ROOT LIFESPAN OF FIVE FRUIT TREE SPECIES CORRELATE WITH THEIR RESPIRATION INTENSITY
WANG Jia-yan1,HU Yan-li1,WANG Yan-shu1,ZHANG Jiang-hong2,ZHU Shu-hua1, MAO Zhi-quan1 (1.College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018,China;2.College of Horticulture,Hebei Agricultural University,Baoding 071000,China)
The correlation of root lifespan of five fruit tree species ( Cerasus.serrulata.G.Don, Prunus. Davidiana Franch , Juglans. regia L, ZiZiphus. Jujuba var.spinosa(Bge.)Hu ex H.F.Chow , Malus.hupehensis.Rehd)with their respiration intensity were determined in this study.The results showed that the lifespan of ZiZiphus. Jujuba var.spinosa(Bge.)Hu ex H.F.Chow was 40 days which is the loogest among the five tree species and 3.3～4.0time as compared with that of Cerasus.serrulata.G.Don, and Prunus. Davidiana Franch.12 days and 10 days respectively. On the contrary,the respiration intensity of white roots of Cerasus .serrulata.G.Don [ 0.311 O 2,μmol/ ( g·min)]was higher as compared with that of ZiZiphus. Jujuba var.spinosa(Bge.)Hu ex H.F.Chow [0.126 O 2,μmol/ (g·min)].The respiration intensity of white root was higher than that of woody roots with the exception of ZiZiphus. Jujuba var.spinosa(Bge.)Hu ex H.F.Chow.The root lifespan was negatively correlated with respiration intensity of root (R2=0.8249).
【CateGory Index】： S66-33