Selection of bean lineages regarding the use and response to phosphorus available in nutrient solution

Ritieli Baptista Mambrin,Ivan Ricardo Carvalho,Vinícius Jardel Szareski,Diogo Da Silva Moura,Francine Lautenchleger,Darlene Sausen

doi:10.33448/rsd-v9i11.8850

Abstract

The objectives of this work were to evaluate the genetic variability of bean lineages in relation to phosphorus accumulation in plant tissues and yield, in addition to identifying efficient bean lineages in the use of phosphorus and responsive to the application of phosphorus in the crop environment. Work was carried out at Plant Science Department of the Federal University of Santa Maria. Concentrations of phosphorus in the nutrient solution between 1.33 and 1.84 mmol L-1 provide higher dry mass of pods, grains, number of grains and grain yield for the cultivars Pérola and IPR88 Uirapurú in the growing seasons autumn-winter and spring-summer. Concentrations between 1.37 and 1.96 mmol L-1 have the highest values of phosphorus in plant tissues, grain yield and phytic acid. Characteristics dry matter of leaves, stem and pods in pod filling, dry matter of grains on maturation, number of grains, number of pods and phosphorus concentration in plant tissues at the pod filling stage are promising because it allows for indirect selection. The nutritional value of leaves in young plants, for phosphorus, equivalent to that of grains. There is genetic variability among the bean lineages studied, for the production of dry mass, yield and accumulation of phosphorus in the tissues. Lineage L 2527 showed to be efficient and responsive to the use of phosphorus for the shoot of the plant. Lineage L 2225 showed to be efficient in the use of phosphorus in shoot, grains and grain production, besides maintaining this characteristic in the two growing seasons.

Highlights

Beans (Phaseolus vulgaris L.) are widely distributed in Brazil because of their good adaptation to the most varied edaphoclimatic conditions (Pereira et al, 2010)
This efficiency refers to the amount of dry matter or grains produced per unit of nutrient applied, and its optimization is of great importance in the production of plant species (Fageria, 1998)
The efficiency of the use of phosphorus by the plant is related to several internal and external mechanisms, such as aspects of root morphology, chemical changes in the rhizosphere, changes in the physiological characteristics of absorption kinetics, changes in biochemical processes, genetic variability and interactions with microorganisms that inhabit the soil (Lynch, 2007). It can be expressed and calculated in different ways, the index being proposed by Siddiqui e Glass (1981) is the most used to evaluate the efficiency in the use of nutrients, because it relates the efficiency in the use to the growth of the plants

Summary

Introduction

Beans (Phaseolus vulgaris L.) are widely distributed in Brazil because of their good adaptation to the most varied edaphoclimatic conditions (Pereira et al, 2010). The efficiency of the use of phosphorus by the plant is related to several internal and external mechanisms, such as aspects of root morphology, chemical changes in the rhizosphere, changes in the physiological characteristics of absorption kinetics, changes in biochemical processes, genetic variability and interactions with microorganisms that inhabit the soil (Lynch, 2007) It can be expressed and calculated in different ways, the index being proposed by Siddiqui e Glass (1981) is the most used to evaluate the efficiency in the use of nutrients, because it relates the efficiency in the use to the growth of the plants. This response is estimated by the relation between the production and biomass

Objectives

Methods

Results