南方冬作区马铃薯高产及抗晚疫病品种筛选

    Screening of potato cultivars for high yield and late blight resisitance in the winter cropping areas of southern china

    • 摘要: 为筛选出适宜福建省闽北地区冬作的优质抗病马铃薯品种,以费乌瑞它为对照,对13个不同育种单位的优质马铃薯品种为试验材料,开展品种产量及晚疫病评价。结果表明:闽薯2号、沃土5号、闽薯5号、闽薯12号、闽龙薯1号产量分别为58 739、51 235、50 899、49 191、48 074 kg·hm−2,比费乌瑞它(CK)分别增产 23.55%、7.77%、7.06%、3.47%、1.12%。晚疫病室内离体接种鉴定结果表明,对2个晚疫病病原菌群体表现抗性以上的品种有南中105、闽薯2号、云薯116、S15-603、闽薯12号、闽龙薯1号。综合产量与抗病性,闽薯2号、闽薯12号、闽龙薯1号综合农艺性状优异,适合南方冬作生态气候条件,可作为南方冬作区主栽品种进行示范推广。

       

      Abstract: To identify high-yielding, high-quality and late blight-resistant potato cultivars suitable for winter production in northern Fujian Province, China, 13 potato cultivars developed by different breeding programs were evaluated for yield and resistance to late blight, with Favorita used as the control(CK). The results showed that Minshu 2, Wotu 5, Minshu 5, Minshu 12 and Minlongshu 1 produced yields of 58,739, 51,235, 50,899, 49,191 and 48,074 kg·hm−2, respectively, representing increases of 23.55%, 7.77%, 7.06%, 3.47% and 1.12% over Favorita(CK). Detached-leaf inoculation assays for late blight resistance showed that Nanzhong 105, Minshu 2, Yunshu 116, S15-603, Minshu 12 and Minlongshu 1 were resistant to both Phytophthora infestans populations tested. Considering both yield performance and late blight resistance, Minshu 2, Minshu 12 and Minlongshu 1 exhibited superior overall agronomic performance and were well suited to the climatic conditions of winter cropping in southern China. These cultivars therefore have good potential for demonstration and wider cultivation in winter potato-growing regions of southern China.

       

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