it should be in the works. The juju genome was fairly recently sequenced, so it might take sometime.
the study is a bit long, if not intense http://www.nature.com/articles/ncomms6315
so below are some excerpts i lifted from the whole shebang which you might want to glance over.
seems like jujus are closer to peaches than apples, but splicing to other rosaceae members was not ruled out. Blackberries and rasps included!
"The jujube has a range of botanical and horticultural features6 that gives it great potential in fruit tree molecular improvement, human health protection, and the economical development and ecological restoration of arid region. It is well-adapted to various biotic and abiotic stresses, especially drought and salinity (Supplementary Table 1), and is considered an ideal cash crop for arid and semi-arid areas where common fruits and grain/oil crops do not grow well. Its fruit is an excellent source of vitamin C (higher than the well-known vitamin C-rich orange and kiwifruit) and sugar (25ā30%, twice as high as most common fruits and even higher than sugarcane and sugar beet)7 (Supplementary Table 2). The jujube also has a very easy and quick flower bud differentiation (only ~7 days), a long flowering season lasting for 2 months, a very short period of ~6 months from planting or sowing to yielding fruits, and a very long lifecycle, even more than 1,000 productive years3,6Sugar and vitamin C contents are the most common indicators of fruit quality, pruning is the most labour-consuming work of orchard management, earlier fruiting and more productive years are what farmers expect, and drought and salinity are the main abiotic stresses for fruit growing. Therefore, the aforementioned properties of the jujube are of great importance to the modern fruit production characterized by fast payback, easy management and labour-saving. In addition, the jujube is a close relative of Rosaceae (both belonging to the Rosales order in the widely accepted molecular taxonomy system of Angiosperm8,9), the most important fruit-producing family containing a large number of leading deciduous fruit species such as apple (Malus domestica), pear (Pyrus bretschneideri), peach (Prunus persica), strawberry (Fragaria vesca) and Rubus. Consequently, the jujube could be a rich source of genes for the molecular improvement of fruit trees, and a fundamental understanding of the genetics of the jujube is crucial.
Of the 32,808 protein-coding genes (13,843 gene families) in the jujube genome, 1,043 gene families are specific to jujube, and the largest number of gene clusters (11,930 families) is shared with peach (Fig. 4a), indicating a closer relationship between jujube and peach than between jujube and the other species analyzed."
and hereās the part you might like bestā
"The genes responding to osmotic stress are expressed at very high levels at all stages of fruit development, which is consistent with jujubeās salt tolerance and drought resistance (Supplementary Table 25). Chitinases are pathogenesis related proteins that are induced by biotic and abiotic stress in plants24,25. The high expression of chitinases in jujube shoots may contribute to its high stress tolerance (Supplementary Table 26).
There are 13 genes encoding homologues of autophagy-related protein 9 in the jujube genome, and only 1ā2 in the other 6 related species of Rosales (Supplementary Table 27). Autophagy has important roles in various cellular functions26. Specifically, in immunity, the stimulation of autophagy in infected cells helps the cells to degrade and eliminate intracellular pathogens. Therefore, autophagy may play important roles in jujubeās defence responses."
