Occurrence of differential meiotic associations and additional chromosomes in the embryo-sac mother cells of Allium roylei Stearn
Abstract A small population of complex translocation heterozygote plants of Allium roylei from the Bani region of Jammu Province was studied for meiosis in the female track. This study resulted in identification of two variants, having embryo-sac mother cells (EMCs) with more than 16 chromosomes. EM...
Ausführliche Beschreibung
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| Autor*in: |
SHARMA, GEETA [verfasserIn] GOHIL, RAVINDER N. [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2011 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Journal of Genetics - Springer India, 1955, 90(2011), 1 vom: Apr., Seite 45-49 |
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| Übergeordnetes Werk: |
volume:90 ; year:2011 ; number:1 ; month:04 ; pages:45-49 |
| Links: |
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| DOI / URN: |
10.1007/s12041-011-0031-8 |
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| Katalog-ID: |
SPR024150908 |
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| 520 | |a Abstract A small population of complex translocation heterozygote plants of Allium roylei from the Bani region of Jammu Province was studied for meiosis in the female track. This study resulted in identification of two variants, having embryo-sac mother cells (EMCs) with more than 16 chromosomes. EMCs of the remaining plants invariably had diploid (2n = 16) chromosome complement. Female meiosis, in general, was found to be abnormal, with nearly 23% and 11% chromosomes associating as quadrivalents or trivalents at prophase I and at metaphase I, respectively. This was followed by irregular segregation of chromosomes at anaphase I. Amongst the variants; one had 38% EMCs with eight bivalents plus two small sized chromosomes. Their small size, dispensable nature and tendency to affect the pairing behaviour of normal complement are some of the features that latter chromosomes share with the B chromosomes. Seventeen to nineteen chromosomes were observed in 35% EMCs of other variant; the remaining cells had 16 chromosomes. Chromosomal behaviour in both kind of cells (euploid and aneuploid) was more or less similar. Unlike female meiocytes, male meiocytes analysed earlier of this strain always had 16 chromosomes which paired to form extremely complex associations involving 3–16 chromosomes. The most likely cause of this asynchrony with regards to number of chromosomes involved in multivalent formation seems to be interaction of genes controlling chiasma formation with the different physiological conditions of male and female meiocytes. | ||
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| 650 | 4 | |a chiasma frequency |7 (dpeaa)DE-He213 | |
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10.1007/s12041-011-0031-8 doi (DE-627)SPR024150908 (SPR)s12041-011-0031-8-e DE-627 ger DE-627 rakwb eng SHARMA, GEETA verfasserin aut Occurrence of differential meiotic associations and additional chromosomes in the embryo-sac mother cells of Allium roylei Stearn 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract A small population of complex translocation heterozygote plants of Allium roylei from the Bani region of Jammu Province was studied for meiosis in the female track. This study resulted in identification of two variants, having embryo-sac mother cells (EMCs) with more than 16 chromosomes. EMCs of the remaining plants invariably had diploid (2n = 16) chromosome complement. Female meiosis, in general, was found to be abnormal, with nearly 23% and 11% chromosomes associating as quadrivalents or trivalents at prophase I and at metaphase I, respectively. This was followed by irregular segregation of chromosomes at anaphase I. Amongst the variants; one had 38% EMCs with eight bivalents plus two small sized chromosomes. Their small size, dispensable nature and tendency to affect the pairing behaviour of normal complement are some of the features that latter chromosomes share with the B chromosomes. Seventeen to nineteen chromosomes were observed in 35% EMCs of other variant; the remaining cells had 16 chromosomes. Chromosomal behaviour in both kind of cells (euploid and aneuploid) was more or less similar. Unlike female meiocytes, male meiocytes analysed earlier of this strain always had 16 chromosomes which paired to form extremely complex associations involving 3–16 chromosomes. The most likely cause of this asynchrony with regards to number of chromosomes involved in multivalent formation seems to be interaction of genes controlling chiasma formation with the different physiological conditions of male and female meiocytes. embryo-sac mother