不同杂交型楸树子代嫁接苗生长性状分析  

Analysis of Growth Traits of Grafted Seedlings of Different Hybrid Catalpa Tree Offspring

作　　者：汪小溪 贾德胜 李泽秀 王云瑶 翟文继 Wang Xiaoxi;Jia Desheng;Li Zexiu;Wang Yunyao;Zhai Wenji(Nanyang Nature Reserve and Wildlife Conservation Center,Henan Nanyang 473000,China;State owned Huangshi'an Forest Farm in Nanyang City,Henan Nanyang 473000,China;Nanyang Forestry Research Institute,Henan Nanyang 473000,China)

机构地区：[1]南阳市自然保护地和野生动植物保护中心,河南南阳473000 [2]国有南阳市黄石庵林场,河南南阳473000 [3]南阳市林业科学研究院,河南南阳473000

出　　处：《河南林业科技》2024年第2期1-3,共3页Journal of Henan Forestry Science and Technology

基　　金：“十四五”国家科技支撑课题北方珍贵林木新品种选育子课题:楸树种质创新与新品种选育(2021YFD2200301-1)。

摘　　要：以中部地区楸树为杂交试验材料,研究杂交楸树子代生长性状的差异。结果表明:2022年7月筛选出5种杂交型共16个无性系,其子代嫁接苗成活率高达96.88%,杂种后代苗木遗传了其亲本的优良性状;不同杂交楸树子代苗木生长量均有显著变化,其中楸×楸子代苗木胸径值最高,为5.59 cm,极显著高于滇楸和灰楸×滇楸子代苗(P<0.01);楸×灰楸子代苗木树高最高,为3.4 m,极显著高于滇楸(P<0.01),显著高于灰楸×滇楸子代苗(P<0.05)。研究认为:从发掘楸树育种的潜力来看,楸×灰楸是最具发展育种潜力的一个杂交类型,适宜在豫南平原区等地推广应用。Using theChinesecatalpatreesin the central region as hybrid experimental materials,this study investigates the differences in growth traits among the offspring of hybrid Chinesecatalpatrees.The results showed that in J uly 2022,5 hybrid types of 16 clones were selected,and the survival rate of their offspring grafted seedlings was as high as 96.88%.The hybrid offspring seedlings inherited the excellent traits of their parents;There were significant changes in the growth of offspring seedlings of different hybrid Chinesecatalpatrees.Among them,the diameter at breast height of the offspring seedlings of Chinesecatalpa×Chinesecatalpawas the highest,at 5.59 cm,which was significantly higher than that of Yunnancatalpa and Chinesecatalpa×Chinesecatalpa(P<0.01).The height of the hybrid offspring seedlings of Chinesecatalpa×Chinesecatalpawas the highest,at 3.4m,which was significantly higher than that of Yunnancatalpa(P<0.01)and significantly higher than that of Chinesecatalpa×Chinese catalpa(P<0.05).Research suggests that from the perspective of exploring the potential of Chinesecatalpa treebreeding,Chinesecatalpa×graycatalpais the most promising hybrid types for breeding development,suitable for promotion and application in the southern Henan plain and other areas.

关 键 词：楸树 杂交方式 嫁接 生长性状 

分 类 号：S792.99[农业科学—林木遗传育种]