Genotype and environmental interaction of certain indices of dormancy in winter wheat

A. Binek and M. Moś
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A. Binek: Department of Plant Breeding and Seed Science, Agricultural University in Cracow, Poland
M. Moś: Department of Plant Breeding and Seed Science, Agricultural University in Cracow, Poland

Plant, Soil and Environment, 2005, vol. 51, issue 9, 390-396

Abstract: On the basis of five statistical parameters the stability of three dormancy indices, i.e. germinability, germination rate and dormancy index, has been determined 10 days after harvest at temperatures of 25°C. The object of the research included seeds of 12 winter wheat cultivars harvested in the years 1997-2003. In spite of significant genotype x environmental interactions accounting for 23.8-50.6% of the total variation, a significant differentiation between all the indices was found. Among the investigated cultivars a low level of dormancy was observed in the cultivars Wanda, Juma and Begra (germinability 83-92%, dormancy index 7.7-9.5), while evident dormancy was found in the cultivars Elena, Izolda, Almari, Mikon and Kobra (germinability 44-58%, dormancy index 21.3-32.2). The cultivars showing deep dormancy were characterized by lower stability of both the indices. The cultivars strongly reacting to the seasonal variation (b1 > 1), in respect of the three indices, were Sakwa, Kobra, Mikon and Elena. High consistency of the stability parameters was found between ecovalence and mean square of deviations from regression (r = 0.87**-0.98**) and between the linear regression coefficient and the coefficient of determination (r = 0.69*-0.86**).

Keywords: winter wheat; cultivars; germinability; germination rate; dormancy index; stability parameters (search for similar items in EconPapers)
Date: 2005
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:51:y:2005:i:9:id:3602-pse

DOI: 10.17221/3602-PSE

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