Bibliographic citations
Ramírez, H., (2020). Severidad de Peronospora variabilis Gaum en cinco variedades de Chenopodium Quinoa Willd. en condiciones de La Molina [Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/4438
Ramírez, H., Severidad de Peronospora variabilis Gaum en cinco variedades de Chenopodium Quinoa Willd. en condiciones de La Molina []. PE: Universidad Nacional Agraria La Molina; 2020. https://hdl.handle.net/20.500.12996/4438
@misc{sunedu/3014276,
title = "Severidad de Peronospora variabilis Gaum en cinco variedades de Chenopodium Quinoa Willd. en condiciones de La Molina",
author = "Ramírez Maguiña, Héctor Andrés",
publisher = "Universidad Nacional Agraria La Molina",
year = "2020"
}
Downy mildew, caused by Peronospora variabilis, is the most severe disease of quinoa (Chenopodium quinoa). The present work studied the behavior of five cultivars of quinoa to the natural infection of downy mildew, under field conditions in Lima, Perú. The treatments consisted of five commercial varieties of quinoa: Amarilla de Maranganí, Pasankalla, Negra Collana, Salcedo and Altiplano. These varieties were sown in a Completely Random Block Design with five replications. The response variables were: yield, plant height, Area Under the Disease Progress Curve (AUDPC), protein content, weight of thousand grains and grain size. These were subjected to an Analysis of Variance and a Tukey test with 0.05 significance. On the other hand, the Pearson's correlation coefficient was found, between the AUDPC and the other variables. The results indicated significant differences in all the response variables. The Amarilla de Maranganí cultivar showed the best production and less severity of downy mildew, with average yield values of 2628.1 kg / ha, height of 145.3 cm and weight of one thousand grains of 3.592 grams and an ABCPDE value of 2364.1. On the contrary, the Altiplano cultivar was the least productive and the most susceptible, with yield values of 649.2 kg / ha, height of 83,6 cm and ABCPDE of 4771,6. Finally, the variables with the highest correlation with the ABCPDE were plant height, yield and the percentage of grains of more than 1.7 mm in diameter.
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