Dioecy,the presence of male and female individual,has evolved independently from hermaphroditism in multiple flowering plant lineages.Spinach,an important leafy vegetable crop worldwide,is a dioecious species with an ...Dioecy,the presence of male and female individual,has evolved independently from hermaphroditism in multiple flowering plant lineages.Spinach,an important leafy vegetable crop worldwide,is a dioecious species with an XY sex-determination system.Although some markers that are fully linked to male-determination locus were identified,the male-specific region(MSR)remained unclear.In this research,five male individuals and five female lines were resequenced to identify the male-specific region.We identified a region(∼21 kb)on chromosome 4(putative sex chromosome)where the five females had a low reads coverage,while the five males had high coverage.A KASP marker,SponR,developed from a single nucleotide polymorphism(SNP)closely linked to the MSR was co-segregating with the sex determination gene in the population of 958 individuals,suggesting that the MSR might be specifically present in male spinach plants.展开更多
系统级动态功耗管理(Dynamic Power Management,DPM)策略根据系统状态和负载,动态地调整系统配置,从而能够有效降低系统功耗。传统的DPM策略仅从设备的角度考察工作负载状况,忽略了工作负载的应用特征。本文从任务的角度分析负载,提出...系统级动态功耗管理(Dynamic Power Management,DPM)策略根据系统状态和负载,动态地调整系统配置,从而能够有效降低系统功耗。传统的DPM策略仅从设备的角度考察工作负载状况,忽略了工作负载的应用特征。本文从任务的角度分析负载,提出新颖的多请求源(Multiple Service Requesters,MSR)系统级功耗管理的模型,以及基于该模型的自适应超时策略(Multiple-Service-Requester-Based Timeout Policy,MSRBTP)。实验表明,与传统DPM策略相比较,在非平稳的应用环境下,MSRBTP策略具有更好更稳定的节能效果。展开更多
基金This work was performed at the Key Laboratory of Biol-ogy and Genetic Improvement of Horticultural Crops,Ministry of Agriculture,Beijing,China,and was supported by the Nat-ural Science Foundation of China(Grant No.31872102)the Chinese Academy of Agricultural Sciences Innovation Project(Grant No.CAAS-ASTIP-IVFCAAS)+2 种基金Beijing Scientific Program of Municipal Commission of Science and Technology(Grant No.Z171100001517014)Central Public-interest Scientific Institution Basal Research Fund(Grant No.IVF-BRF2018004)the National Key Research and Development Program of China(Grant No.2018YFD0100805).
文摘Dioecy,the presence of male and female individual,has evolved independently from hermaphroditism in multiple flowering plant lineages.Spinach,an important leafy vegetable crop worldwide,is a dioecious species with an XY sex-determination system.Although some markers that are fully linked to male-determination locus were identified,the male-specific region(MSR)remained unclear.In this research,five male individuals and five female lines were resequenced to identify the male-specific region.We identified a region(∼21 kb)on chromosome 4(putative sex chromosome)where the five females had a low reads coverage,while the five males had high coverage.A KASP marker,SponR,developed from a single nucleotide polymorphism(SNP)closely linked to the MSR was co-segregating with the sex determination gene in the population of 958 individuals,suggesting that the MSR might be specifically present in male spinach plants.
文摘系统级动态功耗管理(Dynamic Power Management,DPM)策略根据系统状态和负载,动态地调整系统配置,从而能够有效降低系统功耗。传统的DPM策略仅从设备的角度考察工作负载状况,忽略了工作负载的应用特征。本文从任务的角度分析负载,提出新颖的多请求源(Multiple Service Requesters,MSR)系统级功耗管理的模型,以及基于该模型的自适应超时策略(Multiple-Service-Requester-Based Timeout Policy,MSRBTP)。实验表明,与传统DPM策略相比较,在非平稳的应用环境下,MSRBTP策略具有更好更稳定的节能效果。
