Abstract: ‘Longhuihong’，a new navel orange cultivar，was selected from‘Newhall’navel orange.
Its fruit traits are as follows：Oval shape，smooth and orange red peel，edible rate 73.7%–78.3%，crisp
and sweet flesh，single fruit weight 280–346 g，juice TSS 12.2%–14.2%，TA 0.47%–0.58%，vitamin
C 0.47–0.52 mg · mL-1. It began fruiting in 3rd year after planting and had an average yield of 9.5 kg per
tree，21.5 kg per tree in 4th year，and 39.5 kg per tree in 5th year，accounted for 29.63 t · hm-2.

Key words: orange, bud mutation, cultivar