ISHS Acta Horticulturae 215: Seed Research in Horticulture
GERMINABILITY OF THE SEEDS OF RUNNER BEANS AT LOW TEMPERATURES. EVALUATION OF LOCAL VARIETIES. |
| Authors: | L. Quagliotti, M. Gennari |
| Abstract:
The aim of the research is the characterization of the germplasm of runner been we are collecting in north-west Italy; beside that we intend to select for the capacity of the seeds to germinate at low temperatures. The work was carried out on nine local varieties of Phaseolus vulgaris L. and two of Phaseolus coccineus L. The seeds were tested for the water uptake capacity, for the germinability in sand and for the emergence in soil, at 20°, 16°, 12°, 8° C. The results show a strong effect of the vigour of the lot of seed, as the germination of the same ecotype from the crop of two different years was quite different. The informations more useful seem to ensue from the germination trials at 12°C (tab. 3): already at the seventh day the differences among varieties were rather clear. The tests for water uptake capacity and for emergence in soil gave less significant results. Among the varieties of P. vulgaris 'Rampicante scarlatto', 'Rimini' (tab. 3) seems the more capable to germinate at sub-optimal temperatures; the first one had also the less differences between germination in laboratory and field emergence (tab.1). | |
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