Results 151 to 160 of about 3,537 (199)
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Haploidy as a Factor in the Polymorphic Differentiation of the Hymenoptera
Science, 1946Stanley E Flanders
exaly +4 more sources
Nature Biotechnology, 2010
An engineered centromere-specific histone could enable homozygous diploid lines to be generated at high frequency, simplifying crop breeding.
Gregory P Copenhaver, Daphne Preuss
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An engineered centromere-specific histone could enable homozygous diploid lines to be generated at high frequency, simplifying crop breeding.
Gregory P Copenhaver, Daphne Preuss
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1996
Coffee is one of the most important commercial crops grown in many countries. Each day all over the world, millions of coffee lovers enjoy drinking coffee. Judged by total volume, coffee is one of the leading commodities in the international trade. Currently, it provides revenue over $ US 10 billion annually to the producing countries, and work for an ...
Y. Raghuramulu, N. S. Prakash
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Coffee is one of the most important commercial crops grown in many countries. Each day all over the world, millions of coffee lovers enjoy drinking coffee. Judged by total volume, coffee is one of the leading commodities in the international trade. Currently, it provides revenue over $ US 10 billion annually to the producing countries, and work for an ...
Y. Raghuramulu, N. S. Prakash
openaire +1 more source
1996
Most temperate fruit trees are characterized by a long reproductive cycle with several years of a juvenile phase, a tendency to allogamy and a large tree size. They are generally highly heterozygous, outbreeding species, which are asexually propagated. For these reasons, their genetic improvement by conventional methods is time-consuming and limited by
Höfer, Monika, Lespinasse, Yves
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Most temperate fruit trees are characterized by a long reproductive cycle with several years of a juvenile phase, a tendency to allogamy and a large tree size. They are generally highly heterozygous, outbreeding species, which are asexually propagated. For these reasons, their genetic improvement by conventional methods is time-consuming and limited by
Höfer, Monika, Lespinasse, Yves
openaire +2 more sources
2008
Newly developed gynogenesis and androgenesis methods are described for tef. The diminutive floral structures of tef are problematic and have necessitated the development of spikelet culture and more effective treatments. Media composi- tion has been optimised.
L. Gugsa, J. Kumlehn
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Newly developed gynogenesis and androgenesis methods are described for tef. The diminutive floral structures of tef are problematic and have necessitated the development of spikelet culture and more effective treatments. Media composi- tion has been optimised.
L. Gugsa, J. Kumlehn
openaire +1 more source
1997
Both Lolium perenne and L. multiflorum are strong outbreeders that exhibit severe inbreeding depression (Bean & Yok-Hwa, 1972; Matzk, 1974) and possess a strict gametophytic self-incompatibility system which involves two major gene loci with modification by the genetic background (Lawrence et al., 1983).
Bode Andersen, S. +4 more
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Both Lolium perenne and L. multiflorum are strong outbreeders that exhibit severe inbreeding depression (Bean & Yok-Hwa, 1972; Matzk, 1974) and possess a strict gametophytic self-incompatibility system which involves two major gene loci with modification by the genetic background (Lawrence et al., 1983).
Bode Andersen, S. +4 more
openaire +2 more sources
1997
Rye (Secale cereale L.) has its origin in southwest Asia. From there it was probably distributed to Russia, and later to western Europe. Only 2–3% of total cereal production falls to rye. Approximately 90% of rye production is concentrated in Europe. The distribution of rye is restricted to the area between the 50th and 60th degree of northern latitude.
Sabine Deimling, Tanja Flehinghaus-Roux
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Rye (Secale cereale L.) has its origin in southwest Asia. From there it was probably distributed to Russia, and later to western Europe. Only 2–3% of total cereal production falls to rye. Approximately 90% of rye production is concentrated in Europe. The distribution of rye is restricted to the area between the 50th and 60th degree of northern latitude.
Sabine Deimling, Tanja Flehinghaus-Roux
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Haploidy in preattachment bovine embryos
Canadian Journal of Genetics and Cytology, 1985Four of twenty-four bovine embryos (day 5–7) subjected to chromosome analysis had haploid cells in metaphase. Two were clearly n/2n. The origin of the haploid cells was determined to be male in two embryos, owing to the presence of a Y chromosome or a male marker chromosome suggesting spermatozoa in division.Key words: embryo, bovine, chromosomes ...
W A, King, L, Picard
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1996
Grapevine is one of the most widely cultivated plants in the world and man has been growing it since the beginning of his recorded history. Despite this, haploid plants have never been observed in Vitis (Olmo, 1976), which would lead to the conclusion that haploidy, the ability to generate haploid (n) plants (sporophytes) rather than diploids (2n), is ...
openaire +1 more source
Grapevine is one of the most widely cultivated plants in the world and man has been growing it since the beginning of his recorded history. Despite this, haploid plants have never been observed in Vitis (Olmo, 1976), which would lead to the conclusion that haploidy, the ability to generate haploid (n) plants (sporophytes) rather than diploids (2n), is ...
openaire +1 more source