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乌紫杨梅是从浙江省象山县的自然实生资源中选出的一个优质、大果、早熟杨梅新品系。乌紫杨梅果实正圆形,果面紫黑色,单果重为23.49g;总糖、可溶性固形物和花色苷含量分别为83.6mg/g、13.26%、0.50mg/g,显著高于东魁杨梅;总酸为0.92%,比东魁略低;成熟期为6月15-24日,比东魁杨梅早7～10d。RAPD分析显示,乌紫杨梅新品系母本树与乌紫杨梅嫁接后代(嫁接第1代、第2代、第3代、第4代)的相似性极高,为0.94-0.98;他们之间的遗传距离也最小。而乌紫杨梅及嫁接后代与东魁、炭梅、水梅的之间相似性较低、遗传距离也相距较远。上述结果表明乌紫杨梅是一个不同于其他杨梅品种、后代表现稳定的大果、优质杨梅新品系。
Wuxue red bayberry is a new line of high-quality, big-fruit and early-maturing bayberry that is selected from the natural resources in Xiangshan County, Zhejiang Province. Umbilicaria plum fruit is round, purple fruit surface, fruit weight is 23.49g; total sugar, soluble solids and anthocyanin content were 83.6mg / g, 13.26%, 0.50mg / g, ; The total acid was 0.92%, slightly lower than that of Dongkui; the mature period was June 15-24, which was 7-10 days earlier than that of Dongkui Bayberry. RAPD analysis showed that there was a high similarity (0.94-0.98) for the grafted offspring of the new female parent tree of Uvaria liliana and the parents of the Uvaria lutea (grafted 1st, 2nd, 3rd, 4th generation); between them The genetic distance is also the smallest. However, the similarities between Uighur red plum, grafted offspring and Dongkui, charcoal and plum were lower and the genetic distances were also far apart. The above results show that Ubud is a different from other varieties of Myrica rubra, the offspring of stable large fruit, high-quality new bayberry.