Comparison of winter oilseed rape varieties: cold acclimation, seed yield and quality

Journal Title: ŽEMDIRBYSTĖ-AGRICULTURE - Year 2010, Vol 97, Issue 3

Abstract

The purpose of our study was to investigate and compare the acclimatization to wintering, productivity formation, as well as seed yield and quality of different varieties of winter oilseed rape plants. The studied varieties were: very early, medium-resistant to wintering ‘Libea’, medium-early, resistant to wintering ‘Sunday’, and medium-early, less than medium resistant to wintering ‘Valesca’. The small-plot trials were performed at the Field Research Station of the Institute of Botany. Proline was extracted from the rape root collum and apical bud by using 3% sulfosalicylic acid; the SLT software was used for the analysis. Crude fat, crude protein and glucosinolates were analysed by near infrared spectroscopy using NIR Systems model 6500. The fatty acids were extracted from seeds employing the Folch’s method. Composition of fatty acids was analysed by gas chromatography. Comparison of the rape varieties tested during 2007 and 2008 revealed that under favourable germination and growth conditions plants of all tested varieties had developed optimum architecture (6–8 true leaves, root system, formed root collum); during the period of winter hardening the plants had intensively accumulated metabolite proline, which is partly responsible for cold resistance. In the winter oilseed rape hardening period (from BBCH 14–15 up to BBCH 16–17 stage) the amount of proline in the root collum of ‘Libea’ increased by 52%, of ‘Sunday’ – by 63%, of ‘Valesca’ – by 72%, while in the apical bud – by 11, 51 and 58%, respectively. Plants of the tested varieties successfully overwintered, especially ‘Valesca’ and ‘Sunday’. Comparison of the seed yield of the tested rape varieties, which is predetermined by the number of siliquae per plant, number of seeds per silique, seed weight, and meteorological conditions, revealed ‘Libea’ being somewhat more productive than ‘Sunday’ and ‘Valesca’. Fat yield, which depends not only on seed yield but also on the content of crude fat, was the highest in ‘Sunday’ seeds. Genotypic peculiarities partly govern the fatty acids (FA) composition. In ‘Sunday’ and ‘Valesca’ seed oil the content of saturated acids, especially of palmitic acid, was considerably lower, while the contents of unsaturated oleic, linoleic and linolenic fatty acids were higher in comparison with the results obtained for ‘Libea’ seed oil.

Authors and Affiliations

Leonida Novickienė, Virgilija Gavelienė, Laimutė Miliuvienė, Danguolė Kazlauskienė, Lina Pakalniškytė

Keywords

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  • EP ID EP150174
  • DOI -
  • Views 106
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How To Cite

Leonida Novickienė, Virgilija Gavelienė, Laimutė Miliuvienė, Danguolė Kazlauskienė, Lina Pakalniškytė (2010). Comparison of winter oilseed rape varieties: cold acclimation, seed yield and quality. ŽEMDIRBYSTĖ-AGRICULTURE, 97(3), 77-86. https://europub.co.uk/articles/-A-150174