紫长茄是南京市蔬菜研究所于1978年用苏长茄为母本,苏州牛角为父本杂交,对其后代进行单株、单果和单粒种子选择培育而成的优良品种。经过多年试验、示范证明,比当地主栽品种苏州牛角早熟、抗病、商品性好、适应性强、经济效益高。1986年通过南京市级鉴定,列为推广品种。 (一)紫长茄的主要特点 1.早熟、丰产。紫长茄为早熟品种,始花节位11～13节。露地地膜栽培,6月20日以前亩产量超过1000公斤,比苏州牛角增产 Purple Cotyledon is the Nanjing Institute of Vegetables in 1978 with Su Chang-long as the female parent, Suzhou horns as the male parent cross, the offspring of single plant, single fruit and single seed selection and breeding of fine varieties. After years of testing, the demonstration proves that it is more precocious than the local cultivated Suzhou horns, has good disease resistance, good commodity, strong adaptability and high economic benefits. In 1986 through the Nanjing municipal appraisal, as promotion varieties. (A) the main characteristics of purple longan 1. Early maturity, high yield. Purple Cotyledon is a precocious variety, beginning with 11 to 13 knots. Open field film cultivation, June 20 before the mu production more than 1,000 kg, higher than the Suzhou horn