ANALISIS DE CAUSA Y EFECTO PARA RENDIMIENTO Y COMPONENTES DEL RENDIMIENTO EN TRIGO DE PRIMAVERA

Abstract

The main objetive of this study was demostrated the interrelationships between yield and its component on spring wheat by mean the path-coefficient analysis. The following characters were measured: grain yield per plant, number of grains per spike, 1000-grain weights, heading date and plant height.
The results indicated that only number of spikes and heading date were shown to be positively correlated, r = 0.861** and r = 0.684**, respectively, with grain , yield.
Through the path-coefficient analysis it was demostrated that the direct effects on yield were positive and hight in the following characters, considered as the primary yield components: number of spikes (P = 1.0344), grains per spike (P = 0.7104) and grain weight (P = 0.7110). In the case of heading date and plant height, considered as secondary components, the effects on yield were low (P = - 0,1013 and P = 0.1513, respectively).
The effects of yield components on yield were disturbed by the use of simple correlation coefficients as a. mean to analise the degree of association between characters.