马铃薯营养品质变异特征及优异品系发掘
作者:
作者单位:

1.福建省农业科学院作物研究所/农业部南方薯类科学观测实验站;2.周宁县农业农村局

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基金项目:

福建省省属公益类科研院所基本科研专项(2020R1031004);福建省种业创新与产业化工程(zycxny2021005);固原市科技研发类计划项目(2021GYKYF041)


Features and Variations of Potato Nutritional Components and Identification of Elite High-Quality Lines
Author:
Affiliation:

1.The Crop Institute, Fujian Academy of Agricultural Sciences/Scientific Observing and Experimental Station of Tuber and Root Crops in South China, Ministry of Agriculture, Fuzhou, Fujian;2.Agriculture and rural Bureau of Zhouning County, Fujian Zhouning

Fund Project:

Basic Scientific Research Projects of Fujian Provincial Public Welfare Research Institutes(2020R1031004);Fujian Seed Industry Innovation and Industrialization Project(zycxny2021005);Guyuan Science and Technology Research and Development Program(2021GYKYF041)

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    摘要:

    选育营养品质优良的马铃薯品种有利于加工行业的发展和人们日常膳食营养的丰富,也有利于供给侧种植结构的调整。蛋白质、维生素C和钾是马铃薯的重要营养品质性状。本研究以118份马铃薯后代品系为材料,研究了马铃薯蛋白质、维生素C和钾含量的遗传变异特征,以及3个品质性状间的相关性,并综合应用聚类分析和二维象限法进行优质品系发掘。分析表明,蛋白质、维生素C和钾含量的变异系数分别为16.34%、26.01%和14.19%,遗传多样性指数分别为1.9744、1.9952和2.0411,显示这3个品质性状具有较广泛的遗传基础。相关性分析发现,马铃薯块茎蛋白质含量和钾含量呈极显著正相关。经聚类分析,可将118份品系分为4个类群,第Ⅰ类为低蛋白低维生素C低钾群体,第Ⅱ类为高维生素C低蛋白群体,第Ⅲ类为高蛋白高钾群体,第Ⅳ类为高维生素C高钾群体。在此基础上,应用二维象限分析筛选出20份兼具多个较高营养品质的马铃薯品系。本研究筛选出营养品质性状优良且适宜在福建省种植的马铃薯品种,为马铃薯高营养品质品种选育和品质形成基础研究提供有用材料。

    Abstract:

    Apart from facilitating the development of the potato processing industry and enriching the diets of people, breeding of potato varieties with good nutritional qualities also contributes to the adjustment of the national-wide planting structure. Protein, vitamin C and potassium (K) are important quality traits in potato. In this study, the genetic variation of protein, vitamin C and K and their interaction relationship in 118 potato breeding lines were assessed by cluster analysis and the two-dimensional quadrant method. The variable coefficient of protein, vitamin C and K content were 16.34%, 26.01% and 14.19%, respectively, and the genetic diversity index were 1.9744, 1.9952 and 2.0411, respectively. These indicated a broad genetic basis for protein, vitamin C and K content in this collection. The protein content was extremely significantly positively correlated with the K content in potatoes. The cluster analysis enabled the classification of 118 potato lines into four groups. The lines in groups I and II had lower protein content; the lines in group II had high vitamin C content; the lines in group III had the highest contents of protein and K; the lines in group IV had the highest vitamin C content. Twenty lines showing multiple high nutritional qualities were identified by two-dimensional quadrant analysis. Gained from these results, it is possible to identify potato varieties with high nutrition and suitable for planting in Fujian Province of P. R. China. This study might provide useful materials breeding and deciphering the mechanism of elite potato varieties with high nutritional value.

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  • 收稿日期:2022-09-23
  • 最后修改日期:2022-11-02
  • 录用日期:2022-11-11
  • 在线发布日期: 2022-11-17
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