Resumo

MAYTA-MAMANI, Adelio et al. Evaluation agriculture morphological and analysis of yield components in twelve cañahua agreements (Chenopodium pallidicaule Aellen). J. Selva Andina Biosph. [online]. 2015, vol.3, n.2, pp.58-74. ISSN 2308-3867.

In the present investigation, they were carried out the analysis descriptive statistic, variance analysis, comparison of stockings of Duncan, multiple correlation and analysis of path coefficient, this I finish to determine the direct and indirect effects, in cañahua (Chenopodium pallidicaule Aellen). The study behaved at random under the design of blocks with four repetitions and twelve treatments (cañahua agreements), during the campaign agricultural 2009 and 2010. The results show, the grain production on the average general of 7.67 grain/plant, with a coefficient of variability of 23.1%, and with better yields they were the agreements 455, 222, ILLPA-INIA and CUPI, achieved to produce 12.28 grain/plant on the average, 10.58 grain/plant, 10.29 grain/plant and 10.16 grain/plant, respectively. Through the path analysis, selection approaches the components of yields were identified. In the agreement 455, the coefficient of determination of the system plants dear it reached 36.5%, and main yield components were constituted, number of branches, vegetable covering and height of the plant, with an association degree and direct effect of r=0.505 P=0.327, r=0.446 P=0.168 and r=0.417 P=0.196, respectively. In the agreement 222, the characters morphological that influence in the yield this explained in 40.5%, and as better yield component the number of branches has been constituted (r=0.462) (P=0.261), vegetable covering (r=0.514) (P=0.271) and height of the plant (r=0.383) (P=0.047). In the agreement ILLPA-INIA, it has been determined as better yield component, the number of branches (r=0.514) (P=0.318) and diameter of the shaft (r=0.479) (P=0.524), these characters in its group justify that the system plants defined total it was 44.7% of the direct influence. Agreement CUPI, in this cultivation the characters that influenced in the grain yield are implied in 36.4% and with better characters morphological that have been able to influence in a direct way they are; number of branches (r=0.395) (P=0.165) and vegetable covering (r=0.573) (P=0.251). These characters morphological have played an important list in the development and architectural structure of the plant that influenced direct and indirectly in the grain yield and it is important to pay attention to these yield components for the genetic improvement of the yield of grains in cañahua.

Palavras-chave : Chenopodium pallidicaule Aellen; Agreement; yield components; path coefficient; pool of genes.

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