cells (dpeaa)DE-He213 hyperploidy (dpeaa)DE-He213 multivalent formation (dpeaa)DE-He213 chiasma frequency (dpeaa)DE-He213 GOHIL, RAVINDER N. verfasserin aut Enthalten in Journal of Genetics Springer India, 1955 90(2011), 1 vom: Apr., Seite 45-49 (DE-627)SPR024069582 nnns volume:90 year:2011 number:1 month:04 pages:45-49 https://dx.doi.org/10.1007/s12041-011-0031-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_21 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_30 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2002 GBV_ILN_2004 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2012 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_2021 GBV_ILN_2088 GBV_ILN_2190 GBV_ILN_2244 AR 90 2011 1 04 45-49 |
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10.1007/s12041-011-0031-8 doi (DE-627)SPR024150908 (SPR)s12041-011-0031-8-e DE-627 ger DE-627 rakwb eng SHARMA, GEETA verfasserin aut Occurrence of differential meiotic associations and additional chromosomes in the embryo-sac mother cells of Allium roylei Stearn 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract A small population of complex translocation heterozygote plants of Allium roylei from the Bani region of Jammu Province was studied for meiosis in the female track. This study resulted in identification of two variants, having embryo-sac mother cells (EMCs) with more than 16 chromosomes. EMCs of the remaining plants invariably had diploid (2n = 16) chromosome complement. Female meiosis, in general, was found to be abnormal, with nearly 23% and 11% chromosomes associating as quadrivalents or trivalents at prophase I and at metaphase I, respectively. This was followed by irregular segregation of chromosomes at anaphase I. Amongst the variants; one had 38% EMCs with eight bivalents plus two small sized chromosomes. Their small size, dispensable nature and tendency to affect the pairing behaviour of normal complement are some of the features that latter chromosomes share with the B chromosomes. Seventeen to nineteen chromosomes were observed in 35% EMCs of other variant; the remaining cells had 16 chromosomes. Chromosomal behaviour in both kind of cells (euploid and aneuploid) was more or less similar. Unlike female meiocytes, male meiocytes analysed earlier of this strain always had 16 chromosomes which paired to form extremely complex associations involving 3–16 chromosomes. The most likely cause of this asynchrony with regards to number of chromosomes involved in multivalent formation seems to be interaction of genes controlling chiasma formation with the different physiological conditions of male and female meiocytes. embryo-sac mother cells (dpeaa)DE-He213 hyperploidy (dpeaa)DE-He213 multivalent formation (dpeaa)DE-He213 chiasma frequency (dpeaa)DE-He213 GOHIL, RAVINDER N. verfasserin aut Enthalten in Journal of Genetics Springer India, 1955 90(2011), 1 vom: Apr., Seite 45-49 (DE-627)SPR024069582 nnns volume:90 year:2011 number:1 month:04 pages:45-49 https://dx.doi.org/10.1007/s12041-011-0031-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_21 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_30 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2002 GBV_ILN_2004 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2012 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_2021 GBV_ILN_2088 GBV_ILN_2190 GBV_ILN_2244 AR 90 2011 1 04 45-49 |
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10.1007/s12041-011-0031-8 doi (DE-627)SPR024150908 (SPR)s12041-011-0031-8-e DE-627 ger DE-627 rakwb eng SHARMA, GEETA verfasserin aut Occurrence of differential meiotic associations and additional chromosomes in the embryo-sac mother cells of Allium roylei Stearn 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract A small population of complex translocation heterozygote plants of Allium roylei from the Bani region of Jammu Province was studied for meiosis in the female track. This study resulted in identification of two variants, having embryo-sac mother cells (EMCs) with more than 16 chromosomes. EMCs of the remaining plants invariably had diploid (2n = 16) chromosome complement. Female meiosis, in general, was found to be abnormal, with nearly 23% and 11% chromosomes associating as quadrivalents or trivalents at prophase I and at metaphase I, respectively. This was followed by irregular segregation of chromosomes at anaphase I. Amongst the variants; one had 38% EMCs with eight bivalents plus two small sized chromosomes. Their small size, dispensable nature and tendency to affect the pairing behaviour of normal complement are some of the features that latter chromosomes share with the B chromosomes. Seventeen to nineteen chromosomes were observed in 35% EMCs of other variant; the remaining