Repositorio
Institucional

Meier, Sebastian

Morales, Arturo

Lopez-Olivari, Rafael

Matus, Ivan

Aponte, Humberto

de Souza Campos, Pedro

Khan, Naser

Cartes, Paula

Merino-Gergichevich, Cristian

Castillo, Dalma

Seguel, Alex

Synergistic role between phosphorus and water use efficiency in spring wheat genotypes

ELSEVIER

AGRICULTURAL WATER MANAGEMENT

en

"It is well known that phosphorus (P) addition helps mitigate the adverse effects of water deficit stress on plants. However, the efficiency of spring wheat genotypes in the use of both components has not been addressed. The objective of this study was to evaluate the combined effect of P and water limiting conditions over phosphorus use efficiency (PUE) and water use efficiency (WUE) to categorize different spring wheat genotypes. Eight spring wheat genotypes were selected based on their yield tolerance index score (YTI) obtained from a previous screening of 384 wheat genotypes. They were evaluated for their ability to use P and water. Plants were grown under semi-controlled conditions on an Andisol with soil P-concentration of 3.4 mg P kg(-1) (-P), which was enriched to 30 mg P kg(-1) (+P). Irrigation was applied at two levels: well-watered (+W) and 30% +W (water stressed,-W). Wheat was grown until the end of its phenological cycle. The P and water scarcity produced a delay in wheat development, especially in the first vegetative stages. Genotypic differences in growth, development, P accumulation, and yield were observed in response to P and water limiting conditions. The lowest performance in plant growth and grain yield was regarded when the P and water restrictions were applied. However, differences were observed in terms of PUE and WUE. In this sense, spring wheat genotypes were grouped into three and four classes for PUE and WUE, respectively. The most efficient genotype for all the conditions was ""QUP2418 "", which obtained the highest score in the consolidated PUE and WUE ranking. On the contrary, ""FONTAGRO 92 ""and ""F6CL091337 "" were the most inefficient genotypes. Strong correlations were observed between PUE components and WUE, enabling the future selection of co-adapted wheat genotypes efficient in the use of P and water."

artículo original

This work was supported by the Instituto de Investigaciones Agro-pecuarias (INIA-Chile) through a Nucleus project number 502783. Sebastian Meier and Paula Cartes also acknowledge the FONDECYT-Chile project numbers 1201257 and 1220190.

Este trabajo fue apoyado por el Instituto de Investigaciones Agro-pecuarias (INIA-Chile) a través de un proyecto Núcleo número 502783. Sebastián Meier y Paula Cartes también agradecen los proyectos FONDECYT-Chile números 1201257 y 1220190.

10.1016/j.agwat.2022.107481

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Genotypic difference

Phosphorus scarcity

Water deficit stress

GRAIN-YIELD

ROOT RESPONSE

DROUGHT

STRESS

TOLERANCE

ACQUISITION

CULTIVARS

NUTRITION

NITROGEN

RESISTANCE

Agronomía

Recursos hídricos

Diferencia genotípica

Escasez de fósforo

Estrés por déficit hídrico

RENDIMIENTO DE GRANOS

RESPUESTA DE LAS RAÍCES

SEQUÍA

ESTRÉS

TOLERANCIA

ADQUISICIÓN

CULTIVARES

NUTRICIÓN

NITRÓGENO

RESISTENCIA

Agricultura

Agronomía

Ciencias del suelo

Synergistic role between phosphorus and water use efficiency in spring wheat genotypes

artículo original

version publicada

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metadata

metadata

INIA 502783

ANID-FONDECYT 1201257

ANID-FONDECY T1220190

ANID FONDECYT 1201257

ANID FONDECY T1220190

WOS:000795902700002