Abstract
Abstract Dry Matter Production of Spelt (Triticum spelta L.) and Wheat (Triticum aestivum L.) under Different Environmental Conditions in the Field The primary aim of our work was to obtain information regarding the germination characteristics of spelt under different environmental conditions in field experiments, and to trace possible differences between spelt and wheat, with regard to crop production. For the present study two spelt varieties (Ostro/Rouquin) and two wheat varieties (Arina/Probus) were used. In addition the spelt cultivars Altgold, Oberkulmer and Hercule were included in some of the experiments. To obtain information on the influence of the glumes, spelt was planted in the hulled (SP +) and dehulled (SP‐) form.Field emergence of spelt SP‐ was up to 40 % lower than that of SP+, Under water logged soil, the percentage of germination was higher for spelt SP+ than for wheat.Spelt produced more tillers per plant than wheat. However, tiller reduction was also higher for spelt so finally both species had similar numbers of ears per plant. Plants with a high tiller production might be more flexible in response to unfavourable growing conditions.Grain yield of spelt and wheat was developed in different ways. Spelt produced fewer but larger kernels per ear, whereas wheat produced more but smaller kernels. In 1986 grain yield was up to 20 % higher in wheat than in spelt. In 1987, an unfavourable year for cereal crop production in marginal areas, grain yield was higher for spelt than for wheat. For the farmer, the “husked” form of spelt is economically important. This was equal or higher than the grain yield of wheat in both years.The high germination rate under unfavourable conditions, in combination with a high tillering capacity and the production of large kernels appear to be the major reason for the stable yielding ability of spelt.
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