cells had 16 chromosomes. Chromosomal behaviour in both kind of cells (euploid and aneuploid) was more or less similar. Unlike female meiocytes, male meiocytes analysed earlier of this strain always had 16 chromosomes which paired to form extremely complex associations involving 3–16 chromosomes. The most likely cause of this asynchrony with regards to number of chromosomes involved in multivalent formation seems to be interaction of genes controlling chiasma formation with the different physiological conditions of male and female meiocytes. embryo-sac mother cells (dpeaa)DE-He213 hyperploidy (dpeaa)DE-He213 multivalent formation (dpeaa)DE-He213 chiasma frequency (dpeaa)DE-He213 GOHIL, RAVINDER N. verfasserin aut Enthalten in Journal of Genetics Springer India, 1955 90(2011), 1 vom: Apr., Seite 45-49 (DE-627)SPR024069582 nnns volume:90 year:2011 number:1 month:04 pages:45-49 https://dx.doi.org/10.1007/s12041-011-0031-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_21 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_30 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2002 GBV_ILN_2004 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2012 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_2021 GBV_ILN_2088 GBV_ILN_2190 GBV_ILN_2244 AR 90 2011 1 04 45-49 |
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10.1007/s12041-011-0031-8 doi (DE-627)SPR024150908 (SPR)s12041-011-0031-8-e DE-627 ger DE-627 rakwb eng SHARMA, GEETA verfasserin aut Occurrence of differential meiotic associations and additional chromosomes in the embryo-sac mother cells of Allium roylei Stearn 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract A small population of complex translocation heterozygote plants of Allium roylei from the Bani region of Jammu Province was studied for meiosis in the female track. This study resulted in identification of two variants, having embryo-sac mother cells (EMCs) with more than 16 chromosomes. EMCs of the remaining plants invariably had diploid (2n = 16) chromosome complement. Female meiosis, in general, was found to be abnormal, with nearly 23% and 11% chromosomes associating as quadrivalents or trivalents at prophase I and at metaphase I, respectively. This was followed by irregular segregation of chromosomes at anaphase I. Amongst the variants; one had 38% EMCs with eight bivalents plus two small sized chromosomes. Their small size, dispensable nature and tendency to affect the pairing behaviour of normal complement are some of the features that latter chromosomes share with the B chromosomes. Seventeen to nineteen chromosomes were observed in 35% EMCs of other variant; the remaining cells had 16 chromosomes. Chromosomal behaviour in both kind of cells (euploid and aneuploid) was more or less similar. Unlike female meiocytes, male meiocytes analysed earlier of this strain always had 16 chromosomes which paired to form extremely complex associations involving 3–16 chromosomes. The most likely cause of this asynchrony with regards to number of chromosomes involved in multivalent formation seems to be interaction of genes controlling chiasma formation with the different physiological conditions of male and female meiocytes. embryo-sac mother cells (dpeaa)DE-He213 hyperploidy (dpeaa)DE-He213 multivalent formation (dpeaa)DE-He213 chiasma frequency (dpeaa)DE-He213 GOHIL, RAVINDER N. verfasserin aut Enthalten in Journal of Genetics Springer India, 1955 90(2011), 1 vom: Apr., Seite 45-49 (DE-627)SPR024069582 nnns volume:90 year:2011 number:1 month:04 pages:45-49 https://dx.doi.org/10.1007/s12041-011-0031-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_21 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_30 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2002 GBV_ILN_2004 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2012 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_2021 GBV_ILN_2088 GBV_ILN_2190 GBV_ILN_2244 AR 90 2011 1 04 45-49 |
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10.1007/s12041-011-0031-8 doi (DE-627)SPR024150908 (SPR)s12041-011-0031-8-e DE-627 ger DE-627 rakwb eng SHARMA, GEETA verfasserin aut Occurrence of differential meiotic associations and additional chromosomes in the embryo-sac mother cells of Allium roylei Stearn 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract A small population of complex translocation heterozygote plants of Allium roylei from the Bani region of Jammu Province was studied for meiosis in the female track. This study resulted in identification of two variants, having embryo-sac mother cells (EMCs) with more than 16 chromosomes. EMCs of the remaining plants invariably had diploid (2n = 16) chromosome complement. Female meiosis, in general, was found to be