不同水分条件下水稻根解剖结构比较分析.pdfVIP

2006, 12( 3) : 346- 351 Pla t Nutritio a d Fertilizer Scie ce 封 克, 司江英, 汪晓丽, 盛海君 ( , 225009) : , 5 ( Oryza s ativ a L.) ( ) , , 5 , , ; , , , , : ; ; : S511062 : A : 1008-505X( 2006) 03-0346- 06 Comparative analysis on rice root anatomical structure under different soil moisture FENG Ke, SI Jia gyi g, WANG Xiaoli, SHENG Hai ju (Jiangsu Prov uncial K ey L aboratory of Crop Genetics and Physiology , Yangzhou Univ , Yangzhou, Jiangsu 225009, China) Abstract: The differe tiae of root a atomical structures of five differe t rice ge otypes ( co ve tio al I dica, hybrid I di ca, co ve tio al Japo ica, hybrid Japo ica, upla d rice) were studied u der i u datory a d aerobic co ditio s. Results showed that there existed ge otype differe ce o the effects of soil moisture o aere chyma formatio a d sclere chyma tous cell shape of rice roots amo g differe t cultivars. U der i u datory co ditio aere chyma i hybrid japo ica root occurred latest withi these five ge otypes. Cortex sclere chymatous cells i co ve tio al i dica root were obviously dif fere t from those i co ve tio al japo ica root i terms of morphological traits. These cells i co ve tio al japo ica root arrayed tightly a d cell walls lig ified to a great exte t. Whereas those i co ve tio al i dica root formed loosely a d cell walls lig ified less. U der aerobic co ditio , the formatio of root aere chyma of upla d rice was the latest amo g five rice ge otypes. A d cortex sclere chymatous cells i co ve tio al japo ica root arra ged loosely. Compared with i u da tory co ditio , aerobic co ditio retarded the formatio of aere chyma of hybrid rice roots a d made the cortex scle re chymatous cells array loosely i co ve tio al japo ica root. Keywords: rice; root a atomical structure; soil moisture