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Evaluation of pod, seed, and phenological traits of common beans
Germination
The factor year had a significant influence on germination: Almost 83% of the variability
in germination rate was directly related to the factor year. Genotype, on the
other hand, had no significant effect on germination. Low temperatures in May (2 m
above soil surface) increased germinability, whereas temperatures in June and July
did not have any effect on germination rate. Surprisingly, low August temperatures
were connected to a low germination rate, whereas the opposite was true for high
and normal August temperatures.
Neither the amount of precipitation in every month nor air humidity had a significant
effect on germination. Averaged over the entire cultivation period (May to August),
there was no significant effect of the three factors temperature, precipitation and air
humidity, on germination.
Thousand Grain Weight
The accession PHA 6018 exhibited a significantly lower Thousand Grain Weight than
all other accessions. However, the factor year had no significant effect on Thousand
Grain Weight.
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