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The features of postfloral nectar secretion were revealed through anatomical and histochemical approaches, transcriptome and metabolome analysis, pollination experiments, and field observations.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>A key role of stigmatic pollen germination in postfloral nectar induction was demonstrated as well as the ant attraction effect of the postfloral nectar. Unexpectedly, the secretion of postfloral nectar ceased before ovule fertilization, making it more like \u2018prefruit nectar\u2019 than \u2018fruit nectar\u2019 (generally referred to the postfloral nectar occurring on organs that used to be floral ovaries) since the ovaries had not yet become fruits.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>The clarification of pollen germination in postfloral nectar induction and the provoking thought to define postfloral nectar based on the fertilization status provide new insights into the understanding of postfloral nectar.<\/jats:p><\/jats:list-item>\n<\/jats:list><\/jats:p>","DOI":"10.1111\/nph.70318","type":"journal-article","created":{"date-parts":[[2025,6,19]],"date-time":"2025-06-19T03:04:40Z","timestamp":1750302280000},"page":"2442-2453","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Fruit nectar or prefruit nectar? Implication of the postfloral nectar of <i>Dendrobium chrysotoxum<\/i> (Orchidaceae)"],"prefix":"10.1111","volume":"247","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6996-0136","authenticated-orcid":false,"given":"Zongmin","family":"Mou","sequence":"first","affiliation":[{"name":"School of Ecology and Environmental Science Yunnan University  Kunming 650504 China"},{"name":"Biocontrol Engineering Research Center of Crop Disease and Pest Yunnan University  Kunming 650504 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fan","family":"Xiao","sequence":"additional","affiliation":[{"name":"School of Ecology and Environmental Science Yunnan University  Kunming 650504 China"},{"name":"Biocontrol Engineering Research Center of Crop Disease and Pest Yunnan University  Kunming 650504 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wen","family":"Yang","sequence":"additional","affiliation":[{"name":"School of Ecology and Environmental Science 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