Results 151 to 160 of about 5,278 (179)

Asexual propagation of variegated Lilium longiflorum ‘Chotaro’

Scientia Horticulturae, 1989
Abstract Scale propagation of variegated Lilium longiflorum cultivar ‘Chotaro’ produced more than 93% of variegated plants from middle scales (MS), inner scales (IS) and innermost scales (IMS). Outer scales (OS) produced a lower percentage of variegated plants and a higher percentage of non-variegated (green) plants than the other scales.
E. Matsuo, M. Matsuzawa, Y. Sakata, K. Arisumi   +3 more
exaly   +2 more sources

Telomerase deficiency in a colonial ascidian after prolonged asexual propagation

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, 2011
In organisms that propagate by agametic cloning, the parental body is the reproductive unit and fitness increases with clonal size, so that colonial metazoans, despite lack of experimental data, have been considered potentially immortal. Using asexual propagation rate as a measure of somatic performance, and telomerase activity and relative telomere ...
Helen Nilsson Sköld, Christine A Wood, John D D Bishop   +2 more
exaly   +3 more sources

Breeding Methods for Outcrossing Plant Species: III. Asexual Propagation

2020
Thomas J Orton
exaly   +2 more sources

Transmission of freshwater myxozoans during the asexual propagation of invertebrate hosts

International Journal for Parasitology, 2006
The phylum Myxozoa contains over 1350 species almost all of which are considered to be obligate parasites of aquatic animals. The phylum is composed of two classes, the Myxosporea and the Malacosporea, species of which are important pathogens responsible for severe economic losses in cultured fisheries.
D J, Morris, A, Adams
openaire   +2 more sources

Somatic function of the micronucleus of Stylonychia mytilus during asexual propagation

European Journal of Protistology, 1991
The somatic function of the micronucleus during vegetative propagation of the hypotrichous ciliate Stylonychia mytilus was investigated, by generating amicronucleate cell lines with microinjection or amputation. The amicronucleate cell lines exhibited reduction in fission rate and ingestion shortly after the loss of the micronucleus.
L, Lu, S F, Ng
openaire   +2 more sources

Recombination in Sexually and Asexually Propagated Higher Plants

1985
The exchange of genetic material (DNA) between homologous chromosomes can either be reciprocal (recombination) or nonreciprocal (gene conversion). Both phenomena are essential for the creation of new genetic variability (LAMB 1984) and they seem to be initiated by identical, complex molecular processes.
Wolfgang Friedt, Gerhard Wenzel
openaire   +1 more source

Axillary Bud in vitro Culture: Asexual Propagation of Maize

1994
Excised axillary buds may be grown on a defined medium and induced to produce sexually mature plants (Raman et al. 1980). Recently, the opportunity to cycle the proliferation of axillary bud cultures has led to the recovery of thousands of plants from an original culture (Walden et al. 1989).
R. I. Greyson, D. B. Walden
openaire   +1 more source

Asexual Propagation of Coffee Through Shoot-Tip Culture

1985
An in vitro propagation method for coffee using shoot-tip culture has been developed. Shoot tips, either terminal or axillary, were initiated on an agar-solidified medium containing half-strength Murashige and Skoog (MS) salts, and the following: i-inositol (100 mg/1), thiamine-HCl (0.4 mg/1), pyridoxine-HCl (0.5 mg/1), nicotinic acid (0.5 mg/1 ...
Meena S. Moses, June E. Sullivan
openaire   +1 more source

A male-expressed rice embryogenic trigger redirected for asexual propagation through seeds

Nature, 2018
The molecular pathways that trigger the initiation of embryogenesis after fertilization in flowering plants, and prevent its occurrence without fertilization, are not well understood1. Here we show in rice (Oryza sativa) that BABY BOOM1 (BBM1), a member of the AP2 family2 of transcription factors that is expressed in sperm cells, has a key role in this
Khanday, Imtiyaz, Skinner, Debra, Yang, Bing, Mercier, Raphaël, Sundaresan, Venkatesan   +4 more
openaire   +3 more sources

Unstable transmission of rice chromosomes without functional centromeric repeats in asexual propagation

Chromosome Research, 2009
During sexual propagation of primary trisomic 8, chromosome 8 breaks in some rice plants, resulting in a telotrisomic (2n+.8S) line. In this study, we observed that the extra short arm of chromosome 8 (.8S) can easily be lost in the telotrisomic, and we determined by fluorescence in-situ hybridization (FISH) analysis that the centromeric region of the ...
Zhiyun, Gong, Hengxiu, Yu, Jian, Huang, Chuandeng, Yi, Minghong, Gu   +4 more
openaire   +2 more sources