Abstract: Chaenomeles cathayensis‘Xingguang’is an excellent clone selected through single plant selection,cutting propagation,comparative test,regional test and production test. It is a deciduous shrub or small tree.The plant features erect branches with degenerated thorns,while its lanceolate leaves display bristle-like serrations along the margins. Mostly 3-5 flowersclusters on the two-year-old branches,pink,ornamental flowers,flowering period 3-5 months.The fruit is nearly cylindrical,measuring 10-12 cm in length and 7-9cm in width. When ripe,it turns golden yellow with a fragrant aroma,making it an ideal ornamental plant. The fruiting period spans from June to October（with the ornamental season lasting September to October）. During peak production years（every 8 years）,yields reach 15 100-25 200 kg · hm^-2. Its delicate flesh is rich in sugars（38.4388 mg · g^-1）,organic acids,dietary fiber（439.554 mg · g^-1）,tannins（4.2413 mg · g^-1）,protein（15.7521 mg · g^-1）,amino acids,vitamins,and flavonoids,perfect for traditional dishes like fruit wine,enzyme supplements,and preserved fruits. It likeslight,cool and humid climates,and is suitable for planting in areas with altitude of 1 700-2 200 meters where annual average temperatures range between 12-15 ℃ and annual precipitation reaches 900-1 100 mm.

Key words: Chaenomeles cathayensis, superior clones