|Table of Contents|

Screening，Identification and Promoting Effects of Potassium-solubilizing  Bacteria in Rhizosphere of Cucumber(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年13
Page:
21-25
Research Field:
Publishing date:

Info

Title:
Screening，Identification and Promoting Effects of Potassium-solubilizing  Bacteria in Rhizosphere of Cucumber
Author(s):
GE Honglian; JI Xiu′e
(College of Life Science and Agronomy，Zhoukou Normal University，Zhoukou，Henan 466001)
Keywords:
cucumber; K-solubilizing baceria; rhizosphere; screening; growth promotion
PACS:
-
DOI:
10.11937/bfyy.20164683
Abstract:
Rhizosphere soil of cucumber was used as test material，K solubilizing bacteria were isolated in Alexandrove medium.The ability of dissolving potassium of K solubilizing bacteria were determined with the atomic absorption spectrophotometer，then the strains with stronger K solubilizing bacteria were identified，meanwhile，the effects on the growth of cucumber seedling were studied.The results showed that nine K solubilizing bacterium strains were isolated from cucumber rhizosphere soil,in which PK1，PK3 and PK7 demonstrated strong potassium decomposing ability，and potassium decomposing rate of them cultivated in liquid medium for 96 hour was 30.05%,33.78% and 44.01%，respectively.Based on the morphological and physiological and biochemical characterestics，PK1 and PK3 were identified into Pseudomones putida，PK7 was Paenibacillus mucilaginosus.In pot experiment，after 14 days PK1 increased the root length，plant height as well as fresh weight and dry weight of cucumber seedling by 42.60%，10.45%，48.65% and 33.01%，PK3 increased the correspondents by 65.26%，21.09%，83.78% and 49.48%，and PK7 increased the correspondents by 79.46%，44.26%，105.41% and 113.03%，respectively，compared with the control.

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Last Update: 2017-07-17