This invention has the red leaf over sphere the whole joining which includes the core, it regards the joining sphere characteristic lettuce plant of rakuchiyuka sachivua kind. As for the red leaf in the core, the light ray whose wave length is shorter than 400nm does not exist and also the te is red, at that time, with growth environment of all period to observation period, the light ray of the wave length which is shorter than 400nm does not exist from seeding. Ratio with the anthocyanin and the chlorophyll, from 4 between 50, desirably is between 27 from 9. This invention regards also the descendant of the above-mentioned plant.本発明は、芯を含めた結球全体にわたって赤い葉を有する、ラクチュカ・サチヴァ種の結球性レタス植物に関する。芯における赤い葉は、波長が400nmより短い光線が存在しなくても赤く、その際、播種から観測時までの全期間の生育環境で、400nmより短い波長の光線が存在しない。アントシアニンとクロロフィルとの間の比率は、4から50の間、好ましくは9から27の間である。本発明は上記植物の子孫にも関する。
