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研究了福建30个甘薯杂交品种9个数量性状的遗传变异,除蔓粗外各性状的遗传变异系数均较大(达20％以上),都具有较高的育种选择潜力,并测定和分析遗传力与表型选择的关系,通过遗传相关、逐步回归和遗传通径分析,初步提出了福建省甘薯杂交品种高产优良基因型的表现是:单株分枝和单株结薯数较多,茎叶生长适量,绿叶重较高而不过量,蔓粗细和蔓长短,以及节间长度中等。
The genetic variation of 9 quantitative traits in 30 sweet potato hybrids in Fujian was studied. The genetic variation coefficients of all traits except for vine were large (up to 20%), which all had high potential for breeding selection and the genetic analysis Through the genetic correlation, stepwise regression and genetic path analysis, we initially proposed that the high yield and good genotypes of sweet potato hybrids in Fujian Province are as follows: The amount of leaf growth, green leaves without excessive, heavy weight, vine length and length, and internode length.