Pakistan Science Abstracts
Article details & metrics
No Detail Found!!
The Optimal Temperature for the Growth of Blueberry (Vaccinium corymbosum L.).
Author(s):
1. YUNPU ZHENG: School of Water Conservancy and Hydropower, Hebei University of Engineering, Handan 056038, China; Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences,11A Datun Road, Beijing 100101, China
2. RENQIANG LI: Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences,11A Datun Road, Beijing 100101,China
3. YAOQING SUN: School of Forestry, Xinyang Agriculture and Forestry University,Xinyang 464000,China
4. MING XU: Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences,11A Datun Road, Beijing 100101, China: Center for Remote Sensing and Spatial Analysis, Department of Ecology, Evolution and Natural Resources, Rutgers University, 14 College Farm Road, New Brunswick, NJ 08901, USA
5. HAO ZHANG: School of Life Science and Engineering, Handan University,Handan 056005,China
6. LEI HUANG: Institute of New Energy and Low-carbon Technology, Sichuan University,Chengdu 610065,China
7. YU ZHU: Institute of New Energy and Low-carbon Technology, Sichuan University,Chengdu 610065,China
8. HEXIN WANG: Institute of Modern Agricultural Research, Dalian University,Dalian 116622,China
9. GENZHU LI: Institute of Modern Agricultural Research, Dalian University,Dalian 116622,China
10. LIANG LIU: School of Water Conservancy and Hydropower, Hebei University of Engineering,Handan 056038,China
11. FEI LI: School of Water Conservancy and Hydropower, Hebei University of Engineering,Handan 056038,China
12. LILI GUO: School of Water Conservancy and Hydropower, Hebei University of Engineering,Handan 056038,China
13. XIXI ZHANG: School of Water Conservancy and Hydropower, Hebei University of Engineering,Handan 056038,China
Abstract:
Blueberry (Vaccinium corymbosum L.), a perennial evergreen or deciduous shrub, has recently been introduced into Southern China, where the subtropical climate is hot and humid in summer. Identifying the optimal growth temperatures and understanding the mechanisms of thermal stress on blueberry are not only critical to determining suitably growing areas in Southern China, but also significantly important for selecting and breeding new heat tolerance blueberry cultivars for adapting to subtropical climates. In this study, we examined the optimal temperature for the growth of six blueberry cultivars ('Bluecrop', 'Duke', 'Brigitta', 'Gulfcoast', 'O'Neal', and 'Blue Ridge') with four growth chambers where the temperatures were controlled at 25, 30, 35, and 40?, respectively. We found that initial increase in temperature dramatically enhanced the growth of four cultivars ('Bluecrop', 'Duke', 'Brigitta', and 'Blue ridge') through the warming effect, whereas this warming effect was substantially compromised with further increase in growth temperature, demonstrating an optimal temperature of 32.6, 30.4, 31.8, and 29.0? for the four cultivars respectively. By contrast, the aboveground, belowground, and total biomass of 'Gulfcoast' and 'O'Neal' were linearly declined with growth temperatures, indicating that elevating temperature above 25? had negative effects on blueberry growth. Meanwhile, we also found that the leaf photosynthesis, stomatal conductance, and transpiration of the six blueberry cultivars shared similar trends as plant growth in response to temperatures, suggested that leaf biochemical and photochemical processes affecting the optimal growth temperature of blueberry plants. Moreover, the temperature effects on blueberry growth was also attributed to the changes in the leaf number, leaf length and width, leaf biomass, as well as the leaf stomatal traits including density, openness, and spatial distribution pattern of stomata. In addition, high temperatures exceeding the optima also affected chloroplast structures through damaging grana lamella and stromal lamella as well as breaking chloroplast envelope. Our results suggested that the optimal growth temperature of blueberry was highly dependent on cultivars. Therefore, the optimal temperature found in this study can be used as an indicator in selecting and breeding new blueberry strains in adapting to high temperatures in subtropical China where the market demands for blueberry products have been skyrocketing.
Page(s): 965-979
DOI: DOI not available
Published: Journal: Pakistan Journal of Botany, Volume: 49, Issue: 3, Year: 2017
Keywords:
Vaccinium corymbosum , blueberry , Optimal temperature , Gulfcoast , Duke , Brigitta , Bluecrop
References:
References are not available for this document.
Citations
Citations are not available for this document.
0

Citations

0

Downloads

3

Views