Abstract:The new fresh edible passion fruit (Passiflora edulis f. flavicarpa) cultivar, Yami,was selected from selfing progeny of Huangjin cultivar. The parent (named H3) was selected from 48 passion fruit plants of Huangjin cultivar introduced from Taiwan, with traits of higher fruit weight, higher content of soluble solids and more flowers in summer compared to the other plants. The selfing was carried out in summer 2013 and 262 health seedlings were raised and transplanted into the field in 2014. After preliminary screening, a total of eight plants were selected in 2014, one superior plant (named 05) with high average single fruit weight, high edible rate, high soluble solid contents, rich aroma, delicious flavor and high yield was selected finally after 2 years (2015~2016) of observations. The asexual progeny of the superior plant had stable genetic traits was confirmed by multi-year multi-location tests from 2017 to 2021. It was evaluated by experts’ on-site evaluation on 29 August 2022 and its name was changed from Tangmi toYami based on the expert opinion. Yami was certified as a provincial cultivar on 26 December 2023 in Fujian province. The veins are shaped cylindrical and colored green. The leaves are papery and green, with three leaf shapes: unlobed, two-lobed, palmately three-lobed leave. The flowers are hermaphroditic and include three bracts, five sepals, five petals, five stamens, three floral column and one ovary. The shape of fruit is nearly round and the average weight of single fruit is 95.79 g. Ripe Yami fruit has yellow skin and surfaces white spots. The pulp is yellow to orange yellow, juicy, with sour and sweet taste and strong aroma. The pulp isn't easily detached from the funicle. The edible rate is 50.87%, the soluble solid content is 18.50%, the total sugar content is 12.7 g·100g-1, the total acid content is 16.97 g·kg-1, the vitamin C content is 14.1 mg·100g-1, the total amino acids content is 18.0 g·kg-1, approximately. The fruit growth period of Yami is 60~100 days, and the harvest time is mainly concentrated from mid-late July to early September, and early October to mid-late November in Fujian planting areas. Yami has strong growth vigor and highly self-compatible, and is not only resistant to anthracnose and viruses, but also more tolerant to high temperature than its parent. It has the advantages of relatively high and stable yield that the average yield is 1240.0 kg per 666.7 m2, and wide adaptability which is suitable for planting in yellow passion fruit producing regions such as Fujian, Guangxi, Yunnan and other areas. The area which there is no frost damage in winter was more suitable for its cultivation compared to the frost regions. The one-year cropping pattern is applicable to the regions with winter frost. Orchards were fertilized with organic fertilizer 2~3 months before planting. High ridge cultivation is effective for base rot disease. The planting density was determined according to the situation of the orchard and the type of scaffolding style, row spacing and plant spacing were 3 m, 1.0~2.0 m, respectively. 1~ 3 main vines can be left and axillary buds on the rootstock should be erased in time after planting. In addition, tip buds should be removed timely to promote branching.
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