Original scientific paper

https://doi.org/10.33128/s1.32.1.1

BIOMASS OF PERENNIAL RYEGRASS CULTIVARS SOWED AFTER 5 YEAR SEED STORAGE PERIOD AT DIFFERENT TEMPERATURES

Goran Herman ; Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
Ranko Gantner ; Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
Vlado Guberac ; Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
Manda Antunović ; Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
Dario Iljkić ; Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
Gordana Bukvić ; Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia

Abstract

Seeds of two perennial ryegrass (Lolium perenne L.) cultivars (diploid ‘Bartwingo’ and tetraploid ‘Calibra’) were stored in hermetically sealed glass jars at four different temperatures (-80, -20, 10 and 20°C) for five years. After the storage period the seeds were sowed in containers filled with commercial substrate. Initial growth and development occurred under natural sunlight and manual watering to maintain optimum substrate moisture. After 60 days of vegetation plants were taken from the substrate, developed plants were counted, their roots were washed and whole plants were measured for shoot and root dry-weight and total biomass.Stems and leaves per plant were counted too. The research has revealed significant effects (p<0.01) of storage temperature, cultivar and their interaction to all of the investigated traits. When averaged over cultivars the highest values were observed upon storage temperature of -20°C for all the traits except root dry-weight which did not differ between -20 and -80°C. The lowest values of all investigated traits were observed upon storage at 20°C. When averaged over storage temperatures, diploid cultivar had greater number of stems and leaves and the tetraploid one had greater root dry-weight, shoot dry-weight and total biomass.

Keywords

perennial ryegrass; seed age; temperature; biomass dry-weight

Hrčak ID:

259457

URI

https://hrcak.srce.hr/259457

Publication date:

28.6.2021.

Article data in other languages: croatian

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