abnormal, with nearly 23% and 11% chromosomes associating as quadrivalents or trivalents at prophase I and at metaphase I, respectively. This was followed by irregular segregation of chromosomes at anaphase I. Amongst the variants; one had 38% EMCs with eight bivalents plus two small sized chromosomes. Their small size, dispensable nature and tendency to affect the pairing behaviour of normal complement are some of the features that latter chromosomes share with the B chromosomes. Seventeen to nineteen chromosomes were observed in 35% EMCs of other variant; the remaining cells had 16 chromosomes. Chromosomal behaviour in both kind of cells (euploid and aneuploid) was more or less similar. Unlike female meiocytes, male meiocytes analysed earlier of this strain always had 16 chromosomes which paired to form extremely complex associations involving 3–16 chromosomes. The most likely cause of this asynchrony with regards to number of chromosomes involved in multivalent formation seems to be interaction of genes controlling chiasma formation with the different physiological conditions of male and female meiocytes. embryo-sac mother cells (dpeaa)DE-He213 hyperploidy (dpeaa)DE-He213 multivalent formation (dpeaa)DE-He213 chiasma frequency (dpeaa)DE-He213 GOHIL, RAVINDER N. verfasserin aut Enthalten in Journal of Genetics Springer India, 1955 90(2011), 1 vom: Apr., Seite 45-49 (DE-627)SPR024069582 nnns volume:90 year:2011 number:1 month:04 pages:45-49 https://dx.doi.org/10.1007/s12041-011-0031-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_21 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_30 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2002 GBV_ILN_2004 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2012 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_2021 GBV_ILN_2088 GBV_ILN_2190 GBV_ILN_2244 AR 90 2011 1 04 45-49 |
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Enthalten in Journal of Genetics 90(2011), 1 vom: Apr., Seite 45-49 volume:90 year:2011 number:1 month:04 pages:45-49 |
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Enthalten in Journal of Genetics 90(2011), 1 vom: Apr., Seite 45-49 volume:90 year:2011 number:1 month:04 pages:45-49 |
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This study resulted in identification of two variants, having embryo-sac mother cells (EMCs) with more than 16 chromosomes. EMCs of the remaining plants invariably had diploid (2n = 16) chromosome complement. Female meiosis, in general, was found to be abnormal, with nearly 23% and 11% chromosomes associating as quadrivalents or trivalents at prophase I and at metaphase I, respectively. This was followed by irregular segregation of chromosomes at anaphase I. Amongst the variants; one had 38% EMCs with eight bivalents plus two small sized chromosomes. Their small size, dispensable nature and tendency to affect the pairing behaviour of normal complement are some of the features that latter chromosomes share with the B chromosomes. Seventeen to nineteen chromosomes were observed in 35% EMCs of other variant; the remaining cells had 16 chromosomes. Chromosomal behaviour in both kind of cells (euploid and aneuploid) was more or less similar. Unlike female meiocytes, male meiocytes analysed earlier of this strain always had 16 chromosomes which paired to form extremely complex associations involving 3–16 chromosomes. 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SHARMA, GEETA misc embryo-sac mother cells misc hyperploidy misc multivalent formation misc chiasma frequency Occurrence of differential meiotic associations and additional chromosomes in the embryo-sac mother cells of Allium roylei Stearn |
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Occurrence of differential meiotic associations and additional chromosomes in the embryo-sac mother cells of Allium roylei Stearn embryo-sac mother cells (dpeaa)DE-He213 hyperploidy (dpeaa)DE-He213 multivalent formation (dpeaa)DE-He213 chiasma frequency (dpeaa)DE-He213 |
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Occurrence of differential meiotic associations and additional chromosomes in the embryo-sac mother cells of Allium roylei Stearn |
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Occurrence of differential meiotic associations and additional chromosomes in the embryo-sac mother cells of Allium roylei Stearn |
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occurrence of differential meiotic associations and additional chromosomes in the embryo-sac mother cells of allium roylei stearn |
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Occurrence of differential meiotic associations and additional chromosomes in the embryo-sac mother cells of Allium roylei Stearn |
