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当前位置: 首页 > 文章 > 籼粳稻及其杂交育成种根系的比较研究 沈阳农业大学学报 1991 (1) 99-105
Position: Home > Articles > Comparative Study on Roots of Indica and Japonica Varieties and Their Hybrids Journal of Shenyang Agricultural University 1991 (1) 99-105

籼粳稻及其杂交育成种根系的比较研究

作  者：
陈健
关键词：
水稻;籼型;粳型;偏籼型;偏粳型;根系
摘  要：
以籼型、粳型、偏籼型、偏籼型的18个水稻品种为主要试材,采用盆栽与田间栽培相结合的方法,初步比较了各类型品种根系的若干形态性状和生理性状间的差异,以及对环境条件反应的差异。结果表明,籼型、偏籼型品种的根干重和根体积分别高于粳、偏粳;籼粳交育成种根数有优势;根活性吸收面积,偏籼>籼,偏粳>粳,并与单株产量密切相关;孕穗期单株伤流强度依次为:偏粳>偏籼>籼>粳;α—萘胺氧化力品种间差异极显著,辽粳5号、密阳23号、青系96、青农早1号属高α—萘胺氧化力型;根系生长与地上部生长和产量之间密切相关,根系本身具有自动调节能力。
译  名：
Comparative Study on Roots of Indica and Japonica Varieties and Their Hybrids
作  者：
Chen Jian (Department of Food-oil,Bureau of Agricultural Stock-breeding)
关键词：
rice;;indica varieties;;japonica vavieties;;indica-cline type;;japonica-cline type;;root system
摘  要：
In this study,differences in morphological physiological-characters of roots of 18 different varieties including indica japonica and their hybrids were determined the following results were achieved:Root dry weight and volumes of indica varieties and indica-cline hybrids were respectively higher than those of japonica varieties and japonica-cline hybrids.Root number of hybrids derived from indica and japonica crossing was increased.Active absorbing area of indica-cline and japonica-cline hybrids were respectively greater than those of indica and japonica varieties,and the relation between active absorbing area and grain yield per plant was signifcant.In booting stage,bleeding sap of japonica-cline hybrids was more than that of indica-cline hybrids which was in turn more than that of indica varieties.and japonica varieties had the least bleeding sap.Differences in α-NA oxidation activity of roots of various varieties were significant.Liaogeng No.5 miyang No.23 Qingxi No96 and Qingnongzao No.1 were high α-NA oxidation activity varieties.Both relations between root growth and shoot growth and between root growth and grain yield were noticeable. Root system itself had self-adjusting function.

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