中熟淀粉加工型马铃薯新品种'川凉芋17'选育与应用前景OA

'Chuanliangyu 17'was developed through sexual hybridization using'Hongyun'as the female parent and the local Liangshan Prefecture variety'Buwu Yu'as the male parent,yielding seedling offspring.Following seedling generation,single-plant selection,line identification,comparative trials,joint evaluation trials of new potato varieties in Sichuan Province,along with resistance identification,quality testing,and DUS testing,the new potato variety was developed through a systematic breeding process.The developed'Chuanliangyu 17'is a medium-maturing variety with a growth period of 87 days.It exhibits vigorous growth,reaching a plant height of 56.8 cm with 2.6 main stems.Tubers are elongated oval-shaped,featuring red skin and yellow flesh with shallow eyes.Tuber setting is concentrated,with large and medium tubers accounting for 73.4%of the yield.It exhibits excellent quality with 24.51%dry matter,19.6%starch,and 0.17%reducing sugars,delivering good steamed taste.It demonstrates outstanding resistance:moderately resistant to potato late blight,highly resistant to mosaic virus and leafroll virus,and highly tolerant to waterlogging.In the 2020-2021 Sichuan provincial joint evaluation trials of new potato varieties across 15 locations,the average yield was 1 411 kg/667m2,representing a 11.75%increase over the control variety'Mira'.During production demonstrations,it demonstrated high and stable yields in early spring,winter,and main spring cropping seasons.'Chuanliangyu 17'exhibits excellent com-prehensive traits and is suitable for cultivation in early spring,main spring,and winter cropping seasons across Sichuan Province at elevations ranging from 800 to 3 300 m.