College of Horticulture，Hebei Agricultural University，Key Laboratory of Vegetable Germplasm Enhancement and Utilization of Hebei，Collaborative Innovation Center of Vegetable Industry in Hebei，Baoding 071000，Hebei，China
Abstract：This experiment took 17 rootstocks of melon type and 4 rootstocks of pumpkin type commonly used in production as test material；and carried out evaluation on morphology cold resistance in seed germination stage and seedling stage．‘Boyang 61’ was used as scion and grafted with pumpkin type rootstocks‘Yinguang’and‘Zhuangshi’and melon type rootstocks‘Hongfu No.5’and‘Cuiyu’screened out with different cold resistance．Then the effects of low temperature stress on growth of grafted seedlings with different rootstocks were studied．The results indicated that‘Yinguang’，‘Jianjiang’and‘Tianxiang No.1’showed stronger cold resistance in seed germination stage，‘Yinguang’，‘Hongfu No.5’showed stronger cold tolerance than the other materials at seedling stage．Grafting combinations：‘Yinguang/Boyang 61’and‘Hongfu No.5/Boyang 61’showed stronger cold tolerance．While，grafting combination‘Yinguang/Boyang 61’had the best cold resistance．Therefore，‘Yinguang’could be used as a pumpkin type rootstock for high yielding melon in low temperature season for facility cultivation．‘Hongfu No.5’could be applied as a melon type rootstock in facility cultivation for high quality product during low temperature season．
张芊，乜兰春，赵文圣，方思雨，赵佳腾，郭克东. 甜瓜耐冷砧木筛选及嫁接苗耐冷性评价[J]. 中国蔬菜, 2022, 1(7): 85-91.
ZHANG Qian，NIE Lanchun，ZHAO Wensheng，FANG Siyu，ZHAO Jiateng，GUO Kedong. Screening of Melon Col d Resistant Rootstocks and Evaluation on Cold Tolerance of Grafted Seedlings. China Vegetables, 2022, 1(7): 85-91.