| abstract |
Abstract A small population of complex translocation heterozygote plants of Allium roylei from the Bani region of Jammu Province was studied for meiosis in the female track. This study resulted in identification of two variants, having embryo-sac mother cells (EMCs) with more than 16 chromosomes. EMCs of the remaining plants invariably had diploid (2n = 16) chromosome complement. Female meiosis, in general, was found to be abnormal, with nearly 23% and 11% chromosomes associating as quadrivalents or trivalents at prophase I and at metaphase I, respectively. This was followed by irregular segregation of chromosomes at anaphase I. Amongst the variants; one had 38% EMCs with eight bivalents plus two small sized chromosomes. Their small size, dispensable nature and tendency to affect the pairing behaviour of normal complement are some of the features that latter chromosomes share with the B chromosomes. Seventeen to nineteen chromosomes were observed in 35% EMCs of other variant; the remaining cells had 16 chromosomes. Chromosomal behaviour in both kind of cells (euploid and aneuploid) was more or less similar. Unlike female meiocytes, male meiocytes analysed earlier of this strain always had 16 chromosomes which paired to form extremely complex associations involving 3–16 chromosomes. The most likely cause of this asynchrony with regards to number of chromosomes involved in multivalent formation seems to be interaction of genes controlling chiasma formation with the different physiological conditions of male and female meiocytes. |
| abstractGer |
Abstract A small population of complex translocation heterozygote plants of Allium roylei from the Bani region of Jammu Province was studied for meiosis in the female track. This study resulted in identification of two variants, having embryo-sac mother cells (EMCs) with more than 16 chromosomes. EMCs of the remaining plants invariably had diploid (2n = 16) chromosome complement. Female meiosis, in general, was found to be abnormal, with nearly 23% and 11% chromosomes associating as quadrivalents or trivalents at prophase I and at metaphase I, respectively. This was followed by irregular segregation of chromosomes at anaphase I. Amongst the variants; one had 38% EMCs with eight bivalents plus two small sized chromosomes. Their small size, dispensable nature and tendency to affect the pairing behaviour of normal complement are some of the features that latter chromosomes share with the B chromosomes. Seventeen to nineteen chromosomes were observed in 35% EMCs of other variant; the remaining cells had 16 chromosomes. Chromosomal behaviour in both kind of cells (euploid and aneuploid) was more or less similar. Unlike female meiocytes, male meiocytes analysed earlier of this strain always had 16 chromosomes which paired to form extremely complex associations involving 3–16 chromosomes. The most likely cause of this asynchrony with regards to number of chromosomes involved in multivalent formation seems to be interaction of genes controlling chiasma formation with the different physiological conditions of male and female meiocytes. |
| abstract_unstemmed |
Abstract A small population of complex translocation heterozygote plants of Allium roylei from the Bani region of Jammu Province was studied for meiosis in the female track. This study resulted in identification of two variants, having embryo-sac mother cells (EMCs) with more than 16 chromosomes. EMCs of the remaining plants invariably had diploid (2n = 16) chromosome complement. Female meiosis, in general, was found to be abnormal, with nearly 23% and 11% chromosomes associating as quadrivalents or trivalents at prophase I and at metaphase I, respectively. This was followed by irregular segregation of chromosomes at anaphase I. Amongst the variants; one had 38% EMCs with eight bivalents plus two small sized chromosomes. Their small size, dispensable nature and tendency to affect the pairing behaviour of normal complement are some of the features that latter chromosomes share with the B chromosomes. Seventeen to nineteen chromosomes were observed in 35% EMCs of other variant; the remaining cells had 16 chromosomes. Chromosomal behaviour in both kind of cells (euploid and aneuploid) was more or less similar. Unlike female meiocytes, male meiocytes analysed earlier of this strain always had 16 chromosomes which paired to form extremely complex associations involving 3–16 chromosomes. The most likely cause of this asynchrony with regards to number of chromosomes involved in multivalent formation seems to be interaction of genes controlling chiasma formation with the different physiological conditions of male and female meiocytes. |
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