【摘要】 运用田间试验和统计分析的方法研究了白花泡桐天然杂种无性系自然接干性状的遗传变异。结果表明:(1)自然接干性状在天然杂种无性系水平上具有广泛而明显的遗传变异性。(2)除通直度性状没有达到显著性差异外,其余的自然接干性状都有极显著性差异。(3)自然接干性状在天然杂种无性系间存在极显著的差异性。(4)接干高和通直度性状的高度变异性在影响白花泡桐天然杂种无性系自然接干性状的总体状况和一般表现上起着至关重要的作用。(5)N1和N11是参试无性系中自然接干性表现最好的2个无性系。(6)估算了一些重要遗传参数。更多还原

【Abstract】 The genetic variation of natural stem-join characters of Paulownia fortunei(Seem.) Hemsl.natural hybrid clones was studied by means of field test and statistical analysis.The results were as follows:(1) The natural stem-join characters had extensive and significant genetic variation at the level of P.fortunei natural hybrid clones.(2) Straightness of stem had no significant difference,but other natural stem-join characters had extremely significant difference.(3) The natural stem-join characters had extremely significant difference in natural hybrid clones.(4) The high genetic variation of height of stem-join and straightness of stem played a vital role in influencing total state and general display of the hybrid clones’ natural stem-join characters.(5) N1 and N11 were the finest clones among all clones tested.(6) Some important genetic parameters were calculated.更多还原