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  • Author: Gabriela Teodorescu x
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Spatial Variation in Blooming and Yield in an Apple Orchard, in Romania

Abstract

The aim of this study was to analyse the spatial variation of blooming, yield and quality parameters, in an apple orchard, by using precision agriculture tools. This study is a preliminary step in order to create management zones, to take the management decisions and made the evaluation of the applied practices. The study was conducted in the Research and Development Station for Pomology Voinesti, Dambovita, on the 0.9 ha orchard. The orchard consists in Florina apple trees and Generos pollinator. The surface was mapped with GPS and the yield of each tree was manually harvested and weighed. Apple quality was evaluated in terms of: firmness, soluble solid content, juice pH. Also, in spring was determined the number of flowers/tree and the exact period of flowering. The interpolated maps were created using Surfer 8 software and the correlations between yield and quality have been established; some quality characteristics are negatively correlated with yield, like firmness.

Open access
Exploration of Regeneration Potential of Extinct Plants Starting From Old Seeds, by in Vitro Technology

Abstract

The aim of the study is to try a systematic and rational exploration of regeneration potential of extinct taxons, starting from old seeds found in the soil or in the herbarium, to study their germination potential with the purpose of biodiversity conservation. The species involved in this study are: Achillea spinosa, Chenopodium wolfii. Several protocols for the in vitro propagation of the species, starting from the seed are described in this study. The presence of callus during micropropagation of plants has also been the object of research for different compositions of nutritive medium.

Open access