EJPAU 2015. Tylek P. , Kaliniewicz Z. , Kiełbasa P. , Zagrobelny T. MASS AND DENSITY AS SEPARATION CRITERIA OF PEDUNCULATE OAK (<i>QUERCUS ROBUR</i> L.) SEEDS

Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

2015
Volume 18
Issue 4

Topic:

Forestry

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Tylek P. , Kaliniewicz Z. , Kiełbasa P. , Zagrobelny T. 2015. MASS AND DENSITY AS SEPARATION CRITERIA OF PEDUNCULATE OAK (QUERCUS ROBUR L.) SEEDS, EJPAU 18(4), #05.
Available Online: http://www.ejpau.media.pl/volume18/issue4/abs-05.html

MASS AND DENSITY AS SEPARATION CRITERIA OF PEDUNCULATE OAK (QUERCUS ROBUR L.) SEEDS

Paweł Tylek¹, Zdzisław Kaliniewicz², Paweł Kiełbasa³, Tomasz Zagrobelny¹
¹ Department of Forest Work Mechanisation, University of Agriculture in Krakow, Poland
² Department of Heavy Duty Machines and Research Methodology, University of Warmia and Mazury, Poland
³ Institute of Machinery Management, Ergonomics and Production Processes, University of Agriculture in Krakow, Poland

ABSTRACT

The growth of seedlings in the juvenile phase and the distribution of biomass
in oak seedlings (Quercus robur L.) are significantly affected by seed
weight. For the purposes of separation, what is important is the density of
seeds, used in practice as the separative feature. The aim of the study is to
determine the properties of oak acorns, such as mass, volume and density, depending
on their vitality. A hypothesis was made that the degree of development of the
embryo and the mummification of acorns affect the above physical characteristics.
In order to measure the mass and determine the density, an analytical balance
was used with a set applied to determine the density of solids; vitality was
determined by slicing, performing a macroscopic examination of embryonic development,
cotyledon tissue condition, the root ovary and the internal damage caused by
fungi and insects. It was shown that the density of the acorns, and to a limited
extent also their mass, depend on vitality; therefore they may be regarded as
distributive characteristics. There is, however, no possibility to separate only
the healthy seeds; healthy seeds together with half-spoiled seeds can be separated
from the remaining, spoiled ones.

Key words: germination capacity, pedunculate oak, seed density, seed weight, seed quality, separation.

Paweł Tylek
Department of Forest Work Mechanisation, University of Agriculture in Krakow, Poland
29 Listopada 46
31-425 Kraków
Poland

Zdzisław Kaliniewicz
Department of Heavy Duty Machines and Research Methodology, University of Warmia and Mazury, Poland

Paweł Kiełbasa
Institute of Machinery Management, Ergonomics and Production Processes, University of Agriculture in Krakow, Poland

Tomasz Zagrobelny
Department of Forest Work Mechanisation, University of Agriculture in Krakow, Poland
29 Listopada 46
31-425 Kraków
Poland

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.