烤烟自育种质GDH88的遗传力及杂种优势分析

Analysis of F₁ Heterosis on Self-breeding Tobacco Germplasm GDH88

摘要: 对烤烟自育种质GDH88 和15 个烤烟品种配制的F₁代部分性状杂种优势的研究表明,在杂交F₁代各农艺性状和叶绿素含量上均有杂种优势出现,特别是在中上部叶长和叶宽性状上杂种优势表现明显。进一步研究表明,F₁代的杂种优势主要来自于自育种质GDH88。不完全双列杂交试验则表明自育种质GDH88 一般配合力较好,表明烤烟自育种质GDH88 是烟草育种中优良的亲本材料。

Abstract: We studied F₁ heterosis of some traits of 15 flue-cured tobacco varieties and self-bred germplasm GDH88. The results showed that both F1 agronomic characters and chlorophyll content appeared heterosis, particularly in the leaf length and width. Further studies showed that F₁ heterosis mainly came from GDH88. Incomplete diallel cross trial indicated that GDH88 had good general combining ability, which demonstrated that GDH88 was excellent parent material for tobacco breeding.