Characterisation of 32 cultivars of Phaseolus vulgaris has been obtained by densitograms of protein patterns, which were evaluated by starch‐gel electrophoresis of protein fractions obtained by single extraction of bean seeds with water. Experiments indicated that the protein patterns are unlikely to be affected by external conditions such as N fertilisation, climatic conditions and soil properties.
This study of quantitative determination of nitrite and nitrate contents is based on spectrophotometric measurement of the red colour formed when sulphanilic acid is diazotised by the nitrite to be determined and coupled to 1‐naphthylamine‐7‐sulphonic acid (Cleve's acid 1‐7). Nitrate is first reduced to nitrite in a cadmium reducing column.
Good results have been obtained with some horticultural and meat products and samples of soil.
This investigation supplements the previously reported characterisation of 32 cultivars of Phaseolus vulgaris and led to results for 5 cultivars of Vicia faba and 3 cultivars of Pisum sativum. Moreover, proteins of S1 fractions of commercial seeds of three Phaseolus vulgaris, two Vicia faba and three Pisum sativum cultivars were fractionated; electrophoretic patterns obtained for the albumin fractions (Fl) are characteristic for the species used. By fractionation, three different globulin fractions (F2-F4) are obtained; after electrophoresis optimum cultivar differences appear in the legumin patterns (F2).
Als ich vor einigen Jahren mit Beobachtungen an canzpestris Jur. anfing, konnte ich nicht ahnen, dass mich dies zur Entdeckung zweier ganz verschiedener Lebensformen innerhalb dieser Gruppe fuhren sollte. Nachdem J. WILCKE diese beiden Formen morphologisch untersucht hatte, stellte sich heraus, dass sie zu zwei morphologisch verschiedenen Arten gehorten, deren Namen den Titel dieses Aufsatzes bilden. Weitere
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