Results 131 to 140 of about 25,416 (239)
Limitation of F1 hybrids uniformity law [PDF]
, 2011 Using isozymes as markers, data indicative of polymorphisms in the progeny produced from crossing two beet plants, homozygous on contrastive alleles of enzyme loci, were ...
Evgenii Levites
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CHROMATIN EXTRUSION AND CYTOMIXIS IN POLLEN MOTHER CELLS OF HORDEUM
Hereditas, 2010 HROMATIN extrusion and cytomisis or the transfer of nuclear C material from one cell to an adjacent cell has been reported in many plant genera for a number of years (SARVELLA, 1958). During cytological analysis of a number of barley mutants induced by X-rays and neutrons many pollen mother cells were found with a clear evidence of chromatin extrusion ...
openaire +1 more source
An account of chromosomal damage in PMCs of stripe rust infected barley
CaryologiaA study, on the effects of natural mild fungal infection on meiosis of Barley Pollen Mother Cells (PMCs), was done in order to analyze the chromosomal damage elicited by the pathogenic conditions.
Vivek Singh
doaj +1 more source
On the Possible Transformation and Vanishment of Epistemic Objects [PDF]
, 2016 When considering the question of possible transformation and disappearance of scientific objects, it is useful to distinguish between epistemic and technical objects. This paper presents preliminary observations and offers a typology of obsolescence.
Rheinberger, Hans-Jörg
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Science for gifted children in grade four. [PDF]
, 1959 Thesis (Ed.M.)--Boston ...
Flood, Donna Louise +3 more
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Cytomixis in Pollen Mother Cells of Polygonum tomentosum Schrank.
CYTOLOGIA, 1995 Cytomixis, representing the migration of chromatic material from one cell to another, was observed in PMC's of Polygonum tomentosum Schrank. Cytomixis was observed at all stages of meiosis, but became less frequent in the later stages of meiosis. Direct nuclear fusion and cytoplasmic connections between cells were noted, so that a series of PMC's were ...
openaire +2 more sources
Maize Prolonged Prophase 1 is essential for meiotic progression in pollen mother cells
Crop JournalMeiosis, a critical process for sexual reproduction, requires precise regulation to ensure the correct progression of meiotic stages. In yeast and animals, errors in meiotic recombination and homologous chromosomes synapsis bring a surveillance mechanism
Lingling Pan +6 more
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A genetic and molecular model for flower development in Arabidopsis thaliana [PDF]
, 1991 Cells in developing organisms do not only differentiate, they differentiate in defined patterns. A striking example is the differentiation of flowers, which in most plant families consist of four types of organs: sepals, petals, stamens and carpels, each
Bowman, John L. +6 more
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Cytomixis in pollen mother cells of alopecurus arundinaceus poir.
CYTOLOGIA, 1990 Cytomixis has been observed for the first time in a tetraploid Alopecurus arundinaceus (2n=4x=28). This phenomenon has resulted in the formation of hypo- and hyperploid cells which, however, failed to reach later stages of meiosis.
openaire +2 more sources
Journal of Paediatrics and Child Health, Volume 62, Issue 5, Page 874-878, May 2026.
Sameena Tabassum +3 more
wiley +1 more source