Using the Chinese catalpa trees in the central region as hybrid experimental materials,this study investigates the differences in growth traits among the offspring of hybrid Chinese catalpa trees.The results showed that in July 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 Chinese catalpa trees.Among them,the diameter at breast height of the offspring seedlings of Chinese catalpa×Chinese catalpa was the highest,at 5.59 cm,which was significantly higher than that of Yunnan catalpa and Chinese catalpa×Chinese catalpa(P<0.01).The height of the hybrid offspring seedlings of Chinese catalpa×Chinese catalpa was the highest,at 3.4m,which was significantly higher than that of Yunnan catalpa(P<0.01)and significantly higher than that of Chinese catalpa×Chinese catalpa(P<0.05).Research suggests that from the perspective of exploring the potential of Chinese catalpa tree breeding,Chinese catalpa×gray catalpa is 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
Key words
Chinese catalpa tree/Hybridization method/Grafting/Growth traits
维普
万方数据