Fig. 1

Morphology of the trichomes in seedling development in S. ferganica. a–b Trichomes on a seedling grown in the natural habitat. c–d Trichomes on a seedling grown indoors. e–h Germination process (at 24 h, 36 h, 60 h, and 3 d of seed germination). i–l The true leaves and trichomes at the growth point between two cotyledons under a stereomicroscope (corresponding to that of e–h in the boxes). Scale bar: a–d, 500 μm; e–g, 1000 μm; h, 2000 μm; i–k, 150 μm; l, 250 μm. C: cotyledon; L: leaf; E: epidermal cell; T: mature trichomes