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personal data approved: 2014. IX. 17.
Personal data
Lajos Helyes
name Lajos Helyes
year of birth 1956
name of institution
Szent István University, Gödöllő
Doctoral Council of the University
doctoral school
SzIE Plant Science Doctoral (PhD) School (Core member)
Council of the Doctoral School (chairman)
SzIE Doctoral School of Biology Sciences (Academic staff member)
doktori képzéssel kapcsolatos munkájának megoszlása SzIE Plant Science Doctoral (PhD) School 74%
SzIE Doctoral School of Biology Sciences 20%
SzIE PSDS Council of the Doctoral School (chairman) 5%
SzIE Doctoral Council of the University 1%
accreditation statement submitted to: Szent István University, Gödöllő
Contact details
E-mail address helyes.lajosmkk.szie.hu
phone number +36 28 522-071
own web page
Academic title
scientific degree, title Ph.D.
year degree was obtained 1996
discipline to which degree belongs plant breeding and botany
institution granting the degree SZENT ISTVÁN EGYETEM (to be translated)
scientific degree, title DSc
year degree was obtained 2008
discipline to which degree belongs plant breeding and botany
institution granting the degree HAS
Places of employment
1983 - Szent István University, Gödöllő
university professor or researcher
Thesis topic supervisor
number of doctoral students supervised until now 9
number of students who fulfilled course requirements 5
students who obtained their degrees:
Ferenc Lantos PhD 2011  PSDS
(50%) Sára Brandt PhD 2007  DSBS
Zoltán Pék PhD 2005  PSDS

students with degree granting in process:
completed course requirement, without degree or degree granting in process:
András Bőcs (PhD) 2014/08  PSDS
present PhD students:
Arnold Koncsek (PhD) (2017)  PSDS
Miklós Pék (PhD) (2017)  PSDS
Zsuzsa Nagy (PhD) (2016)  PSDS
Konrád János Deák (PhD) (2015)  PSDS
Zsuzsanna Ambrózy (PhD) (2015)  PSDS
  Thesis topic proposals
Research
research area Effect of biotic and abiotic factors on nutritional values of vegetable crops (tomato, sweet pepper, onion, eggplant, carrot broccoli, etc.) particularly on antioxidants (lycopene,etc) content
research field in which current research is conducted plant breeding and botany
Publications
2013

Pék Z, Daood H, Gasztonyi Nagyné M, Neményi A, Helyes L: Effect of environmental conditions and water status on the bioactive compounds of broccoli., CENTRAL EUROPEAN JOURNAL OF BIOLOGY 8: (8) pp. 777-787.
type of document: Journal paper/Article
impact factor: 0.633
number of independent citations: 5
language: English
Full text of document 
2013

Ombódi A, Koczka N, Lugasi A, Daood H, Berki M, Helyes L: Nutritive Constituents of Onion Grown from Sets as Affected by Water Supply., HORTSCIENCE 48: (12) pp. 1543-1547.
type of document: Journal paper/Article
impact factor: 0.855
language: English
2012

Helyes L, Lugasi A, Pék Z: Effect of irrigation on processing tomato yield and antioxidant components., TURKISH JOURNAL OF AGRICULTURE AND FORESTRY 36: (6) pp. 702-709. Paper doi:10.3906/tar-1107-9 IF: 0.703.
type of document: Journal paper/Article
impact factor: 0.731
number of independent citations: 6
language: English
Full text of document 
2011

Pék Z, Szuvandzsiev P, Neményi A, Helyes L, Lugasi A: The Effect of natural light on changes in antioxidant content and color parameters of vine-ripened omato (Solanum lycopersicum L.) fruits., HORTSCIENCE 46: (4) pp. 583-585.
type of document: Journal paper/Article
impact factor: 0.778
number of independent citations: 10
language: English
Full text of document 
2010

Pék Z, Helyes L, Lugasi A: Color changes and antioxidant content of vine and post-harvest ripened tomato fruits., HORTSCIENCE 45: (3) pp. 466-468.
type of document: Journal paper/Article
impact factor: 0.886
number of independent citations: 17
language: English
Full text of document 
2009

Helyes L, Lugasi A, Pogonyi Á, Pék Z: Effect of variety and grafting on lycopene content of tomato ( Lycopersicon lycopersicum L. Karsten) fruit, ACTA ALIMENTARIA 38: (1) pp. 27-34.
type of document: Journal paper/Article
impact factor: 0.505
number of independent citations: 15
language: English
Full text of document 
2006

Brandt S, Pék Z, Barna É, Lugasi A, Helyes L: Effect of maturity stage on content, color and quality of tomato (Lycopersicon lycopersicum (L.) Karsten) fruit., JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 86: (4) pp. 568-572. Paper ISSN 1585-0404.
type of document: Journal paper/Article
impact factor: 1.026
number of independent citations: 115
language: English
2006

Helyes L, Lugasi A: Formation of certain compounds having technological and nutritional importance in tomato fruits during maturation., ACTA ALIMENTARIA 35: (2) pp. 183-193.
type of document: Journal paper/Article
impact factor: 0.253
number of independent citations: 28
language: English
2006

Helyes L, Lugasi A, Pék Z: Tomato fruit quality and content depend on stage of maturity., HORTSCIENCE 41: (6) pp. 1400-1401.
type of document: Journal paper/Article
impact factor: 0.613
number of independent citations: 30
language: English
2004

Pék Z, Helyes L: The effect of daily temperature on truss flowering rate of tomato., JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 84: (13) pp. 1671-1674.
type of document: Journal paper/Article
impact factor: 0.871
number of independent citations: 13
language: English
Cumulative impact factor of the 10 most significant publications:7.151 
Number of independent citations to these publications:239 
Scientometric data
list of publications and citations
number of scientific publications that meet accreditation criteria:
155
number of scientific publications:
208
monographs and professional books:
6
no. of monographs/books in which chapters/sections were contributed:
14 
cumulative impact factor:
20.384
number of independent citations to scientific publications:
594
further relevant information regarding accreditation (in Hungarian)
2004-ben sikeresen habilitáltam, 2008-tól az MTA doktora. Tudományos tevékenységem során összesen 257 közleményem jelent meg, amelyből 152 tudományos cikk, ebből 98 angol nyelvű. Összes hivatkozásaim száma:640, ebből független 604 Összes IF: 20,4 Hirsch-index 13 (to be translated)

 
All rights reserved © 2007, Hungarian Doctoral Council. Doctoral Council registration number at commissioner for data protection: 02003/0001. Program version: 1.1458 ( 2014. IX. 11. )