Photosynthesis Determination of Apple Shoots Leaves(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:

2012年16期

Page:

12-16

Research Field:

Publishing date:

Info

Title:

Photosynthesis Determination of Apple Shoots Leaves

Author(s):

DU She-ni ¹; 2; SONG Yao-xing³; ZHANG Pei-qi³

1.Institute of Soil and Water Conservation，Northwest Agricultural and Forestry University，Yangling，Shaanxi 712100；

2.Institute of Soil and Water Conservation，Chinese Academy of Sciences and Ministry of Water Resources，Yangling，Shaanxi 712100；

3.Institute of Inner Mongolia Hydraulic Research，Huhhot，Inner Mongolia 010020

Keywords:

apple; new shoots; leaves; photosynthesis

PACS:

S 661.1

DOI:

-

Abstract:

As apple tree had numerous shoots and leaves，that were inconvenience to accurately determine leaves photosynthetic capacity.In order to facilitate the accurate determination of leaves photosynthetic capacity，‘Red Fuji’ apple tree that grafted on vigorous rootstock，in full productive stage had been as the determination tree.The largest leaf photosynthetic capacity of elongated shoots，development shoots，lateral shoots of bearing part and leafage shoots that grown in southeast mid-outer crown had been determined by LI-6400 photosynthesis system.The results showed that the diurnal variation of photosynthetic rate and stomatal conductance of different shoots leaves showed bimodal curve，the diurnal variation of transpiration showed single curve，and the diurnal variation of intercellular concentration showed anti-parabola curve.The leaves photosynthetic capacity of elongated shoots were higher，leafage shoots were lower，and development shoots，lateral shoots of bearing part were middle.The leaves of development shoots had less affected by fruit growth，they should be suitable as photosynthesis leaves.

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