Results 161 to 170 of about 2,078 (174)

NEW AND NOTEWORTHY SPECIES OF BOECHERA (BRASSICACEAE) II: APOMICTIC HYBRIDS

Harvard Papers in Botany, 2007
ABSTRACT The following nomenclatural adjustments are proposed for the apomictic, hybrid species of Boechera to make the names available for the forthcoming account of the Brassicaceae in the Flora of North America. Two new species of Boechera (B. elkoensis and B. peirsonii) are described, and a new name (B.
MICHAEL D. WINDHAM, IHSAN A. AL-SHEHBAZ
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Allelic Sequence Divergence in the Apomictic Boechera holboellii Complex

2009
It has been suggested that the absence of meiosis in asexual lineages should lead to higher interallelic divergence at any given locus within an individual (i.e., allelic sequence divergence – ASD) compared to sexual populations (i.e., Meselson effect; Mark Welch and Meselson 2000).
Jose M. Corral, Marcin Piwczynski, Tim F. Sharbel   +2 more
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Molecular signatures of apomictic and sexual ovules in the Boechera holboellii complex

The Plant Journal, 2009
SummaryApomixis, a natural form of asexual seed production in plants, has evolved independently in various taxa, and represents an important potential technology for agriculture. The switch to apomixis is based on de‐regulation of developmental pathways originally leading to sexual seed formation.
Sharbel, T., Voigt, M., Corral, J., Thiel, T., Varshney, A., Kumlehn, J., Vogel, H., Rotter, B.   +7 more
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A new species of Boechera (Brassicaceae) from Utah and Colorado

Brittonia, 2003
Abstract A new species of Boechera (Brassicaceae) from Utah and Colorado. Brittonia 55: 1–3. 2003.—A new species, Boechera glareosa, is described and a key is provided to separate it from its apparent closest relative, B. gunnisoniana (Rollins) W. A. Weber.
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The Genus Boechera as a Model for Apomixis Research

AbstractThe genusBoechera, a prominent member of the tribe Boechereae within the family Brassicaceae, has emerged as an exceptional model for apomixis research, owing to its unique evolutionary, reproductive, and genomic characteristics. With over 480 genetically distinct taxa and a distribution spanning North America, Greenland, and parts of Asia ...
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Does hybridization drive the transition to asexuality in diploid Boechera?

Evolution; international journal of organic evolution, 2012
Gametophytic apomixis is a common form of asexual reproduction in plants. Virtually all gametophytic apomicts are polyploids, and some view polyploidy as a prerequisite for the transition to apomixis. However, any causal link between apomixis and polyploidy is complicated by the fact that most apomictic polyploids are allopolyploids, leading some to ...
Beck, James B., Alexander, Patrick J., Allphin, Loreen, Al-Shehbaz, Ihsan A., Rushworth, Catherine A., Bailey, C. Donovan, Windham, Michael D.   +6 more
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Boechera Summit 2011

Molecular Ecology, 2011
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АПОМИКСИС В РОДЕ BOECHERA (BRASSICACEAE): ТЕКУЩЕЕ СОСТОЯНИЕ ПРОБЛЕМЫ

Ботанический журнал, 2017
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DOES HYBRIDIZATION DRIVE THE TRANSITION TO ASEXUALITY IN DIPLOID BOECHERA?

Evolution, 2011
James B. Beck, Patrick J. Alexander, Loreen Allphin, Ihsan A. Al-Shehbaz, Catherine Rushworth, C. Donovan Bailey, Michael D. Windham   +6 more
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Doğal Apomikt Boechera Türlerinde FIS2 Geninin Karakterizasyonu

2007
YILMAZ, SİBEL, TAŞKIN, KEMAL MELİK
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