The factors affecting the acorn production of Pedunculate Oak (Republic of Moldova)
Journal Title: Scientific Annals of the Danube Delta Institute - Year 2018, Vol 23, Issue
Abstract
The paper presents the evolution of the formation and development of the pedunculate oak acorns during vegetation season. The study was conducted in two variants: variant control and variant flower / acorn isolated. Results showed that only 6.8% of the initial number of flowers have become mature acorns healthy to the control variant. The non-fecundated flowers represented 21%, but 65.2 % felt down in the different stages of the acorns development. From the carpophagus insects, Curculio glandium was that attacked 7% of the initial number of flowers. To the variant flower / acorn isolated, the healthy mature acorns constitute 13.8% of the initial number of flowers. As for the non-fecundated flowers and aborted acorns by the plant, they accounted 26.5% and 59.7%
Authors and Affiliations
JARDAN Natalia
Keywords
Related Articles
- EP ID EP288334
- DOI 10.7427/DDI.23.07
- Views 100
- Downloads 0
Preliminary Data on the Studies of Alosa immaculate in Romanian marine waters
Danube shad is a fish with high economic and socio-cultural value for the human communities established in the Danubian-Pontic space. In Romania, shad fishery has a market value of about 1.5 million euro, with average an...
Seasonal variations of trace metals of Eastern Black Sea streams of Turkey: a case study of Firtina, İkizdere and Çağlayan
The main aim of this study is to determine the seasonal changes of dissolved and particulate trace metals and compere according to various quality criteria in the selected rivers of the Eastern Black Sea. In this study s...
A pilot study of two Lower Danube sturgeon species offspring diversity in a feeding area community
Current knowledge about sturgeon behavior is incomplete and certain aspects of it are completely unknown, despite tremendous conservation efforts. This paper describes aspects of annual recruitment, fitness distribution...
Danube Delta Biosphere Reserve: archaeological patrimony
Danube Delta Biosphere Reserve is home of an impressive number of archaeological and historical sites. The earliest traces of human presence on this territory date back to the Middle and Late Paleolithic. Such traces are...
Spatial and seasonal variations of heavy metals in water and sediment samples collected from the Lower Danube River
Surface water pollution with heavy metals represents one of the most relevant environmental issues, with severe outcomes on every other environmental compartment, affecting therefore the human health because of their tox...