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The Seasonal Variation of the Photosynthesis and Water Use Efficiency of ‘Red Fuji’ Apple in vitro/in vivoLeaves(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年02期
Page:
24-29
Research Field:
Publishing date:

Info

Title:
The Seasonal Variation of the Photosynthesis and Water Use Efficiency of ‘Red Fuji’ Apple in vitro/in vivoLeaves
Author(s):
YAN Teng- fei1SUN Yao- qing1WANG Hua- tian2GENG Bing2ZHANG Yong- tao2
1.Forestry Institute,Xinyang Agricultural and Forest College,Xinyang,Henan 464000;
2.National Apple Engineering and Technology Research Center,Agro- Eco- environmental Laboratory of Shandong Agricultural University,Tai’an,Shandong 271018
Keywords:
‘Red Fuji’ applephotosynthesisleaf water potentialwater use efficiency
PACS:
S 661.1
DOI:
-
Abstract:
Taking 25- year- old ‘Red Fuji’ apple as material,seasonal leaf water potential and photosynthesis in- vitroand in- vivoof them were measured,in order to explore the changes of leaf water potential and its influence on photosynthesis and water use efficiency in different period of growth and development of fruit trees.The results showed that in the early stage of burgeon and leaf expansion,blossoming and fruit setting,flower bud differentiation,leaf water potential gradually decreased,photosynthetic rate and transpiration rate were significantly lower than that in- vitroshoots.The decline of leaf water potential induced both transpiration and photosynthetic.Comprehensive analysis showed that WUE gradually decreased,and suggested that appropriate supplementary irrigation should be carried out in stage of burgeon and leaf expansion,blossoming and fruit setting in April and May.Moderate water stress was conducive to flower bud differentiation in June.In July and August,extent water potential decrease induced transpiration and WUE increased,and orchard irrigation was no needed unless continuance drought appeared in the rainy season in the trial district.After September,the WUE gradually enhanced,and the difference of photosynthetic and transpiration of in- vitroand in- vivbranches was decrescent,and there was no suggestion for orchard irrigation.

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Last Update: 2014-08-09