«APOMICTICALLY»に関連する英語の本
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necessary for the development of apomictic embryo sacs and for the formation of
the endosperm (Asker & Jerling, 1992). 1n some cases, counterfeit hybridisation
occurs and a non-reduced egg develops apomictically after pollination.
2
Biology of the Red Algae
In another study, the presumed meiotic polysporangia of Gonimophyllum
skottsbergii (collected in central California) developed apomictically, and meiosis
did not occur during subsequent polyspore germination (Goff unpubl.).
Kathleen M. Cole, Robert G. Sheath, 1990
C. Apomixy The utility of apomixis, a natural phenomenon by which embryos are
formed without meiosis or fertilization, needs to be explored in a cross-pollinated
taxon like Hevea, since apomictically produced embryos are genetically ...
4
Handbook of Phycological Methods: Developmental and ...
E. Possible problems Some female plants of both Gigartina species reproduce
apomictically. Although apomictically produced cystocarps are usually detected
before field-collected female blades are used in crosses, the use of cloned
female ...
5
Weed Science and Weed Control in Southeast Asia: An ...
Plants arising from the separation of ramets or from asexually (apomictically)
produced seeds together form clones. Whilst most creeping perennials
reproduce both by seed and vegetatively, some (e.g. Oxalis latifolia) reproduce
only by ...
J. T. Swarbrick, B. L. Mercado, 1987
6
DNA Fingerprinting: State of the Science
Thus clones can evolve either from apomictically derived seeds or by some
means of vegetative propagation. Whereas seedlings and root suckers of e.g.
blackberries are easily distinguished on habitus the first one or two years in the
field, it is ...
7
Some Mathematical Questions in Biology--sex Allocation and ...
The performance of sexually- and apomictically- generated progeny, grown
under field conditions, means + 1 s.e. Test of significance was a Wilcoxon rank
sum test. Differences between densities were significant for a. and b. , but no ...
In a facultative apomict the situation is the same, but it may be very hard to
distinguish apomictically produced seeds from sexually produced and thus to
separate generations. continuously,193 and thus phenotypic selection within a
genet is ...
Sven Asker, Lenn Jerling, 1992
Apomictically produced embryos will give rise to female offspring only, whereas I
am assuming that sexually produced embryos give rise to male and female
offspring in equal ratio. Thus, it should be possible to estimate the proportion of ...
... semi-prostrate, purple-anthered strain with 40 chromosomes and extremely
irregular meiotic behaviour, reproducing apomictically; and the common type with
purple anthers and 50 chromosomes, reproducing apomictically. The second
type ...
P. J. Skerman, Fernando Riveros, 1990
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A Grapple a Day...Won't do Much for You
... variety Fertility with the triploid variety Beurre Diel, suggested that they may have been apomictically, or in part apomictically, reproduced.". «Huffington Post, 3月 07»
