浙江农业学报 ›› 2022, Vol. 34 ›› Issue (11): 2319-2328.DOI: 10.3969/j.issn.1004-1524.2022.11.01

• 作物科学 • 上一篇    下一篇

浙江省马铃薯种质资源的表型鉴定与多样性分析

沈升法(), 项超, 李兵, 罗志高, 吴列洪()   

  1. 浙江省农业科学院 作物与核技术利用研究所,浙江 杭州 310021
  • 收稿日期:2022-03-09 出版日期:2022-11-25 发布日期:2022-11-29
  • 通讯作者: 吴列洪
  • 作者简介:*吴列洪,E-mail: zwsgsza@zaas.ac.cn
    沈升法(1969—),男,浙江富阳人,学士,副研究员,从事薯类育种与栽培研究。E-mail:3398809937@qq.com
  • 基金资助:
    浙江省农业新品种选育重大科技专项(2021C02064-1);浙江省物种品种资源保护费项目(111721301354052231-1-4)

Phenotypic identification and diversity analysis of potato germplasm resources in Zhejiang Province, China

SHEN Shengfa(), XIANG Chao, LI Bing, LUO Zhigao, WU Liehong()   

  1. Institute of Crops and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021,China
  • Received:2022-03-09 Online:2022-11-25 Published:2022-11-29
  • Contact: WU Liehong

摘要:

为了解浙江省马铃薯地方种质资源特征特性,鉴定并筛选出优异种质,2019—2020年对浙江省第三次全国农作物种质资源普查与收集行动中征集的95份马铃薯种质资源的13个质量性状和6个数量性状进行了调查和分析。结果表明,浙江省马铃薯地方种质资源的表型遗传多样性比较丰富。质量性状的Shannon-Wiener多样性指数为0.380~1.686,其中,病毒病的多样性指数最高,说明收集的种质资源存在不同程度的病毒性退化;食味的多样性指数最低,食味优的种质有88份,占资源数的92.63%。10个形态性状的多样性指数平均值为1.079,其中薯形、肉色和花冠色3个性状的遗传多样性最为丰富。6个数量性状的多样性指数均高,平均值为2.84,块茎产量、主茎数尤为突出。块茎干物质含量在18.1%~25.8%,其中干物质含量 ≥ 20%的种质有73份,占资源数的76.84%。95份种质资源按照块茎形态特征可归类为小马铃薯种质62份、中大马铃薯种质21份和彩色马铃薯12份。小马铃薯种质黄皮黄肉,干物质含量较高,蒸煮食味优。根据种质的表型特异性,筛选出优异种质9份,可用于生产开发和育种利用。

关键词: 马铃薯, 种质资源, 表型多样性

Abstract:

To understand the characteristics of local potato germplasm resources and screen out excellent materials in Zhejiang Province, 13 qualitative traits and 6 quantitative traits of 95 potato germplasm resources collected in the Third National Agricultural Germplasm Census and Collection Action of Zhejiang Province were investigated and analyzed in 2019-2020. The results showed that the phenotypic genetic diversity of the local germplasm resources was relatively rich. Shannon-Wiener diversity index of quality traits ranged from 0.380 to 1.686, of which the diversity index of viral diseases was the highest, indicating that these germplasm resources were with different degrees of viral degradation. The diversity index of flavor was the lowest, and there were 88 germplasm resources with good flavor, accounting for 92.63%. The average diversity index of the 10 morphological traits was 1.079, of which three traits of tuber shape, flesh color and corolla color showed the most abundant diversity. The diversity indexes of the six quantitative traits were high, with an average of 2.84, and the tuber yield and number of main stems were particularly prominent. The tuber dry matter contents of the germplasm resources varied from 18.1% to 25.8%, of which 73 resources with dry matter content ≥ 20%, accounting for 76.84%. The 95 germplasm resources could be classified as small potato germplasm (62 resources), medium and large potato germplasm (21 resources) and colored potato (12 resources). All small potato resources were yellow tuber skin and flesh, high dry matter content and good cooking flavor. Nine excellent resources were screened and could be used for production and breeding.

Key words: potato, germplasm, phenotypic diversity

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