Provided are a novel plant varieties of red lettuce and yellow lettuce, and seeds thereof. The novel plant varieties of red lettuce and yellow lettuce are obtained by undergoing the following steps: inducing interspecific hybrid among lettuce and red romaine as well as among lettuce and chicory so as to acquire various types of plants having red color and selecting entities and lineage from the outcome of the interspecific hybrid. The novel plant varieties of the present invention come in red and yellow colors, and is suitable to be used for wrapping, juices, salads, or kimchi. In addition, the novel plant varieties can be obtained by conducting repetitive systemic purification, self-incompatibility tests, fertilizability tests, and regional adaptation tests using plants in superior lineage.COPYRIGHT KIPO 2017본 발명은 양상추와 홍로메인과 양상추와 치커리로 종간잡종을 유기여 이로부터 빨간색을 띤 여러 개체의 식물체를 얻는 단계와 상기 종간잡종으로부터 계통 및 개체를 선발하여 얻은 본 발명 신품종 식물 홍양상추와 황양상추는 빨간색 및 노란색을 띠며 쌈채소용, 녹즙용, 샐러드용 또는 김치용으로도 적합하고 우수계통의 식물체를 계통순화와 자가불화합검정, 종자생상력 검정 및 지역적응 시험을 반복적인 수행을 통하여 본 발명 신규한 홍양상추와 황양상추 식물 및 그 종자를 제공하는 뛰어난 효과가 있다.
