|Table of Contents|

Effects of Different Phosphorus (P) Levels on Photosynthesis and Chlorophyll Fluorescence Characteristics of ‘Jinfeng’ Pear

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年06
Page:
65-68
Research Field:
Publishing date:

Info

Title:
Effects of Different Phosphorus (P) Levels on Photosynthesis and Chlorophyll Fluorescence Characteristics of ‘Jinfeng’ Pear
Author(s):
YUAN Jicun; ZHAO Deying; XU Kai; YAN Shuai; CHENG Cungang
(Institute of Pomology,Chinese Academy of Agricultural Sciences/Key Laboratory of Fruit Germplasm Resources Utilization,Ministry of Agriculture/Key Laboratory of Mineral Nutrition and Fertilizers Efficient Utilization of Deciduous Fruit Tree,Xingcheng,Liaoning 125199)
Keywords:
phosphorus; ‘Jinfeng’ pear; photosynthesis; chlorophyll fluorescence
PACS:
-
DOI:
10.11937/bfyy.20182461
Abstract:
‘Jinfeng’ pear was taken as test material,the effects of different phosphorus (P) levels (0,0.5,1.0,1.5,2.0,2.5 mmol?L-1) on photosynthesis and chlorophyll fluorescence characteristics of pear leaves were studied by using hydroponics experiment in order to provide theoretical basis forrational fertilization of pear trees.The results indicated that the Pn，Tr，WUE，Fo，Fm，Fv，Chl a，Chl b and Car were increased at firstly and then decreased with the increasing of P concentrations,under the treatment of 1.5 mmol?L-1,those indexes were the highest,which were increased by 78.0%,31.3%,37.2%,9.04%,9.49%,9.57%,42.7%,60.9% and 37.8% respectively compared with the treatment of 0 mmol?L-1．The results showed that the photosynthetic performance of ‘Jinfeng’ pear was the best under the phosphorus supply.Therefore,the optimum phosphorus concentration of the cultivated pear was 1.5 mmol?L-1 under the conditions of this test.

References:

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Last Update: 2019-04-18