高血压是心脑血管疾病发生的重要危险因素。研究表明原发性高血压的发生与吸烟、嗜酒、饮食、超重、遗传等因素有关,但与应激 A 型性格、情绪等心理因素的关系尚有争议近年来国外开展了社会心理因素与正常人群血压关系的研究,而国内这...高血压是心脑血管疾病发生的重要危险因素。研究表明原发性高血压的发生与吸烟、嗜酒、饮食、超重、遗传等因素有关,但与应激 A 型性格、情绪等心理因素的关系尚有争议近年来国外开展了社会心理因素与正常人群血压关系的研究,而国内这方面的系统报道甚少。为此,我们以济南市历城区537名高中生为研究对象,探讨环境。展开更多
[Objective] The experiment aimed to study the relation between yield components and yield per plant of double-low hybrid rapeseed and provide reference for breaking yield limitation of rapeseed and culturing new doubl...[Objective] The experiment aimed to study the relation between yield components and yield per plant of double-low hybrid rapeseed and provide reference for breaking yield limitation of rapeseed and culturing new double-low hybrid rapeseed variety. [Method]The yield components and yield per plant of two cross combination of double-low hybrid rapeseed (B02, D04) and Shuza 6 were correlatively analyzed and compared, besides, the path analysis was also carried on to them. [Result] Among B02, D04 and Shuza No.6, effective pod number per plant and seeds per silique, seeds per pod and 1 000-grain weight were all negative correlation. In high yield hybrid, pod number per plant, seeds per pod had more impaction on yield per plant than 1 000-grain weight and the difference was at 0.01 significant level. In the control variety Shuza No.6, the impactions of pod number per plant and seeds per pod on yield per plant were bigger than that of 1 000-grain weight on yield per plant, however, the difference was not significant. [Conclusion] The improvement of effective pod number per plant was an important aim of breeding work of double low rapeseed breeding in Sichuan ecological region.展开更多
文摘高血压是心脑血管疾病发生的重要危险因素。研究表明原发性高血压的发生与吸烟、嗜酒、饮食、超重、遗传等因素有关,但与应激 A 型性格、情绪等心理因素的关系尚有争议近年来国外开展了社会心理因素与正常人群血压关系的研究,而国内这方面的系统报道甚少。为此,我们以济南市历城区537名高中生为研究对象,探讨环境。
基金Supported by Key Germplasm Project of Sichuan Province during the Eleventh Five-year Plan(2006YZGG-23)~~
文摘[Objective] The experiment aimed to study the relation between yield components and yield per plant of double-low hybrid rapeseed and provide reference for breaking yield limitation of rapeseed and culturing new double-low hybrid rapeseed variety. [Method]The yield components and yield per plant of two cross combination of double-low hybrid rapeseed (B02, D04) and Shuza 6 were correlatively analyzed and compared, besides, the path analysis was also carried on to them. [Result] Among B02, D04 and Shuza No.6, effective pod number per plant and seeds per silique, seeds per pod and 1 000-grain weight were all negative correlation. In high yield hybrid, pod number per plant, seeds per pod had more impaction on yield per plant than 1 000-grain weight and the difference was at 0.01 significant level. In the control variety Shuza No.6, the impactions of pod number per plant and seeds per pod on yield per plant were bigger than that of 1 000-grain weight on yield per plant, however, the difference was not significant. [Conclusion] The improvement of effective pod number per plant was an important aim of breeding work of double low rapeseed breeding in Sichuan ecological region.
