【摘要】 选用１２个不同穗型水稻品种为材料，对供试品种的根系特征与地上部性状关系进行了分析。研究初步表明：种子根特征受种子千粒重影响较大；每株不定根数与每株分维数和穗数呈显著正相关；不定根长度与穗长呈显著正相关；不定根直径与叶片宽度、茎宽、每穗一次枝梗数、每穗二次枝梗数、每穗总粒数呈显著正相关，与每株穗数呈显著负相关；根重与地上部干重的关系也非常密切。不同生育期之间的根数、根重和根直径的相关性均达显著水平。更多还原

【Abstract】 Twelve rice varieties with different panicle types were chosen as the experimental materi-als. The relationship between the characteristics of roots and shoots among the varieties wasanalyzed.The results showed that the Characteristics of radicle were much affected by the seedweight;there was a close positive relationship between the number of nodal roots per plant andthe number of tillers and panicles per plant;the length of nodal root was also related with thelength of panicle;there were close positive reiationships between the diameter of nodal root andthe width of leaf,the diameter of stem,the number of the first rachis-branchs and the sec-ond rachis-branchsi per panicle,the number of spikeletsi per panicle;there was a close nega-tive relationship between the diameter of nodal root and the panicie number per plant;the rootweight was closely related with the shoot weight;the relationships of the numbers of nodalroots, root weights and root diameters in different growth stages were also significant.更多还原