Phenotypic stability and plant densities of stevia (Stevia rebaudiana Bert.) genotypes in the Caribbean Region of Colombia

Acta Agronómica

Leguízamo, Alejandro Cleves¹  Araméndiz Tatis, Hermes²  Jarma Orozco, Alfredo² 

[1] Universidad Pedagógica y Tecnológica de Colombia, Duitama, Colombia;Universidad de Córdoba, Montería, Colombia

关键词: Biomass yield;    genotype-environment interaction;    glycosides;    leaf/stem ratio;    plant density;   

DOI  :  

学科分类：农业科学（综合）

来源: Universidad Nacional de Colombia * Facultad de Ciencias Agropecuarias Palmira

【 摘 要 】

Phenotypic stability studies are important to recommend objectively the planting of genotypes showing appropriate behavior in one or more areas. Stevia (Stevia rebaudiana Bert.), a species of recent cropping in Colombia, is characterized by the capacity of synthesize highly sweeteners diterpene glycosides with low calorie. However, while defining the environmental conditions for production, leaf /stem ratio in the canopy, and the amount of total glycosides, few studies of adaptation have been made in the country. This study was carried out in Montería-Colombia (8°52' N and 76°48' W) to determine the phenotypic stability of two genotypes of stevia (Morita 1 and Morita 2) and three plant densities (25; 12.5 and 6.25 plants/ m2) during three sowing seasons in the Humid Colombian Caribbean Region. The experimental design consisted of a randomized complete block. The results showed that Morita 2, established in densities of 25 plants/m2, recorded the highest levels of stability for the dry leaf yield per hectare (Pig =0; Pid =0). On the other hand, the same genotype showed a higher leaf/stem ratio (1.17±0.3) and higher content of total glycosides (0.1586±0.024) when radiation is higher and plant densities are between 12.5 and 25 plants/m2.

【 授权许可】

CC BY-NC-SA