Deyou No.4

Deyou No. 4 (C. oleifera) is a new variety authorized by the State Forestry and Grassland Administration of China in 2021, the variety right number: 20210535, originated and bred by Yuan Deyi of Central South University of Forestry and Technology.  Plant1.5~1.7m tall, crown round-headed. Leaves flat, oblong, apex acuminate, margin densely serrated, 7.6cm long and 4.1cmwide. lowFers solitary, bisexual, white, diameter 8-10cm, with 9 petals. The flowering period is from mid-to-late November to mid-to-late December; the capsule is nearly round, with a hemp brown skin, with an average fruit weight of 27.13 g, pericarp The thickness is 2.12mm, the fresh seed rate is 49.88%, the dry seed oil rate is 30.56%, and the fruit ripening period is late October.

德油4号是2021年国家林草局授权的新品种，【品种权号】20210535，【培育人】袁德义，【品种权人】中南林业科技大学。【品种特性】树高1.5~1.7m，株形较矮壮开张，树冠圆头型，叶片平展，长椭圆形，先端渐尖或长尾尖，叶缘密生细锯齿，叶长7.6cm，叶宽4.1cm；花单生，两性花，白色，花径8~10cm，花瓣多为9枚，花期11月中下至12月中下旬；蒴果，近圆形，果皮麻褐色，平均果重为27.13 g，果皮厚2.12mm，鲜出籽率49.88%，干籽出油率30.56%，果熟期10月下旬。其特异性主要表现为树形矮壮开张，果皮麻褐色，不感炭疽病，果较大，皮薄，出籽率高，油脂品质好；培育人连续3年对其嫁接繁殖苗、高接换冠树进行观测研究，发现无性系群体内个体间的特征均表现一致，枝、叶、花、果等性状与母株相同，一致性很好；这也说明了‘德油4号’无性系的稳定性较好。