|Table of Contents|

Effects of Exogenous Putrescine on the Photosynthetic Characteristics of Apple Seedling Under Drought Stress(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2013年21期
Page:
26-29
Research Field:
Publishing date:

Info

Title:
Effects of Exogenous Putrescine on the Photosynthetic Characteristics of Apple Seedling Under Drought Stress
Author(s):
ZHANG YuanGUO Xing-keXU Ji-zhong
College of Horticulture,Agricultural University of Hebei,Baoding,Hebei 071001
Keywords:
putrescine (Put)drought stressphotosynthesisapple
PACS:
S 661.1
DOI:
-
Abstract:
Taking ‘Gala’ apple (Malus domestica.Borkh.cv.Gala) as material,the effect of exogenous putrescine (Put) on daily changes of photosynthesis and gas exchange parameters of apple seedling under drought stress were studied.The results showed that the net photosynthesis rate (Pn) decreased gradually with the increase of stress intensity.Under drought stress,exogenous Put promoted the Pn,stomatal conductance (Gs),maximum regeneration rate of RuBp (Jmax) and maximum photosynthesis rate (Pnmax),while intercellular carbon dioxide concentration (Ci) decreased.These results indicated that the application of exogenous Put could alleviate drought-induced damage on photosynthetic apparatus.Under this experimental condition,the effects of 1×10-4 mol/L Put was the better concentration.

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Last Update: 2014-08-26