Download e-book for kindle: A Photographic Guide to Wild Flowers of South Africa by Braam Van Wyk

By Braam Van Wyk

ISBN-10: 1868723909

ISBN-13: 9781868723904

Включая 265 наиболее обычных южноафриканских дикорастущих вида, книга фокусируется на цветах, которых можно часто встретить вдоль дорог, на открытых пространствах, в национальных парках и на популярных прогулочных маршрутах. Книга дополнена исторической, медицинской и культурной информацией о характеризуемых цветах.
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2001). Additional studies which incorporated examining only single-complete-copies of TDNAs, were crucial for the development of more complicated gene designs focused on regulating Ms45 protein expression using chemical switches (discussed in this chapter). The importance of establishing routine rigorous molecular analysis for evaluating transgene design was also uncovered while developing dominant male sterility strategies in maize. It was observed that the male fertility phenotype associated with specific transgene designs were influenced by the choice of the promoter used to express the linked herbicide resistance gene (Unger et al.

Lu et al. While these systems are useful for the regulation of a variety of genes for basic research, the majority of these approaches would be either impractical or inappropriate for the regulation of a gene in commercial crop applications. In contrast, the nonsteroidal ecdysone agonists, tebufenozide, and methoxyfenozide, are available commercially and have potential for field applications (Dhadialla et al. 1998; Martinez and Jepson 1999). A chemical switch system that has shown promise in agriculture relies on the application of a methoxyfenozide ligand to restore male fertility to genetically male sterile maize for hybrid seed production.

1988), rice glutein (Leisy et al. 1989; Takaiwa et al. 1991; Zheng et al. 1993), barley hordein (Marris et al. 1988), rice prolamin (Qu and Takaiwa 2004) and wheat glutenin (Colot et al. 1987) have been the sources for seed-specific promoters, predominantly directing expression in the endosperm (Wobus et al. 1995). Promoters are available that direct gene expression in the embryo or in the aleurone (Opsahl-Sorteberg et al. 2004; Qu and Takaiwa 2004; Furtado and Henry 2005). Recently, several embryo-preferred promoters, a strong oleosin (OLE) promoter, a weaker early embryo protein (EAP1) promoter, and an aleurone-specific lipid transfer protein promoter (LTP2), 1 Maize Protein Expression 15 were used to overexpress transcription factors to significantly increase oil content in maize seeds (Shen et al.

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A Photographic Guide to Wild Flowers of South Africa by Braam Van Wyk


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