Abstract： Synthetic wheats are the product of the cross between Triticum turgidum L. var. durum and T. tauschii. The 7＇. tauschii has shown excellent resistance to diseases, salinity, and drought, However, these syn...Abstract： Synthetic wheats are the product of the cross between Triticum turgidum L. var. durum and T. tauschii. The 7＇. tauschii has shown excellent resistance to diseases, salinity, and drought, However, these synthetic wheats are also carriers of genes that produce varying degrees of necrosis, which is expressed as death of tissues in the hybrids （F l） generated from crosses with other bread wheats Necrotic incompatibility is a gradual premature leaf death in certain bread wheat F1 plants and it is caused by the interaction of two genes Nel and Ne2. In this paper 40 hybridizations with T. tauschii in the genetic constitution of some of the two parents made in 2006 and 2007 are presented, and their respective F1 planted at the CEI Barrow （Chacra Experimental de Barrow）. The plants that showed necrotic incompatibility had less growth than the normal F1 at tillering. Symptoms appeared at the beginning of tillering, remaining in that state and till jointing but they never headed. Out of the 16 Argentinean commercial cultivars evaluated, seven had the Ne allele in its genetic constitution and therefore showed necrotic incompatibility, whereas nine of them did not have the NE allele and their F 1 developed normally.展开更多
This paper reports on seven years of collaborative research with the Department for Education and Child Development. The longitudinal study examines the impact ofa multilingual literacy approach as it has been applied...This paper reports on seven years of collaborative research with the Department for Education and Child Development. The longitudinal study examines the impact ofa multilingual literacy approach as it has been applied in the teaching of French, German, Indonesian, Italian, Japanese, and Spanish across 12 different schools in South Australia. The move to introduce the study of additional languages in Australian primary schools has yet to establish wide-ranging and on-going student engagement and often fails to progress students beyond simple pragmatic language use. It is argued that a new approach integrates languages in daily classroom literacy practices can redress this situation： a multilingual literacy approach. The theoretical framework that drives this approach draws from the notions of universality and transfer that are established in the literature. A critical realist paradigm provided a framework for integrating research methods： employing contingency theory and pragmatic methods of philosophy also ensured that values and hermeneutics were not sidelined in the explanation of the study＇s acts and outcomes. This longitudinal study demonstrates that when the aforementioned theoretical notions bridge the research-practice divide and are adopted into daily classroom teaching and learning activities, there is a qualitative and quantitative improvement in students＇ literacy learning展开更多
文摘Abstract： Synthetic wheats are the product of the cross between Triticum turgidum L. var. durum and T. tauschii. The 7＇. tauschii has shown excellent resistance to diseases, salinity, and drought, However, these synthetic wheats are also carriers of genes that produce varying degrees of necrosis, which is expressed as death of tissues in the hybrids （F l） generated from crosses with other bread wheats Necrotic incompatibility is a gradual premature leaf death in certain bread wheat F1 plants and it is caused by the interaction of two genes Nel and Ne2. In this paper 40 hybridizations with T. tauschii in the genetic constitution of some of the two parents made in 2006 and 2007 are presented, and their respective F1 planted at the CEI Barrow （Chacra Experimental de Barrow）. The plants that showed necrotic incompatibility had less growth than the normal F1 at tillering. Symptoms appeared at the beginning of tillering, remaining in that state and till jointing but they never headed. Out of the 16 Argentinean commercial cultivars evaluated, seven had the Ne allele in its genetic constitution and therefore showed necrotic incompatibility, whereas nine of them did not have the NE allele and their F 1 developed normally.
文摘This paper reports on seven years of collaborative research with the Department for Education and Child Development. The longitudinal study examines the impact ofa multilingual literacy approach as it has been applied in the teaching of French, German, Indonesian, Italian, Japanese, and Spanish across 12 different schools in South Australia. The move to introduce the study of additional languages in Australian primary schools has yet to establish wide-ranging and on-going student engagement and often fails to progress students beyond simple pragmatic language use. It is argued that a new approach integrates languages in daily classroom literacy practices can redress this situation： a multilingual literacy approach. The theoretical framework that drives this approach draws from the notions of universality and transfer that are established in the literature. A critical realist paradigm provided a framework for integrating research methods： employing contingency theory and pragmatic methods of philosophy also ensured that values and hermeneutics were not sidelined in the explanation of the study＇s acts and outcomes. This longitudinal study demonstrates that when the aforementioned theoretical notions bridge the research-practice divide and are adopted into daily classroom teaching and learning activities, there is a qualitative and quantitative improvement in students＇ literacy learning
