Morphological and phenological variation in three populations of saffron thistle (Carthamus lanatus L.) from Western Australia [weed of pastures and cereals]
1990
Pierce, J.R. (Western Australian Dept. of Agriculture, Perth)
Cypselas from 3 sites were grown; 2 distinct forms could be observed from differences in their phenology and the shape of cotyledons and achenes. After 2 generations at a central site, different accessions of the same form, as well as the forms themselves, showed differing responses to pretreatments of seed in germination. Differences in germination were also observed when a single accession was sown at 2 sites in the cereal-growing districts.
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