马铃薯新品种‘定薯4号’的选育

Selection and Breeding of New Potato Variety 'Dingshu 4'

‘定薯4号’是定西市农业科学研究院以‘定薯1号’为母本,‘陇薯5号’为父本,通过有性杂交系统选育而成,2016年通过甘肃省品种审定委员会审定。该品种为晚熟鲜薯食用及淀粉加工型品种,生育期114 d左右。薯块扁圆形,薯皮黄色略粗,薯肉黄色,芽眼少而浅呈浅红色。薯块干物质含量28.40%,淀粉含量20.22%,维生素C含量16.60 mg/100g,粗蛋白含量2.22%,还原糖含量0.18%。中抗晚疫病。干旱地产量在1 650 kg/667m2以上,适宜在甘肃省干旱、半干旱、二阴区及其他相似生态条件区域种植。

'Dingshu 4' was developed from a cross between 'Dingshu 1' as female and 'Longshu 5' as male parent made by Dingxi Academy of Agricultural Sciences, and was approved for registration by the Gansu Crop Variety Committee in 2016. The growth duration of 'Dingshu 4' is about 114 days. It is late maturing and could be planted as table and starch processing potato. It has oblate shape tuber, rough skin, yellow skin and yellow flesh, and few shallow and pale red eyes. For this variety, dry matter content is 28.40%, starch content 20.22%, vitamin C 16.60 mg/100 g FW,crude protein 2.22%, and reducing sugar 0.18%. This variety is mid-resistant to late blight, and yield in rain-fed land is more than 1 650 kg/667m2. 'Dingshu 4' is suitable for planting in the arid, semi-arid and the area of high altitude with cloudy, cool and humid climates, and other areas with similar ecological conditions in Gansu Province.