Caracterización y obtención de funciones para producción de biomasa en cinco cultivares de frijol yorimón: ii método no destructivo

Abstract

In this work, the production of biomass for five crops of cowpea was studied in the Carrizal Valley in La Paz, Baja California Sur (23Âo 20' 47'' North and 110Âo 16' 14'' East). The soil has a pH of 6.85, poor in organic matter, non-saline, low levels of calcium, nitrogen, and magnesium but a high level of phosphorus. The climate is dry with average temperature of 22°C. Five cowpea cultivars were used and established in the field under completed randomized block design with four replications. The data were analyzed by means of canonical discrimination, multivariate analysis, correlation, and simple and multiple linear regressions for the generation of green matter production (PMV) and dry matter production (PMS) functions. Analysis of variance were carried out and multiple comparison means (Tukey P=0.05) when the variables showed significant statistical differences among cultivars. In general, all variables showed significant differences (P<0.05) except the variables fresh weight (PFH) and dry weight of leaves (PSH). The cultivars 18 (IT90K-277-2) and 25 (Sesenteno) showed the higher values of PMV and PMS (105.33 and 90.66 and 44.90 and 35.80 g, respectively). The best function of PMV was to the cultivar 4 (Cuarenteno) with R2 of 0.69 and for PMS was the cultivar 23 (IT91K-118-20) with R2 of 0.71, being diameter of shoot (DT) and number of secondary branches (NRS) the variables with higher influence in the function of PMV, while number of leaves per plant (NHP) and NRS are the variables with higher influence in the function of PMS.