Breeding Methodology and Practice of Super Rice in China

来源 :Rice Science | 被引量 : 0次 | 上传用户:ziyutianxia
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
To meet the growing demand for rice production,the Ministry of Agriculture,P.R.China initiated a nationwide project on the development of super rice in 1996.Through efforts in research,super rice breeding in China has gained significant advances in the aspects of breeding theories,creation of breeding materials and selection and promotion of elite rice varieties.A creative super rice breeding path of the construction of harmonious plant type combined with the utilization of heterosis was proposed.Super rice plays more and more important roles in rice production.Totally,71 super rice varieties in China have been successfully developed and released to production.These varieties have 12 t/hm2 yield potential in on-farm demonstration fields,8% to 15% higher than the check varieties with high resistance to pest and medium to high level of grain quality,the total growing area of which has reached 23.7 million hectares,and rice grain production increased by 17.7 million tons from 1996 to 2009.This paper reviewed the development and achievements of super rice breeding in aspects of the breeding methodology and breeding practices,summarized the successful experience of super rice breeding in China and proposed the developmental strategies of super rice for the future. To meet the growing demand for rice production, the Ministry of Agriculture, PRChina initiated a nationwide project on the development of super rice in 1996. Through efforts in research, super rice breeding in China has gained significant advances in the aspects of breeding theories, creation of breeding materials and selection and promotion of elite rice varieties. A creative super rice breeding path of the construction of harmonious plant type combined with the utilization of heterosis was proposed.Super rice plays more and more important roles in rice production .otally, 71 super rice varieties in China have been successfully developed and released to production. These varieties have 12 t / hm2 yield potential in on-farm demonstration fields, 8% to 15% higher than the check varieties with high resistance to pest and medium to high level of grain quality, the total growing area of ​​which has reached 23.7 million hectares, and rice grain production increased by 17.7 million tons from 1996 to 2009 .This paper reviewed the development and achievements of super rice breeding in aspects of the breeding methodology and breeding practices, summarized the successful experience of super rice breeding in China and proposed the developmental strategies of super rice for the future.
其他文献
采用三维时域有限差分法,数值研究了不同几何参数下,三角形金属纳米颗粒的局域表面等离共振特性和传感特性。给出了三角形的高、顶角、顶角曲率半径和间距4个参数对单三角形
基于气体近红外选择性吸收理论和Beer-Lambert定律,研究了硫化氢气体的拉曼散射特性,同时采用宽带光源光谱吸收检测技术对H2S气体进行检测。将自聚焦透镜作为光纤准直透镜和
为了解修枝对幼林大花序桉生长和木材密度的影响,该研究设置未修枝、轻度修枝、中度修枝和重度修枝4种修枝强度处理,对比分析修枝前后的生长和木材密度差异.结果表明:修枝对
在针对同一地区低空间分辨率的多光谱图像与高空间分辨率的全色图像的融合方法中,传统的强度-色调-饱和度(IHS)变换容易出现颜色失真现象,而小波融合虽然能使融合图像在获得高空
俄罗斯科学家开发出用磁化水调制混凝土的新技术,可使制成的水泥板结构粒子更为细密,新生结晶物质的有序性提高,其防水性、防冻性和化学稳定性都明显增强。使用磁化水取代普通水
出国旅游带什么﹃钱﹄好这几年自费出国旅游的人越来越多出国旅游必然要消费这就牵涉到钱的问题那么出国旅游观光带什么钱好呢?人们一般都倾向于选择现钞购买旅行支票
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
当前,无论是社会环境还是学校内部环境,哲学社会科学研究都可以说站在一个快速发展的新的起点上,面临难得的发展机遇和有利的发展条件。深入推进学校哲学社会科学繁荣和发展,
古老的盐业即将面临一场大的变革,如同一辆正常行驶的汽车,将要开始一段陌生的行程,财务要做什么?财务该怎么做?一、做好导航系统这个导航系统就是全面预算管理。预算管理具
夏克-哈特曼波前传感器因其可以同时测量激光的强度及相位信息,已广泛用于激光光束质量检测中。根据实际检测的要求,设计夏克一哈特曼传感器系统的参数是构建检测系统的重要一