Qianghui No.2, a new gray jujube variety, was discovered in 2009 in Ruoqiang County, Henan Province as a naturally mutated bud variety of gray jujube introduced from Xinzheng. This variety has the advantages of large fruit size and high fruit setting rate. Good yield, can bear fruit in the same year of grafting. Entering the peak fruiting period in 3—4 years. The phenological period of this variety is budding in mid April, flowering in mid May, peak flowering in early June, fruiting in early June, and maturity in early October. The fruit is nearly circular, with a larger size and an average weight of 15.3 g per fruit. During the peak fruit season, the average yield per mu is 800~1000 kg (dried dates), the skin is reddish brown and the flesh is loose. Nuclear spindle shape. This variety has strong adaptability, is easy to manage, and has excellent quality. In 2009, a superior single jujube plant was discovered at the jujube base of the populus euphratica forest management station in Ruoqiang County. The jujube fruit was relatively large, nearly circular, and the first-class fruit rate was over 75%. After 2010, technicians modified multiple plants of this variety in the jujube orchard through high grafting and seed replacement. After observing and analyzing the characteristics and quality of the variety, it was officially determined as an excellent strain and named Qianghui No.2. In 2015, it was recognized by the Autonomous Region Forest Variety Approval Committee as New R-SV-ZJ-004-2015 and officially named Qianghui No.2. In 2020, it was approved by the Autonomous Region Forest Variety Approval Committee as New S-SV-ZJ-002-2020. The Qianghui No.2 tree is tall, with a gray brown dry skin and a rough surface, forming a block like longitudinal crack. Jujube head is reddish brown, with large skin pores and an oval shape. Acupuncture is underdeveloped. The curvature of the secondary branch resembles a Z-shaped shape, with an internode length of 6.35 cm. Qianghui No.2 jujube has a cylindrical shape and a continuous fruiting age of about 10 years; 4~5 fresh jujube hanging per share, with 8~21 fresh jujube leaves per hanging, an average of 13.4 fresh jujube leaves per hanging, and an average length of 19.8 cm for jujube hanging; The first section shows an inflorescence, with the largest flower volume and the easiest fruit setting in sections 2~8. Jujube trees begin to fall off in late October.Qianghui No.2 has oval shaped and glossy leaves, with an average length of 5.4 cm and a width of 2.6 cm, and a leaf area of 10.7cm2. The leaf tip is blunt and pointed, the leaf base is nearly circular, and the leaf edge has serrations.Qianghui No.2 has a large number of flowers, flat and round buds, with 5~20 flowers in each order. The pistil stigma is 2-lobed, located in the center of the flower disc. It is light green, with 5 stamens. The flower disc is yellow, rich in nectar, and has a large amount of pollen. It belongs to the diurnal type. Qianghui No. 2 fruit is nearly circular, with a vertical diameter of 4.2 cm and a horizontal diameter of 3.3 cm. The average weight of a fresh fruit is 15.3 g. The top of the fruit is wide and round, with small stem depressions and moderate depth. The skin is reddish brown, and the fruit dots are small and not obvious. The flesh is thick, green and white, slightly dense in texture, sweet in taste. After drying, the flesh is dense, fragrant, elastic, and easy to recover under pressure. It is durable for storage and transportation. The drying rate is 61.4%, and the edible rate is 95.7%. The nucleus is spindle shaped, with a shallow nuclear pattern and no seed kernel. Qianghui No. 2 has a strong tree vigor, mainly bearing fruit from the biennial jujube head branches. It has an early fruiting age, entering the economic fruiting period in 3 years and the full fruiting period in 5 years. It has a high and stable yield. The fruit is evenly distributed, with good neatness, dense flesh, sweet taste, high drying rate, and excellent quality, making it an excellent variety for both drying and processing purposes. Qianghui 2 variety has strong adaptability, drought resistance, strong resistance, robust tree body, and is easy to manage.In Ruoqiang, Xinjiang, sprouting occurs in mid April, flowering begins in mid May, and peak flowering occurs in early June. Fruit sets begin in early June and ripens in mid October, with a fruit growth period of about 120 days.
PDF （）