Twv 53 11.Pdf
E International Union for the Protection of New Varieties of Plants Technical Working Party for Vegetables TWV/53/11 Fifty-Third Session Original: English Seoul, Republic of Korea, May 20 to 24, 2019 Date: May 15, 2019 EXPERIENCES WITH NEW TYPES AND SPECIES Document prepared by an expert from China Disclaimer: this document does not represent UPOV policies or guidance The annex to this document contains a copy of a presentation on the “Introduction of Ipomoea aquatica and development of TG in China”, to be made at the fifty-third session of the Technical Working Party for Vegetables (TWV). [Annex follows] TWV/53/11 ANNEX Introduction of Ipomoea aquatica and Development of TG in China Shanghai Sub-center for DUS Tests Ministry of Agriculture and Rural Affairs, PRC Scientific Classification Order: Solanales Family: Convolvulaceae Genus: Ipomoea Species: Ipomoea aquatica UPOV Code: IPOMO_AQU Common Names: Water spinach, Water morning glory, Water convolvulus, Chinese water spinach, Kangkong, Swamp cabbage, Chinese spinach, Chinese watercress, Chinese convolvulus, etc. 1 TWV/53/11 Annex, page 2 Botanical Description Ipomoea aquatica is an aquatic or semi aquatic plant, trailing or floating, herbaceous, sometimes annual or perennial. It is the short- day plant and cross-pollinated plant. Stems: terete, hollow, rooting at nodes. Leaves: petiole 3-14 cm, glabrous; leaf blade variable, ovate, ovate-lanceolate, oblong, or lanceolate, 3.5-17×0.9-8.5 cm, base cordate, sagittate or hastate, occasionally truncate, margin entire or undulate, apex acute or acuminate. (From the Flora of China) 2 Botanical Description Flowers: inflorescences 1-3(-5)-flowered, peduncle 1.5-9 cm; pedicel 1.5-5 cm; corolla white, pink, or lilac, with a darker center, funnelform, 3.5-5 cm; stamens unequal; ovary conical.
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