青海地区不同品种(系)马铃薯块茎褐变规律的研究  

Study on the Browning Regularity of Potato Tubers of Different Varieties(lines)in Qinghai Province

作　　者：张璐 纳添仓 叶广继[2,3,4,5] ZHANG Lu;NA Tian-cang;YE Guang-ji(Shangluo Shangzhou District Agricultural Product Quality Safety Station,Shangluo Shanxi 726000,China;Qinghai University,Academy of Agriculture and Forestry Sciences,Xining Qinghai 810016,China;State key Laboratory of Plateau Ecology and Agriculture,Xining Qinghai 810016,China;Key Laboratory of Qinghai-Tibetan Plateau Biotechnology of Ministry of Education,Xining Qinghai 810016,China;Key Laboratory of Potato Breeding of Qinghai,Xining Qinghai 810016,China)

机构地区：[1]商洛市商州区农产品质量安全站,陕西商洛726000 [2]青海大学青海省农林科学院,青海西宁810016 [3]青海大学省部共建三江源生态与高原农牧业国家重点实验室,青海西宁810016 [4]青藏高原生物技术教育部重点实验室,青海西宁810016 [5]青海省马铃薯育种重点实验室,青海西宁810016

出　　处：《青海农林科技》2022年第4期76-81,共6页Science and Technology of Qinghai Agriculture and Forestry

基　　金：现代农业产业技术体系(CARS-09);专用型马铃薯产业高质量发展关键技术研发与示范(2019-NK-A1)。

摘　　要：为了比较马铃薯品种(系)间的褐变差异性,测定了青海16个马铃薯种植品种(系)的PPO活性,以及块茎切片暴露在空气中的亮度值L^(*)随时间的变化。结果发现:不同品种马铃薯块茎的PPO活性存在很大差异,PPO活性最高的种植材料Q072625比最低的D0602-10 PPO活性高119.20%;不同品种(系)马铃薯块茎切片的褐变亮度值L^(*)随时间变化也具有规律性,陇薯6号的L^(*)值变化率最大,L0227-18与11-19-4的L^(*)值变化率最小;且PPO活性与L^(*)值变化率没有一致性关系。In order to compare the Browning differences among potato varieties(lines),the PPO activity of 16 potato cultivars in qinghai and the change of the luminance value L^(*)of tuber slices exposed to air with time were measured.The results showed that there were significant differences in PPO activity among different varieties(lines)of potato tubers.The planting material Q072,625 with the highest PPO activity was 119.20%higher than D0602-10 with the lowest PPO activity;The Browning brightness value L^(*)of potato tuber slices of different varietiess(lines)also was changed regularly with time.The change rate of L^(*)value of Longshu 6 was the highest,while the change rate of L^(*)value of 11-19-4 and L0227-18 was small.There was no consistent relationship between PPO activity and L^(*)change rate.

关 键 词：马铃薯 褐变 PPO活性 亮度值L^(*) 

分 类 号：S532[农业科学—作物学]