A reliable protocol for flowering and fruiting in cuttings was developed.

• Abstract
• Introduction
• Materials and Methods
• Results and Discussion
• Literature cited
• Figures
• Tables

Biology Articles » Botany » Phenology of Flowering and Starch Accumulation in Grape (Vitis vinifera L.) Cuttings and Vines » Figures

Figures

- Phenology of Flowering and Starch Accumulation in Grape (Vitis vinifera L.) Cuttings and Vines

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FIG. 1. Phenology of the ‘Gewurztraminer’ grape cuttings: (A) visible clusters (stage 12); (B) separated clusters (stage 15); (C) separated floral buds (stage 17); (D) flowering onset (stage 21); (E) end of flowering (stage 25); and (F) fruit set (stage 27). Scale bars = 1 cm.

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FIG. 2. Development of grape inflorescences in ‘Gewurztraminer’ (open symbols) and ‘Pinot Noir’ (closed symbols), in vines (circles) and cuttings (squares). Stage 12, visible clusters; stage 15, separated clusters; stage 17, separated floral buds; stage 21, early bloom (10 % opened flowers); stage 25, late bloom (90 % opened flowers); and stage 27, fruit set. Ten inflorescences were used, each inflorescence sampling from a different vine or cutting. Data are the mean of ten plants per treatment. The standard errors were smaller than the symbols, and therefore are not shown.

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FIG. 3. Development of anthers in ‘Gewurztraminer’ (GW) cuttings: (A) stage 12, sporogenous cells; (B) stage 15 + 2 d, tetrads; (C) stage 15 + 8 d, young microspores; and (D) stage 17, bicellular pollen grains. BPG, Bicellular pollen grains; e, epidermis; E, endothecium; gc, generative cell; SC, sporogenous cells; t, tapetum; T, tetrads; vc, vegetative cell; YM, young microspores. Scale bars = 500 µm.

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FIG. 4. Development of female flower parts in ‘Gewurztraminer’ cuttings: (A) stage 12, sporogenous tissue; (B) stage 15, archespore; (C) stage 17, macrospore mother cell; and (D) stage 23, embryo sac. Arrows in C and D indicate starch grains. ES, Embryo sac; et, external tegument; f, funicle; it, internal tegument; MMC, macrospore mother cell; Nu, nucellus; Oc, ovarian cavity; ST, sporogenous tissue; Tg, tegument. Scale bars = 250 µm.

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Source: Annals of Botany 2005 95(6):943-948.