Kinnow Mandarin

UCR reports Kinnow as a King tangor × Willowleaf mandarin hybrid developed at Riverside by H. B. Frost in 1915 and released in 1935. This is the collection page’s reported historical parentage.^⁠[1]

UCR describes medium-sized, modestly flattened fruit with a thin, relatively adherent yellow-orange rind, juicy orange flesh, and numerous seeds. Its account gives 9–10 segments and notes little puffing while fruit remains on the tree; the Riverside collection season is January–March.^⁠[1]

The UCR account describes vigorous, upright growth, largely thornless branches, and strong alternate bearing. Its historical description calls Kinnow cold-resistant but gives no measured minimum temperature.^⁠[1]

A 2021–22 survey of Kinnow-labelled fruit from 75 orchards in Sargodha, Bhalwal, and Kot Momin, Pakistan, found quality variation by location, orchard category, and canopy position. The study names no clone, accession, or rootstock, so its chemistry and other measurements are regional study results, not universal Kinnow values.^⁠[3]

A 2020 review says Kinnow has few seeds adherent to 9–10 segments, while its Table 1 separately lists 19.40 ± 9.28 seeds without identifying the sample design or accession. UCR’s CRC 3021 account describes a seeded fruit with numerous seeds. These source-specific reports do not establish a single clone-wide seed count.^⁠[5]⁠[1]

In a 2017 video, the presenter describes one Kinnow-labelled tree with a heavy apparent fruit set and estimates it is about 3 feet tall with probably around 100 mandarins. This is a single-tree report, not an annual-yield measurement; location, age, rootstock, and exact observation date are unstated.^⁠[6]