PROBLEM TO BE SOLVED: To provide long-day onion plants, capable of producing onion bulbs having 'high soluble solids' combined with a 'sweet taste' as a result of low pungency, and such plants, bulbs and seeds.SOLUTION: The present invention relates to plants of the species Allium cepa (onion) having combinations of at least two characteristics selected from 'high soluble solids content', 'low pungency' (LP) and/or 'long storage' (LS) essentially without significant quality loss during storage (e.g., no significant increase in pungency and/or no significant reduction in soluble solid content) to create variable F2 populations by selfing of F1 plants and crossbreeding.【課題】低い辛味の結果としての「甘い味」と併せて「高い可溶性固形物」を含むタマネギ球根を産生できる長日タマネギ植物、並びに、このような植物、球根及び種子の提供。【解決手段】交雑，Ｆ１植物の自家受粉による，可変性のＦ２個体群を創造する「高い可溶性固形物含量」、「低い辛味」（ＬＰ）及び／又は貯蔵中の有意な品質の低下を実質的に伴うことのない（例えば、辛味の有意な増加及び／又は可溶性固形物含量の有意な減少がない）「長期貯蔵」（ＬＳ）から選択される少なくとも２つの特徴の組合せを有するAllium cepa種（タマネギ）の植物。【選択図】なし
