Abstract
with colder and wetter in May and with hotter and drier in May, suggesting drought in May might be effective on seed
weight variation of I. dichotoma. Moderate normalised seed weight associated for years with hotter in June while high and
low normalised seed weight for years with cooler and cool in June, suggesting I. dichotoma might use both photosynthetic
productions and underground-storage for seed maturity. Mean seed weight and seed weight variation were linked to
precipitation amount whereas normalized seed weight was linked to precipitation periodicity. Seed weight variation detected
delay of regrowth, caused by early drought while normalized seed weight suggested seed weight response to complete
seed maturation after droughty season, using photosynthetic productions and underground-storage. The results suggest
that normalized seed weight might be useful to recognize seed weight response of I. dichotoma for climatic factors, better
than mean seed weight and seed weight variation.
Keywords
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