KSIĄŻKI POWIĄZANE ZE SŁOWEM «POLYEMBRYONY»
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University Botany- Iii : (Plant Taxonomy, Plant Embryology, ...
Different opinions were put farward by embryologists to explain polyembryony in
various ways. Haberlandt (1922) proposed the "necrohormone theory".
According to him the degenerating nucellar cells may produce stimulating
substances ...
2
Competition Science Vision
Polyembryony It is defined as the development of more than one embryos in the
same seed; quite common in citrus and pinus. Polyembryony was first discovered
by Leeuwen- hoek in 1719 in Citrus. There are many methods by which it arises ...
3
Physiology of Woody Plants
In pines, fertilization occurs approximately 13 months after pollination (Konar and
Oberoi, 1969). Polyembryony The presence of more than one embryo is a
common feature of the Pinaceae. Two types of polyembryony occur in
gymnosperms: ...
Stephen G. Pallardy, 2010
4
Conifer Reproductive Biology
Table 7.2 Four polyembryony patterns for conifers and other gymnosperms
Polyembryony patterns Simple (S) and Cleavage (C) polyembrony Simple
polyembryony (S) Cleavage polyembryony (C) No polyembryony (NP) Examples
Cedrus, ...
Polyembryony, Somatic Embryogenesis, and Adventitious Embryony As
mentioned earlier, adventitious embryony is a sporophytic mode of
agamospermy, with similarities to vegetative reproduction. "Somatic embryo
formation" in vitro, ...
Sven Asker, Lenn Jerling, 1992
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In Vitro Embryogenesis in Plants
Although polyembryony may include (1) embryos produced by various types of
apomixis, (2) embryos produced by cells other than the egg cell, and (3) plural
embryos resulting from multiple embryo sacs in an ovule, it is customary to refer
to a ...
7
Parasites and Pathogens: Effects On Host Hormones and Behavior
that have combined haplodiploidy with a clonal form of development called
polyembryony. Each egg laid by a polyembryonic wasp divides to produce a
brood of genetically identical siblings that feed together inside the host. More
unusual still ...
8
Plant Reproductive Ecology : Patterns and Strategies: ...
Polyembryony involves the production of more than one embryo per seed, and
Willson and Burley review three kinds. Simple polyembryony (SPE) is the
presence in each female gametophyte of more than one egg and the potential for
each ...
Jon and Lesley Lovett-Doust Professor of Biology the University of Windsor, 1988
9
In Vitro Culture of Higher Plants
In Vitro Culture of Higher Plants presents an up-to-date and wide-ranging account of the techniques and applications, and has primarily been written in response to practical problems.
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Plant Anatomy and Embryology
Maheshwari (1950) defined polyembryony as the occurrence of more than one
embryo in a seed. Since, the additional embryos generally degenerate in the
course of seed development, the development of more than one embryo is
frequently ...
S. N. Pandey, Ajanta Chadha, 1996
WIADOMOŚCI, KTÓRE ZAWIERAJĄ SŁOWO «POLYEMBRYONY»
Sprawdź, o czym dyskutuje się w prasie krajowej i zagranicznej oraz jak jest stosowane słowo
polyembryony w wiadomościach.
Lifeform of the week: Armadillos
The phenomenon is called obligate polyembryony (meaning it's the rule rather than the exception, unlike the fluky twinning seen in mammal ... «EarthSky, Lut 15»
Gardening: Salt can build up in irrigated soil
Polyembryony is not a common trait among fruit trees but sometimes occur in mango and citrus and then only in certain cultivars. Remove the ... «The News-Press, Wrz 14»
'Atoaa' is Ashanti plum (Spondias mombin)
The phenomenon whereby a single seed produces two or more seedlings is termed polyembryony. Thus, Spondias mombin produces ... «GhanaWeb, Cze 14»
World Cup Mascot: Explaining the Armadillo
Scientists call this obligate polyembryony. Whether it's four, twelve, or some other number, every armadillo litter is made up of genetically ... «NatGeo News Watch, Cze 14»
Wasp cuts bee in half.
Their method of efficiency is that they will lay one egg on the back of a caterpillar, and through the process of polyembryony, the egg multiplies ... «YouTube, Sie 13»
Desarrollo de un nuevo germoplasma en la mejora genética del …
A cytogenetic study of polyembryony in Asparagus officinalis L. Am J Bot 32: 560-569. - Thévenin L (1968). Les Problèmes d' amélioration chez ... «Interempresas, Lip 12»
