Abstract: ‘Xiasheng 6’is a novel F₁ hybrid cultivar of Luffa acutangula,resulting from the crossing between female parent pureline 2012DDD-1 and male parent pureline 2017RZ-30. This cultivar demonstrated vigorous vegetative growth and reached harvest maturity in mid-early maturity. Fruit morphological traits included short-club-shaped fruits（26.0-35.0 cm length,4.9-5.5 cm diameter,and 450.0-520.0 g weight）and shallow ribbing. Nutritional analysis revealed significantly elevated vitamin C （89.0 mg · kg^-1）,crude fiber（6.0 g · kg^-1）,soluble solids（59.0 g · kg^-1）,and protein（9.0 g · kg^-1） relative to the control,with a mildly sweet flavor and superior quality. Under Guangdong’s subtropical conditions,its heat tolerance enabled stable yields of 27 000-52 500 kg · hm^-2 across two cropping seasons.

Key words: Luffa acutangula, quality, vitamin C, cultivar