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David A Somers – 1st expert on this subject based on the ideXlab platform
aluminum resistance mechanisms in oat Avena Sativa lPlant and Soil, 2012Co-Authors: Lorien E Radmer, Mesfin Tesfaye, David A Somers, Stephen J Temple, Carroll P Vance, Deborah A SamacAbstract:
Background and aims
Enhanced aluminum (Al) resistance has been observed in dicots over-expressing enzymes involved in organic acid synthesis; however, this approach for improving Al resistance has not been investigated in monocots. Among the cereals, oat (Avena Sativa L.) is considered to be Al resistant, but the basis of resistance is not known.
Transgenic Cereals: Avena Sativa (oat)Molecular improvement of cereal crops, 1999Co-Authors: David A SomersAbstract:
Genetic engineering of allohexaploid oat (Avena Sativa L.) has been substantially improved over the past five years. This chapter documents recent progress made in the molecular improvement of oat. New tissue culture systems have been developed that reduce the labor and time required to produce transgenic plants. These allow a broad range of genotypes, including varieties currently in production, to be genetically engineered. Selectable markers have been identified that reduce the potential for ecological risk upon outcrossing of transgenic plants with wild oat. Some problems with transgene expression are observed which must be resolved before the extant genetic engineering systems become fully useful for oat improvement. Examples of applications of genetic engineering to oat improvement are presented.
Genetic Transformation in Avena Sativa L. (Oat)Biotechnology in Agriculture and Forestry, 1996Co-Authors: David A Somers, H. W. Rines, Kimberly A. Torbert, Wojciech P. Pawlowski, S. K. C. MilachAbstract:
Genetic transformation of cultivated hexaploid oat (Avena Sativa L.) was first reported in 1992 (Somers et al. 1992). Since that time, the oat transformation system has been significantly improved. Current applications of transformation to oat improvement are focused on investigating mechanisms of resistance to barley yellow dwarf virus and fungal pathogens. This chapter reviews the key factors leading to the development of a routine transformation system for oat. The current status of oat transformation will be presented with consideration of selection systems and transgene inheritance in regard to eventual practical applications of transformation to oat improvement.
Syed Noor Ul Abideen – 2nd expert on this subject based on the ideXlab platform
Protein Level and Heavy Metals (Pb, Cr, and Cd) Concentrations in Wheat (Triticum aestivum) and in Oat (Avena Sativa) PlantsInternational Journal of Innovation and Applied Studies, 2013Co-Authors: Syed Noor Ul AbideenAbstract:
The aim of the study was to investigate heavy metal accumulation in wheat (Triticum aestivum) and oat (Avena Sativa), and other physiological and biochemical parameters affected by these heavy metals. The data revealed that maximum plant fresh weight and plant dry weight was recorded for oat and minimum plant fresh weight and plant dry weight was noted for wheat (Triticum aestivum). The data also indicated that higher concentration of proline and DNA concentration was noted in wheat (Triticum aestivum) while lowest in oat (Avena Sativa) plant. While DNA purity was highest in wheat (Triticum aestivum) and found lowest in oat (Avena Sativa). Highest concentration of protein was recorded by wheat (Triticum aestivum) while lowest protein concentration was noted for oat (Avena Sativa). The data further showed that wheat (Triticum aestivum) recorded maximum Cd concentration while minimum Cd concentration was noted in oat (Avena Sativa). Highest concentration of Cr was noted in oat while minimum Cr concentration was recorded by wheat (Triticum aestivum). A maximum level of Pb was shown by oat (Avena Sativa) while minimum levels of Pb were noted in wheat (Triticum aestivum). So oat (Avena Sativa) plant is the higher accumulator of heavy metals i-e Cr and Pb while wheat (Triticum aestivum) accumulates Cd in highest concentrations.
H Kimpelfreund – 3rd expert on this subject based on the ideXlab platform
konkurrenz und ertragsvorteile in gemengen aus erbsen pisum sativum l und hafer Avena Sativa lJournal of Agronomy and Crop Science, 2000Co-Authors: Rolf Rauber, K Schmidtke, H KimpelfreundAbstract:
Competition and yield advantage in mixtures of pea (Pisum sativum L.) and oats (Avena Sativa L.)
In field trials on a fertile fluvisol in 1995 and 1996 near Gottingen, Germany, pea (Pisum sativum; cv. Messire/conventional leafed, cv. Profi/semileafless) and oats (Avena Sativa; cv. Alf) were grown as sole crops and in substitutive mixtures. The sole crops were established at 80 pea seeds m−2 and 300 oat seeds m−2. The mixtures consisted of 67 % (pea) and 33 % (oats) of the monoculture densities, respectively. Interactions of cv. Messire or cv. Profi and oats were similar in 1995 and 1996. The mixtures outyielded the monocultures with respect to total above ground dry matter (RYT = 1.15) and grain yield (RYT = 1.09). Grain yield of pea and oats averaged 4.9 t ha−1 in monocultures and 5.5 t ha−1 in mixtures. Oats was relatively the stronger of the two competitors. Decreasing number of pods per plant could be highlighted as the factor for a lower pea seed frequency in the yield of the mixtures. For oats the number of panicles per plant and kernels per panicle were higher in the mixtures compared with the oat monocultures. The average amount of the harvest index (HI) was 0.52 for pea and 0.46 for oats. Favourable growth conditions increased HI values however, prolific vegetative growth in the mixtures resulted in lower HI values. The predicted RYT-values estimate the maximum combined grain yield of 6.3 t ha−1 in the mixture of 87 % pea (70 seeds m−2) and 13 % oats (39 kernels m−2).