Download Biotechnological approaches to barley improvement by Jochen Kumlehn, Nils Stein PDF

By Jochen Kumlehn, Nils Stein

This quantity deals an updated review of biotechnologically orientated barley learn. it really is dependent into significant sections: the 1st targeting present agricultural demanding situations and techniques to barley development, and the second one supplying insights into fresh advances in technique. best scientists spotlight themes comparable to: the worldwide value of barley; genetic range and genebanks; domestication; shoot and inflorescence structure; reproductive improvement; mineral nutrients; photosynthesis and leaf senescence; grain improvement; drought tolerance; viral and fungal pathogens; phytophagous arthropods; molecular farming; series assets; precipitated genetic edition and TILLING; meiotic recombination; Hordeum bulbosum; genome-wide organization scans; genomic choice; haploid expertise; genetic engineering; and full plant phenomics. delivering entire details on themes starting from primary elements to express functions, this publication deals an invaluable source for scientists, plant breeders, lecturers and complex scholars within the fields of molecular and plant telephone biology, plant biotechnology, and agronomy.

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1995). They are similar to one another at the morphological level, but the rachis of subsp. spontaneum is brittle and the spike is always two rowed. The natural distribution of subsp. spontaneum covers parts of Greece, Turkey, Iran, Iraq, Afghanistan, Syria, Jordan and Israel (Bothmer et al. 2003). It was first discovered in Turkey by the German botanist Carl Koch and was immediately recognised to be the immediate ancestor of cultivated barley. The subspecies is adapted to a broad range of environments and is particularly regarded as a fruitful source of genetic variation with respect to drought and salinity tolerance (Nevo and Chen 2010).

Marinum) and H (all the remaining species). Phylogenetic analysis based on DNA sequence has shown that the I genome is related to Xu and H to Xa. Both the I/Xu and the Xa/H groups are thought to be monophyletic. H. marinum includes the two subspecies gussoneanum and marinum. The former is the donor of the Xa genome and is represented in the allopolyploids H. marinum subsp. gussoneanum (4Â), H. secalinum (4Â), H. capense (4Â) and H. brachyantherum (6Â) (Komatsuda et al. 2001, 2009; Petersen and Seberg 2004; Sun et al.

Spontaneum. The earliest proven remains of subsp. vulgare have been dated to the period 7500–6400 BCE. These are typically found in admixtures with subsp. spontaneum grain (Zohary and Hopf 2000). Field experiments based on harvesting einkorn wheat (T. monococcum) suggest that the most efficient ancient system for harvesting cereals was likely to have involved sickle reaping of plants with a tough rachis (Hillman and Davies 1990). Other possible systems include beating and uprooting. The absence of the wild-type seed dispersal mechanism is one of the most important domestication syndrome traits.

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