of the experiment.Abstract:
Irradiation of rooted cuttings of several chrysanthemum cultivars resulted in a relatively high frequency of mutants tolerant to lower growing temperatures (15–16°C instead of 17–20°C as is normally applied). Some of these mutants have already replaced the original parent cultivars completely within three years after the beginning of the experiment.read more
Citations
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Journal ArticleDOI
Breeding crop varieties for stress environments
Abraham Blum,Wayne R. Jordan +1 more
TL;DR: Crop resistance to various environmental stresses is being improved by traditional and costly breeding methods that involve the stability of yield performance over different environments as a major criterion.
Book ChapterDOI
Induced Mutations in Ornamental Plants
TL;DR: Ornamental plants are ideal for the application of mutations induction techniques because many economically important traits are easily monitored after the mutagenic treatment and many ornamental species are heterozygous and often propagated vegetatively; this allows the detection, selection and conservation of mutants in the M1 generation.
Journal ArticleDOI
Radiation-induced low-temperature tolerant solid mutants of Chrysanthemum morifolium Ram.
C. Broertjes,C. A. M. Lock +1 more
TL;DR: From irradiated explants of the chrysanthemum cultivar Parliament solid non-chimeric low-temperature tolerant mutants, some of the mutants flowered 2 weeks earlier than control plants at a temperature of 12°C D/N and looked otherwise identical to the original genotype.
Journal ArticleDOI
Methods for the Selection of Low‐Temperature Tolerant Mutants of Chrysanthemum morifolium Ramat. by Using Irradiated Cell Suspension Cultures
TL;DR: It appeared that the applied selection method (e.q. harvest) had a large impact on the number of early plants obtained, and the percentage of early flowering variants was highest among plants obtained from calli, X-irradiated with 15 Gy and regenerating relatively late (flush B).
Journal ArticleDOI
Methods for selection of low-temperature tolerant mutants of Chrysanthemum morifolium Ramat. Using irradiated cell suspension cultures. III. Comparison of mutants selected with or without preselection in vitro at low-temperature.
TL;DR: It is concluded that, irradiation and subsequent selection of plants from slowly regenerating calli considerably increases the efficiency of selecting LTT mutants.
References
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Journal ArticleDOI
A mutant of a mutant of a mutant of a...: Irradiation of progressive radiation-induced mutants in a mutation-breeding programme with Chrysanthemum morifolium Ram.
TL;DR: It is expected that the latter types, the Miros group, will soon completely supersede the spontaneous or radiation-induced Horim sports and mutants and take over the leading position of the Horim group in the production of all-year-round (AYR) cut flowers.
Journal ArticleDOI
Plantlets from petal segments, petal epidermis, and shoot tips of the periclinal chimera, chrysanthemum morifolium ‘indianapolis'
TL;DR: In vitro propagation of chrysanthemum, which has recently been described, might produce plants not true to type, and Paramutation, true mutation, and environmenal effects are offered as possible explanations.
Journal ArticleDOI
Adventitious shoots: Do they develop from one cell?
C. Broertjes,A. Keen +1 more
TL;DR: A stochastic model has been developed which describes the process of apex formation and by which the expected relative chimera percentages E(RCP's) are calculated and leads to the postulate that the apex of the adventitious shoot is formed from only one (epidermal) cell of the meristem or the callus.
Journal ArticleDOI
Breeding of low temperature tolerant poinsettia (euphorbia pulcherrima) and chrysanthemum by means of mutation induction in in vitro culture
Journal ArticleDOI
Selection for wide temperature adaptation in Chrysanthemum morifolium (Ramat.) Hemsl.
TL;DR: In this article, the authors show that for the character 'time to flowering' genotypes should preferably be selected at low temperatures If low temperature cannot be realized, only rapidly flowering genotype should be selected, and that the delay in flowering at low temperature was accompanied by a similar delay at high temperature.