文献类型： 外文期刊
作者： Morales, Alfredo 1 ; Ma, Peiyong 1 ; Jia, Zhaodong 1 ; Rodriguez, Dania 2 ; Vargas, Ivan Javier Pastrana 3 ; Ventura, Vaniert 2 ; Gonzalez, Jose Efrain 2 ; Portal, Orelvis 4 ; Diaz, Federico 6 ; Parrado Alvarez, Oscar 7 ; Cordero, Carina 8 ; Bian, Xiaofeng 1 ;
作者机构： 1.Jiangsu Acad Agr Sci JAAS, Inst Food Crops, Nanjing 210095, Peoples R China
2.Res Inst Trop Roots & Tuber Crops INIVIT, Santo Domingo 53000, Cuba
3.Univ Cordoba, Fac Agr Sci, Dept Agron Engn & Rural Dev, Carrera 6 77-305, Monteria 230002, Colombia
4.Univ Cent Marta Abreu Las Villas, Fac Ciencias Agr, Dept Biol, Santa Clara 54830, Cuba
5.Univ Cent Marta Abreu Las Villas, Fac Ciencias Agr, Ctr Invest Agr, Santa Clara 54830, Cuba
6.Int Potato Ctr CIP, Lima 15023, Peru
7.Univ Camaguey Ignacio Agramonte Loynaz, Fac Ciencias Agr, Dept Educ Agr, 94Q9H5G Carretera Cent, Camaguey 74650, Cuba
8.Ctr Invest Motilonia, Corp Colombiana Invest Agr AGROSAVIA, Km 5 via Becerril, Agustin Codazzi 202050, Colombia
关键词： sweet potato breeding; genetic gain; yield improvement; stress tolerance; phenotypic selection
期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）
ISSN： 2223-7747
年卷期： 2025 年 14 卷 13 期
页码：
收录情况： SCI
摘要： This study analyzed the genetic progress of sweet potato (Ipomoea batatas) breeding in Cuba over the past 50 years by field trials comparing traditional and improved varieties. Improved varieties significantly outperformed traditional ones in tuberous root yield, with an accumulated genetic gain of 0.20-0.37 t ha(-1) per year, translating to a 256% yield increase. Improved genotypes also exhibited enhanced pest tolerance: lower weevil (Cylas formicarius) infestation and reduced nematode (Meloidogyne incognita) reproduction rates. For viral diseases, 60% of improved varieties showed incidence rates below 10%, compared with 90% of traditional varieties exceeding this threshold. Under drought conditions, improved varieties showed tolerance, with Stress Susceptibility Indices (SSIs) of less than 0.8, while the traditional varieties were more susceptible (SSI > 1). Phenotypic stability analysis via GGE biplot confirmed the superior yield and adaptability of improved varieties across environments. These advances underscore the critical role of sweet potatoes breeding in Cuba, with improvements in yield, quality and resistance to biotic and abiotic stress, contributing to strengthening climate resilience and food security.
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