To develop and characterize introgression lines for leaf and neck blast resistance, 326 introgression lines were developed using various accessions of six different AA genome wild species in the genetic background of ...To develop and characterize introgression lines for leaf and neck blast resistance, 326 introgression lines were developed using various accessions of six different AA genome wild species in the genetic background of elite Indian varieties like PRl14 and Pusa 44 and were screened for blast resistance. Stringent phenotyping coupled with genotyping using gene based markers led to the identification of four resistant introgression lines, which showed promising resistance and do not possess any of the tested genes. Furthermore, multi-location screening confirmed the field resistance of the four introgression lines to both leaf and neck blast. Molecular characterization of these introgression lines using genome-wide simple sequence repeat markers revealed the presence of small percentage of wild Oryza genome introgrssion. So these lines can be used for mapping and identification of novel leaf and neck blast resistance genes. Thus, these four introgression lines can be considered as new genetic resources for blast resistance.展开更多
This paper is devoted to the analysis of the heat transfer and Navier’s slip effects in a non-Newtonian Jeffrey fluid flowing past a stretching/shrinking sheet.The nanoparticles,namely,Cu and Al_(2)O_(3)are used with...This paper is devoted to the analysis of the heat transfer and Navier’s slip effects in a non-Newtonian Jeffrey fluid flowing past a stretching/shrinking sheet.The nanoparticles,namely,Cu and Al_(2)O_(3)are used with a water-based fluid with Prandtl number 6.272.Velocity slip flow is assumed to occur when the characteristic size of the flow system is small or the flow pressure is very small.By using the similarity transformations,the governing nonlinear PDEs are turned into ordinary differential equations(ODE’s).Analytical results are presented and analyzed for various values of physical parameters:Prandtl number,Radiation parameter,stretching/shrinking parameter and mass transpiration for the flow and heat transfer.The considered problem is relevant to various physical applications in the field of engineering,e.g.,the production of certain materials,the preparation of plastic and rubber sheets and glass blowing.It is shown that the considered nanofluid increases the thermal efficiency.The nanoparticles act as a heater by increasing the solid volume fraction and thermal radiation.Vice versa,they can act as a cooler if the strength of magnetic field is increased.The flow strength decreases by increasing the values of Deborah number.展开更多
文摘To develop and characterize introgression lines for leaf and neck blast resistance, 326 introgression lines were developed using various accessions of six different AA genome wild species in the genetic background of elite Indian varieties like PRl14 and Pusa 44 and were screened for blast resistance. Stringent phenotyping coupled with genotyping using gene based markers led to the identification of four resistant introgression lines, which showed promising resistance and do not possess any of the tested genes. Furthermore, multi-location screening confirmed the field resistance of the four introgression lines to both leaf and neck blast. Molecular characterization of these introgression lines using genome-wide simple sequence repeat markers revealed the presence of small percentage of wild Oryza genome introgrssion. So these lines can be used for mapping and identification of novel leaf and neck blast resistance genes. Thus, these four introgression lines can be considered as new genetic resources for blast resistance.
文摘This paper is devoted to the analysis of the heat transfer and Navier’s slip effects in a non-Newtonian Jeffrey fluid flowing past a stretching/shrinking sheet.The nanoparticles,namely,Cu and Al_(2)O_(3)are used with a water-based fluid with Prandtl number 6.272.Velocity slip flow is assumed to occur when the characteristic size of the flow system is small or the flow pressure is very small.By using the similarity transformations,the governing nonlinear PDEs are turned into ordinary differential equations(ODE’s).Analytical results are presented and analyzed for various values of physical parameters:Prandtl number,Radiation parameter,stretching/shrinking parameter and mass transpiration for the flow and heat transfer.The considered problem is relevant to various physical applications in the field of engineering,e.g.,the production of certain materials,the preparation of plastic and rubber sheets and glass blowing.It is shown that the considered nanofluid increases the thermal efficiency.The nanoparticles act as a heater by increasing the solid volume fraction and thermal radiation.Vice versa,they can act as a cooler if the strength of magnetic field is increased.The flow strength decreases by increasing the values of Deborah number.
