火炬松种子园建园初期繁育性状分析  

Analysis on breeding characters of Pinus taeda in early stage of seed orchard

作　　者：黄鹏艳 谢俊康 冯源恒[2,3,4] 唐艳梅 赵苑钧 蒋吉葵 俸苏春 蒋华 杨章旗 HUANG Pengyan;XIE Junkang;FENG Yuanheng;TANG Yanmei;ZHAO Yuanjun;JIANG Jikui;FENG Suchun;JIANG Hua;YANG Zhangqi(Xianshui Forest Farm of Quanzhou,Quanzhou 541511,Guangxi,China;Guangxi Forestry Research Institute,Nanning 530002,Guangxi,China;Masson Pine Engineering Technology Research Center,National Forestry and Grassland Administration,Nanning 530002,Guangxi,China;Guangxi Masson Pine Engineering Technology Research Center,Nanning 530002,Guangxi,China)

机构地区：[1]全州县咸水林场,广西全州541511 [2]广西壮族自治区林业科学研究院,广西南宁530002 [3]国家林业和草原局马尾松工程技术研究中心,广西南宁530002 [4]广西马尾松工程技术研究中心,广西南宁530002

出　　处：《湖南林业科技》2024年第6期7-12,共6页Hunan Forestry Science & Technology

基　　金：广西科技基地和人才专项(桂AD19254004)。

摘　　要：本研究对全州县咸水林场火炬松高产脂种子园开展花量调查,分析建园无性系的繁殖资源配置情况,以期为种子园投产时间判断及交配系统管理提供参考依据。结果表明:已有70%的无性系进入繁殖期,火炬松对雄性繁殖资源的投入超过雌性繁殖资源,雌、雄球花发育数量存在正相关关系。已开花的无性系中,繁殖资源配置偏雄、偏雌的无性系占比分别为20.41%、30.61%,种子园中存在2个繁殖资源配置极度偏雄的无性系及1个繁殖资源配置极度偏雌的无性系,并存在2个繁殖优势无性系。此外,个别无性系可通过单枝或整体偏向发育更多的雄、雌球花来提高雄性、雌性繁育能力。该种子园在建园早期存在明显的雄性、雌性繁殖优势无性系,此繁育特征对该种子园早期的交配系统具有重要影响。In this study,the quantity of flowers of Pinus taeda seed orchard with high resin yield in Xianshui forestry farm in Quanzhou County was investigated,and the distribution of reproductive resources of the clones in the orchard was analyzed,which provided a reference for the judgment of the start-up time and the management of the mating system of the seed orchard.The results showed that 70%of clones had entered the breeding period,and the male reproductive resources of Pinus taeda were more than the female reproductive resources.There was a positive correlation between the number of development of male and female cones.Among the flowering clones,the proportion of clones with male and female reproductive resource allocation was 20.41%and 30.61%,respectively.There were two asexual lines with extremely male reproductive resource allocation and one asexual line with extremely female reproductive resource allocation in the seed orchard,as well as two reproductive advantage asexual lines.In addition,the reproductive capacity of male and female can be improved by the development of more male and female bulbs in individual branch or as a whole.In the early stage of the seed orchard,there were obvious male and female reproductive dominant clones,which had important effects on the mating system of the seed orchard.

关 键 词：火炬松 种子园 花量 繁育性状 繁殖策略 

分 类 号：S722.83[农业科学—林木遗传育种]