Next Article in Journal
Genome-Wide Identification and Characterization of Hsf and Hsp Gene Families and Gene Expression Analysis under Heat Stress in Eggplant (Solanum melongema L.)
Previous Article in Journal
Aulacaspis yasumatsui Delivers a Blow to International Cycad Horticulture
Article

Remobilization of Storage Nitrogen in Young Pear Trees Grafted onto Vigorous Rootstocks (Pyrus betulifolia)

1
Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Beijing Engineering Research Center for Deciduous Fruit Trees, Beijing Academy of Forestry and Pomology Sciences, Ministry of Agriculture, Beijing 100093, China
2
Beijing Academy of Forestry and Pomology Sciences, Ministry of Agriculture, Beijing 100093, China
*
Author to whom correspondence should be addressed.
Academic Editor: Francisco Garcia-Sanchez
Horticulturae 2021, 7(6), 148; https://doi.org/10.3390/horticulturae7060148
Received: 28 April 2021 / Revised: 7 June 2021 / Accepted: 8 June 2021 / Published: 10 June 2021
(This article belongs to the Section Plant Nutrition)
The remobilization of storage nitrogen (N) is affected by growth characteristics of young pear trees. Aboveground parts of young pear trees grafted on P. betulifolia grew more vigorously than that on dwarfing rootstocks. Therefore, the remobilization of storage N within young pear trees on vigorous rootstocks may be different from that on dwarfing rootstocks. A 15N tracing experiment, including six groups of one-year-old pear trees grafted on vigorous rootstocks in 2016, was conducted to investigate the mobilization of storage N from 2016 to 2018. Results indicated that about 44%, 31.4% and 24.6% of storage N remobilized in new growth was derived from the trunk, shoots and roots, respectively. Most of storage N remobilized in new organs were supplied by trunks and shoots. About 82.2% of storage N withdrawn from senescent leaves were recovered in the trunk and shoots during autumn. The aboveground parts played a more important role than roots in the cycling process of storage N in young pear trees. However, as compared with young pear trees on dwarfing rootstocks, more storage N recovered in new organs were supplied by roots of that on vigorous rootstocks, due to vigorous growth and more nutrient requirement of aboveground parts. View Full-Text
Keywords: labelled nitrogen; nitrogen derived from fertilizer; nitrogen concentration; new organs; perennial structures labelled nitrogen; nitrogen derived from fertilizer; nitrogen concentration; new organs; perennial structures
Show Figures

Figure 1

MDPI and ACS Style

Wu, Y.; Sun, M.; Qi, Y.; Liu, S. Remobilization of Storage Nitrogen in Young Pear Trees Grafted onto Vigorous Rootstocks (Pyrus betulifolia). Horticulturae 2021, 7, 148. https://doi.org/10.3390/horticulturae7060148

AMA Style

Wu Y, Sun M, Qi Y, Liu S. Remobilization of Storage Nitrogen in Young Pear Trees Grafted onto Vigorous Rootstocks (Pyrus betulifolia). Horticulturae. 2021; 7(6):148. https://doi.org/10.3390/horticulturae7060148

Chicago/Turabian Style

Wu, Yang; Sun, Mingde; Qi, Yuanyong; Liu, Songzhong. 2021. "Remobilization of Storage Nitrogen in Young Pear Trees Grafted onto Vigorous Rootstocks (Pyrus betulifolia)" Horticulturae 7, no. 6: 148. https://doi.org/10.3390/horticulturae7060148

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop