Effect of Different Tree-Age on the Growth and the Photosynthesis of Apple Cultivar ‘Bramely’(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:

2014年14期

Page:

31-33

Research Field:

Publishing date:

Info

Title:

Effect of Different Tree-Age on the Growth and the Photosynthesis of Apple Cultivar ‘Bramely’

Author(s):

ZHANG Ting¹; JIANG Wen²; WANG Kai-ping1; LIU Fang²; LUO Jian-xia¹

1.College of Horticulture and Landscape,Tianjin Agricultural College,Tianjin 300384;

2.Tianjin Cherry Valley Agricultural Technological Development Co.Ltd,Tianjin 301908;

3.Tianjin Cuipinghu Science Park,Tianjin 301936

Keywords:

tree-age; apple cultivar ‘Bramely’; growth; photosynthetic character

PACS:

S 661.1

DOI:

-

Abstract:

Using 2-year-old (non-bearing) and 5-year-old (bearing) ‘Bramely’ trees as test material,growth indexes such as shoot length,stem diameter and leaf area;photosynthetic indexes including net photosynthetic rate,transpiration rates,stomatal conductance and intercellular CO₂ concentration,abbreviations of the terms are Pn,Tr,Gs and int-CO₂ respectively;and pigment contents consisting of chlorophyll and carotenoid content were determined in the experiment.The results showed that the shoot length,leaf area,Pn,pigment content of fruiting trees were significantly or very significantly higher than that of un-fruiting trees but the transpiration rates of the former was very significantly lower than that of the later.There was no significant difference between fruiting and un-fruiting trees in respect of stem diameter,Tr and int-CO₂.What’s more,both carbon dioxide saturation point and compensation point of fruiting trees were higher than that of un-fruiting trees.A conclusion could be drown from comprehensive analysis that photosynthetic capacity and growth of the fruiting ‘Bramely’ tree were higher than that of the un-fruiting tree so correspondent cultivate measures should be taken in further research to improve the assimilative capacity of the un-fruiting trees.

References:

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