《植物生理学报》 2010, 46(5): 431-434

超绿水稻品种(系) ‘ 沈农19-6’ 根系的生长和生理特性初探

隋阳辉, 赵明辉*, 阚学飞, 徐海, 陈温福*

沈阳农业大学水稻研究所, 省部共建北方粳稻遗传育种重点实验室, 农业部作物生理生态遗传育种重点开放实验室, 沈阳110866

通信作者：赵明辉；E-mail: wfchen5512@yahoo.com.cn, mhzhao@syau.edu.cn；Tel: 024-88487186, 024-88487184

摘　要：

采用盆栽方法, 研究不同生育时期超绿水稻品种(系)‘ 沈农 19-6’ 根系的生长和生理特性。结果表明, 生育后期品种 (系)‘ 沈农 19-6’ 的最大根长、根体积、根干重和根冠比显著或极显著大于 ‘ 沈农 07-015’ 和 ‘ 丰锦 ’; 根系氧化能力(α -萘胺 氧化量)和根系还原能力均高于 ‘ 沈农 07-015’ 和 ‘ 丰锦 ’。上述指标在整个生育期内的变化趋势与 ‘ 沈农 07-015’ 和 ‘ 丰锦 ’ 基本上一致, 但在生育后期其根系衰老速度缓慢, 根系活力高。

关键词：超绿水稻; 根系形态; 根系活力

收稿：2010-01-04   修定：2010-03-01

资助：公益性行业(农业)科研专项经费项目(nyhyzx07-001)、辽宁省科学技术计划重大项目(2008201002)和国家“ 十一五” 科技支撑计划(2006BAD01A01-6)。

Preliminary Study on Growth and Physiological Characteristics of Super-Green Rice Root

SUI Yang-Hui, ZHAO Ming-Hui*, KAN Xue-Fei, XU Hai, CHEN Wen-FU*

Key Laboratory of Crop Physiology, Ecology, Genetics and Breeding, Ministry of Agriculture, Key Laboratory of Northern Japonica Rice Genetics and Breeding Cooperated by Education Ministry and Liaoning Province, Rice Institute, Shenyang Agricultural University, Shenyang 110866, China

Corresponding author: ZHAO Ming-Hui; E-mail: wfchen5512@yahoo.com.cn, mhzhao@syau.edu.cn; Tel: 024-88487186, 024-88487184

Abstract:

Root morphology and physiology characters in different growth stages of super-green rice ‘Shennong 19-6’ were studied by using the method of potted planting. The results showed that root max-length, root volume, root dry weight and root/shoot ratio were significantly higher in super-green rice ‘Shennong 19-6’ than in ‘Shennong 07-015’ and ‘Fengjin’, especially at late growth stage. Both oxidative and reductive activity of root were higher in ‘Shennong 19-6’ than in ‘Shennong 07-015’ and ‘Fengjin’ at late growth stage. These root physiological parameters had similar trends in ‘Shennong 19-6’, ‘Shennong 07-015’ and ‘Fengjin’. However, the super-green rice ‘Shennong 19-6’ had slower root aging speed and higher root vigor than in ‘Shennong 07-015’ and ‘Fengjin’ at later period of growth.

Key words: super-green rice; root morphology; root vigor