Potential for Persistence of Genes Escaped from Canola: Germination Cues in Crop, Wild, and Crop-Wild Hybrid Brassica rapa (original) (raw)

Functional Ecology, 1993

Abstract

Seeds of two wild populations, a crop type (canola) and reciprocal crop-wild hybrids of Brassica rapa were exposed to a factorial combination of light, nutrient and stratification treatments in a growth chamber study to test differences in germination responses to environmental cues. The effects of seed density and nutrient treatment on germination were tested in a separate study. Germination of each type differed in response to treatment combinations. Canola had higher levels of germination than the wild populations. Hybrid germination more closely resembled that of the maternal parent than that of the reciprocal hybrid or paternal parent. Seeds from agricultural and non-agricultural wild populations differed in germination responses to treatments (...)

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