楸树与滇楸种间杂交的初步研究  

Interspecific Hybridization of Catalpa bungei and Catalpa fargesii f. duclouxii

作　　者：贾继文[1,2] 王军辉[1] 张金凤[2] 张守攻[1] 张建国[1] 赵鲲 

机构地区：[1]中国林业科学研究院林业研究所,国家林业局林木培育重点实验室,北京100091 [2]北京林业大学林木育种国家工程实验室,教育部林木花卉遗传育种重点实验室,北京100083 [3]河南省洛阳市林业科学研究所,河南洛阳471002

出　　处：《林业科学研究》2010年第3期382-386,共5页Forest Research

基　　金：“十一五”国家科技支撑计划课题(2006BAD24B08,2006BAD01A1602);国家林业局林木培育实验室基金项目(2005-03)

摘　　要：采用常规杂交方法,开展楸树与滇楸种间杂交育种,对结实率、果实性状、千粒质量、有胚率、发芽性状及1年生株高、胸径等数据进行统计分析。结果表明:父本对结实率的影响不显著,母本对结实率影响显著;父本对果实性状的影响均不显著,母本对果实长度的影响显著;父母本对千粒质量的影响均不显著;父母本对有胚率、发芽势、发芽率的影响显著或极显著。不同杂交组合间株高和胸径存在极显著差异,杂交组合8-12×滇3表现最好,其株高为2.09 m,胸径达到1.38 cm,杂交组合8-13×滇2和5-8×滇2表现也较好,依据株高、胸径进行苗期早期选择的潜力较大;表现最差的组合是8-14×滇2,株高1.69 m,胸径1.00 cm。The interspecific hybridization between Catalpa bungei C.A.Mey.and Catalpa fargesii Bur.f.duclouxii（Dode） Gilmour was undertaken using conventional pollination approaches.The percentage of fruit set,fruit traits,thousand-grain seeds weight,the percentage of seeds with embryo,germination traits of seeds,and the height and diameter at breast height（DBH） of the annual hybrid seedlings were all investigated and analyzed.The results showed that there was no significant differences in the percentage of fruit set among male parents,but significant differences existed among female parents;concerning fruit traits,no significant differences existed among male parents,only the length of fruit showed significant differences among female parents;there was no significant differences in seeds thousand-grain weight among male and female parents;the percentage of seeds with embryo,germination energy,germination rate were all showed significant or extremely significant differences among male and female parents.The height and DBH were extremely significant differences among mating combinations,for the best mating combination the tree height was 2.09 m,the DBH 1.38 cm,The potential of early selecting based on height and DBH of annual hybrid seedlings would be great.For the poorest mating combinations,the tree height was 1.69 m,the DBH 1.00 cm.

关 键 词：楸树 滇楸 种间杂交 育种 

分 类 号：S722.3[农业科学—林木遗传育种]