| The effect of infrared heating on physiological parameters of korla fragrant pear trunk cambium during over-wintering period |
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| DOI：10.7606/j.issn.1000-7601.2016.06.33 |
| Key Words: korla fragrant pear over-wintering period infrared heating trunk cambium temperature physiological parameters freezing-heating cycle |
| Author Name | Affiliation | | Akrem Ahmet | College of Grassland and Environmental Science, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | Ablet Mamat | Forest Management Station of Hotan Prefecture, Hotan, Xinjiang 848000, China | | Batur Bake | College of Grassland and Environmental Science, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | Altun Tursunhali | College of Grassland and Environmental Science, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | Sajida Abdukarim | College of Grassland and Environmental Science, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | Zulkiye Manaf | College of Grassland and Environmental Science, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China |
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| Abstract: |
| To explain the effect of cambium temperature changes on its physiological parameters during over-wintering period, infrared lamps was used to heat the sunny side cambium of Korla fragrant pear trunk to temperature treatment of 16℃, 19℃, 22℃, 25℃, 28℃, 31℃ and 34℃,respectively, during diurnal maximum solar radiation and air temperature. The actual temperature of trunk cambium was measured by thermocouple temperature sensors and its physiological factors were measured simultaneously. Results showed that, after increasing the diurnal cambium temperature difference to the maximum value, compared with the control, the activities of SOD, POD and CAT were declined by 83.60%, 84.62% and 47.56%, and the relative electrical conductivity and soluble protein content were increased by 41.46%,46.81%. The physiological indexes were negatively co
rrelated with the cambium temperature and the correlation of CAT, soluble protein content and relative conductivity was significant. The diurnal cambium temperature difference or freezing-heating cycle was negatively correlated with the physiological parameters and the correlation of CAT, soluble protein content and relative conductivity significantly. Moreover, SOD activity showed the most sensitive response to the cambium temperature change. POD has played a protection against the temperature change while its activity change was smaller than SOD. CAT activity changed the smallest. The soluble protein could relieve the degree of cell damage by adjusting the osmotic potential. |
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