Hungarian Doctoral Council


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Personal data sheet

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personal data approved: 2013. I. 11.

Personal data

name

Lajos Helyes

year of birth

1956

name of institution

Szent István University, Gödöllő

doctoral school

SzIE Plant Science Doctoral (PhD) School (Core member)
SzIE Doctoral School of Biology Sciences (Announcer of research topic)

accreditation statement submitted to:

Szent István University, Gödöllő

HAC accreditation

full compliance
(2009. X. 02.)

Contact details
E-mail address	helyes.lajosmkk.szie.hu
phone number	+36 28 522-071

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

number of students who fulfilled course requirements

students who obtained their degrees:

	Lantos Ferenc	PhD	2011	PSDS
(50%)	Brandt Sára	PhD	2007	DSBS
	Pék Zoltán	PhD	2004	PSDS

students with degree granting in process:

Bőcs András	PhD	(2012)	PSDS
Schober Gyula Márton	PhD	(2013)	PSDS

present PhD students:

Szuvandzsiev Péter

PhD

(2014)

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

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
type of document: Journal paper/Article
impact factor: 0.703
language: English
Full text of document

2011

Helyes, L. Lugasi, A. Péli, E. Pék, Z: Effect of elevated CO2 on lycopene content of tomato (LYCOPERSICON LYCOPERSICUM L. KARSTEN) fruits, Acta Alimentaria, 40. (1), pp. 80-86
type of document: Journal paper/Article
impact factor: 0.404
language: English
Full text of document

2011

Pék, Z. Szuvandzsiev, P. Nemenyi, 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, pp. 583-585
type of document: Journal paper/Article
impact factor: 0.886
number of independent citations: 2
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: 4
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: 4
language: English
Full text of document

2007

Helyes L.- Lugasi A.- Pék Z.: Effect of natural light on surface temperature and lycopene content of vine ripened tomato fruit., Canadian Journal of Plant Science. 87. (4), pp. 927-929
type of document: Journal paper/Article
impact factor: 0.722
number of independent citations: 6
language: English
Full text of document

2006

Brandt S.- Pék Z. – Barna É. – Lugasi A. – Helyes L: Lycopene content and colour of ripening tomatoes as affected by environmental conditions., Journal of the Science Food and Agriculture 86: (4), pp. 568-572
type of document: Journal paper/Article
impact factor: 1.026
number of independent citations: 71
language: English
Full text of document

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: 22
language: English
Full text of document

2006

Helyes L. – Lugasi A: Formation of certain compounds having technological and nutritional importance in tomato fruits during maturation., Acta Alimentaria, pp. 183-193
type of document: Journal paper/Article
impact factor: 0.253
number of independent citations: 17
language: English
Full text of document

2004

Pék Z. – Helyes L: The effect of daily temperature on truss flowering rate of tomato, Journal of the Science Food and Agriculture 84: (13), pp. 1671-1674
type of document: Journal paper/Review paper
impact factor: 0.871
number of independent citations: 10
language: English
Full text of document

Cumulative impact factor of the 10 most significant publications:

6.869

Number of independent citations to these publications:

136

Scientometric data

list of publications and citations

number of scientific publications that meet accreditation criteria:

117

number of scientific publications:

223

monographs and professional books:

no. of monographs/books in which chapters/sections were contributed:

cumulative impact factor:

12.394

number of independent citations to scientific publications:

383

further relevant information regarding accreditation (in Hungarian)
2004-ben sikeresen habilitáltam, 2008-tól az MTA doktora. Tudományos tevékenységem során összesen 225 közleményem jelent meg, amelyből 162 lektorált publikáció, ebből több mint 100 angol nyelvű. Összes hivatkozásaim száma:416, Összes IF: 12,394 Hirsch-index 11 (to be translated)