Stamen ontogeny in the temperature-sensitive ‘stamenless-2’ mutant of tomato (Lycopersicon esculentum L.)

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In the temperature-sensitive ‘stamenless-2’ (sl-2/sl-2) mutant of tomato (Lycopersicon esculentum L.), normal-looking stamens are produced under low temperatures, but under high temperature conditions carpelloid stamens develop. Under low temperature conditions, the mutant stamens follow a pattern of development comparable to the normal (+/+) stamens in all respects, e.g. initiation, locule formation and hair production. The ontogeny of carpelloid stamens under high temperature conditions diverged from that of the normal and low temperature-grown mutant stamens at an early stage of development (<0.2 mm), and followed a sequence of development similar to that of the apocarpous gynoecia of other species.

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