B chromosome in a rice aneuploid variation

Z. K. Cheng; H. X. Yu; H. H. Yan; M. H. Gu; L. H. Zhu

doi:10.1007/s001220051516

B chromosome in a rice aneuploid variation

Z. K. Cheng, H. X. Yu, H. H. Yan, M. H. Gu, L. H. Zhu

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12 Scopus citations

Abstract

An awned rice plant was discovered among the progeny of the triploid Zhongxian 3037. Cytological investigation showed that this awned plant was a variation with extra chromosomes. Based on the properties of the extra chromosomes during both meiosis and mitosis - e.g., short stature, darkly staining, instability in chromosome number, and lack of synapsis with A chromosomes - they could be considered to be B chromosomes in rice. The B chromosome(s) in both asexual and sexual progenies exhibited a unique segregation that is different from that of telotrisomics and other aneuploids. Moreover molecular marker analysis detected no dosage effects between the B-chromosome plant and the normal diploid of Zhongxian 3037, indicating that the B chromosomes might not be directly derived from any A-chromosome fragments in rice.

Original language	English (US)
Pages (from-to)	564-568
Number of pages	5
Journal	Theoretical and Applied Genetics
Volume	101
Issue number	4
DOIs	https://doi.org/10.1007/s001220051516
State	Published - Jan 1 2000

Keywords

B chromosome
Rice

ASJC Scopus subject areas

Biotechnology
Agronomy and Crop Science
Genetics

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10.1007/s001220051516

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title = "B chromosome in a rice aneuploid variation",

abstract = "An awned rice plant was discovered among the progeny of the triploid Zhongxian 3037. Cytological investigation showed that this awned plant was a variation with extra chromosomes. Based on the properties of the extra chromosomes during both meiosis and mitosis - e.g., short stature, darkly staining, instability in chromosome number, and lack of synapsis with A chromosomes - they could be considered to be B chromosomes in rice. The B chromosome(s) in both asexual and sexual progenies exhibited a unique segregation that is different from that of telotrisomics and other aneuploids. Moreover molecular marker analysis detected no dosage effects between the B-chromosome plant and the normal diploid of Zhongxian 3037, indicating that the B chromosomes might not be directly derived from any A-chromosome fragments in rice.",

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T1 - B chromosome in a rice aneuploid variation

AU - Cheng, Z. K.

AU - Yu, H. X.

AU - Yan, H. H.

AU - Gu, M. H.

AU - Zhu, L. H.

PY - 2000/1/1

Y1 - 2000/1/1

N2 - An awned rice plant was discovered among the progeny of the triploid Zhongxian 3037. Cytological investigation showed that this awned plant was a variation with extra chromosomes. Based on the properties of the extra chromosomes during both meiosis and mitosis - e.g., short stature, darkly staining, instability in chromosome number, and lack of synapsis with A chromosomes - they could be considered to be B chromosomes in rice. The B chromosome(s) in both asexual and sexual progenies exhibited a unique segregation that is different from that of telotrisomics and other aneuploids. Moreover molecular marker analysis detected no dosage effects between the B-chromosome plant and the normal diploid of Zhongxian 3037, indicating that the B chromosomes might not be directly derived from any A-chromosome fragments in rice.

AB - An awned rice plant was discovered among the progeny of the triploid Zhongxian 3037. Cytological investigation showed that this awned plant was a variation with extra chromosomes. Based on the properties of the extra chromosomes during both meiosis and mitosis - e.g., short stature, darkly staining, instability in chromosome number, and lack of synapsis with A chromosomes - they could be considered to be B chromosomes in rice. The B chromosome(s) in both asexual and sexual progenies exhibited a unique segregation that is different from that of telotrisomics and other aneuploids. Moreover molecular marker analysis detected no dosage effects between the B-chromosome plant and the normal diploid of Zhongxian 3037, indicating that the B chromosomes might not be directly derived from any A-chromosome fragments in rice.

KW - B chromosome

KW - Rice

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B chromosome in a rice aneuploid variation

Abstract

Keywords

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