ISHS Acta Horticulturae 772: XXVII International Horticultural Congress - IHC2006: International Symposium on Enhancing Economic and Environmental Sustainability of Fruit Production in a Global Economy
ROOT LIFESPAN AND ROOT RESPIRATION OF FRUIT TREE SPECIES |
| Authors: | J.H. Zhang, J.Y. Wang, Y.L. Hu, Y.Sh. Wang, Sh.H. Zhu, Zh.Q. Mao |
| Keywords: | Cerasus serrulata G. Don, Prunus davidiana Franch, Juglans regia L., Ziziphus jujuba var. spinosa (Bge.) Hu ex H.F. Chow, Malus hupehensis Rehd. |
| DOI: | 10.17660/ActaHortic.2008.772.42 |
| Abstract:
The aims of this research were to determine the relationship between root lifespan and respiration rate 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.). The results showed that the root lifespan was negatively correlated with root respiration rate. The root lifespan of Z. jujuba var. spinosa (Bge.) Hu ex H.F. Chow was 40 days, which is the longest among the five fruit tree species, being 3.3 to 4.0 times greater compared with that of C. serrulata G. Don, of 12 days, and P. davidiana Franch, of 10 days, respectively. The respiration rate of white root ranged from 0.126 to 0.311 μmol O2 g-1•min-1 and was higher than that of woody roots. However, woody root of Z. jujuba var. spinosa (Bge.) Hu ex H. F. Chow showed higher respiration rate than white root. | |
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