6个马铃薯品种(系)在河北二季作区春秋两季的适应性评价

Adaptability Evaluation of Six Potato Varieties(Lines)Planted in Spring and Autumn in Hebei Double Cropping Region

近年来河北二季作区马铃薯产业快速发展,但生产上适宜当地种植的品种仍旧缺乏。为了筛选适宜河北二季作区春秋两季种植的马铃薯品种(系),选用6份早熟马铃薯品种(系)为研究材料,以‘费乌瑞它’为对照,进行春秋两季品种(系)适应性评价试验。不同参试品种(系)在不同季节种植适应性不同。春播马铃薯产量、商品薯产量和商品薯率均高于秋播马铃薯,春播马铃薯炭疽病和早疫病发病率总体高于秋播马铃薯,而秋播马铃薯晚疫病发病率高于春播马铃薯。春季种植‘石薯1号’和‘石薯2号’商品薯产量分别为3776和3464 kg/667m2,分别较对照增产12.38%和3.10%,‘石薯1号’早疫病抗性优于对照;两品种商品薯率、营养品质(干物质、淀粉和蛋白质)和抗病性(炭疽病和晚疫病)与对照水平相当,适宜在河北二季作区春季种植。秋季种植‘石薯1号’和‘20S-17’商品薯产量分别为1243和1002 kg/667m2,分别较对照增产29.34%和4.27%,两品种(系)早疫病抗病性和‘石薯1号’晚疫病抗病性优于对照,但是‘20S-17’晚疫病抗性与对照水平相当;两品种(系)商品薯率、营养品质(干物质、淀粉和蛋白质)与对照水平相当,适宜在河北二季作区秋季种植。

In recent years,the potato industry in the double cropping region of Hebei Province has developed rapidly,but there is still a lack of varieties suitable for local cultivation.In order to screen potato varieties(lines)suitable for planting in spring and autumn in the double cropping region of Hebei Province,six early maturing potato varieties(lines)were selected as the experimental materials,and'Favorita'was used as a control to evaluate the adaptability of potato varieties(lines)planted in spring and autumn.Different varieties(lines)had different adaptabilities in different seasons.The yield,marketable tuber yield and marketable tuber percentage of potato varieties(lines)planted in spring were higher than those planted in autumn.The incidence of anthracnose and early blight of potato varieties(lines)planted in spring were higher than those in autumn,but the late blight incidence of potato varieties(lines)planted in autumn was higher than those in spring.The marketable tuber yield of'Shishu 1'and'Shishu 2'planted in spring was 3776 and 3464 kg/667m2,respectively,which increased by 12.38%and 3.10%compared with the control.The early blight resistance of'Shishu 1'was better than that of the control.The marketable tuber percentage,dry matter content,starch content,protein content,and disease resistance(anthracnose and late blight)of'Shishu 1'and'Shishu 2'planted in spring had no significant difference compared with the control.They are suitable for planting in spring in the double cropping region of Hebei Province.The marketable tuber yield of'Shishu 1'and'20S 17'planted in autumn was 1243 and 1002 kg/667m2,respectively,which increased by 29.34%and 4.27%compared with the control.The early blight resistance of'Shishu 1'and'20S-17'planted in autumn was better than that of the control.The late blight resistance of'Shishu 1'planted in autumn was better than that of the control,but'20S-17'had no significant difference compared with the control.The marketable tuber percentage,dry matter content,starch content,and protein content of'Shishu 1'and'20S-17'planted in autumn had no significant difference compared with the control.The two varieties are suitable for planting in autumn in the double cropping region of Hebei Province.