A new high-quality yellow passion fruit cultivar Yami

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 larger fruit size, higher content of soluble solids and more flowers in summer compared with the other plants. The selfing was made in the summer of 2013 and 262 health seedlings were obtained and transplanted into the field in 2014. After preliminary screening, a total of eight promising seedlings 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 finally selected after 2 years (2015—2016) of observations. The grafted trees of the superior plant showed stable genetic traits in the multisite trials from 2017 to 2021. It was evaluated by experts’on-site evaluation on 29 August , 2022 and it was named Yami. It was certified as a provincial cultivar on 26 December, 2023 in Fujian province. The vines were cylindrical shaped and colored green. The leaves were papery and green and had three shapes: unlobed, two-lobed, palmately three-lobed leave. The flowers were hermaphroditic and include three bracts, five sepals, five petals, five stamens, three floral column and one ovary. The shape of fruit was nearly round and the average weight of single fruit was 95.79 g. Ripe Yami fruit had yellow skin and with white spots. The pulp was yellow to orange yellow, juicy, with sour and sweet taste and strong aroma. The pulp was not easily detached from the funicle. The edible rate was 50.87%, the soluble solid content was 18.50%, the total sugar content was 12.7 g · 100 g- 1 , the total acid content was 16.97 g · kg- 1 , the vitamin C content was 14.1 mg · 100 g-1 , and the total amino acids content was 18.0 g · kg-1 . The fruit growth duration of Yami was 60-100 d, and the harvest time was mainly concentrated from mid-late July to early September, andearly October to mid-late November in Fujian planting areas. Yami had strong growth vigor and was highly self-compatible, and was not only resistant to anthracnose and viruses, but also highly tolerant to high temperature than its parent. It had the advantage of relatively high and stable yield and wide adaptability. It would be suitable for planting in yellow passion fruit producing regions such as Fujian, Guangxi, Yunnan and other areas. The one-year cropping pattern was applicable to the regions with winter frost. High ridge cultivation was effective for preventing base rot disease. The planting density was would be 3 m × (1.0-2.0) m.