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Effects of Calcium and Phosphorus Interaction on Photosynthesis and Defense Enzyme Activity of Tomato(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2013年09期
Page:
190-193
Research Field:
Publishing date:

Info

Title:
Effects of Calcium and Phosphorus Interaction on Photosynthesis and Defense Enzyme Activity of Tomato
Author(s):
XU Long-chao; YI Yan-li; ZHOU Xiao-yang
College of Land and Environment,Shenyang Agricultural University,Shenyang,Liaoning 110866
Keywords:
calcium; phosphorus; tomato; photosynthesis; defense enzymes
PACS:
S 641.2
DOI:
-
Abstract:
With ‘Liaoyuanduoli’ tomato as material，two elements including calcium supply (three levels) and phosphorus (three levels) were conducted to study the interaction effects of calcium and phosphorus on photosynthesis and defense enzyme activity of tomato,in order to reveal the regulating effects of and phosphorus under different conditions on photosynthesis and defense enzyme activity and elucidate the feasible combination of and phosphorus for better growth of tomato.The results showed that appropriate phosphate fertilizer could improve the leaf photosynthetic pigment of tomato.The net photosynthetic rate (Pn) and transpiration rate (Tr) of tomato leaf was the highest in the same calcium level medium phosphorus levels (P2).Ca2P2 treatment could effectively improve tomato photosynthetic capability.The results showed that there was a positive correlation between calcium and photosynthesis.Tomato leaf defense enzyme CAT，PAL and POD，PPO activity were higher in high calcium level；the same seems calcium conditions，low phosphorus level tomato defense enzyme activity was higher.

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Last Update: 2014-08-25