Drought-tolerant barley: I. Field observations of growth and development

Andrea Y. Carter, Martha C Hawes, Michael J Ottman

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

An ever-growing challenge to agricultural production worldwide is the reduced availability of water and increased incidence of drought. The development of low-irrigation barley cultivars marks a significant achievement in breeding efforts for drought tolerance, but specific traits conferring adaptation to water stress remain unclear. Here, we report results from two years of replicated field trials comparing yield, phenology, water usage, and rooting characteristics of low-irrigation varieties “Solar” and “Solum” to high-input, semi-dwarf varieties “Kopious” and “Cochise”. The objective was to identify differential performance of varieties under high- and low-water conditions through comparison of growth and developmental traits. Rooting characteristics were analyzed by digging in-field root profile walls to a depth of 1.8 m. Varieties were compared under high (877 mm) and low (223 mm) water regimes including irrigation and precipitation. Observed traits associated with improved performance of the low-irrigation varieties under drought conditions included early vigor, early flowering, greater root growth at 40–80 cm depth, and more effective water use exhibited by greater water extraction post-anthesis. The deeper rooting pattern of the low-irrigation varieties may be related to their ability to use more water post-anthesis under water stress, and thus, to fill grain, compared to high input varieties.

Original languageEnglish (US)
Article number221
JournalAgronomy
Volume9
Issue number5
DOIs
StatePublished - May 30 2019

Fingerprint

growth and development
barley
drought
irrigation
water
rooting
flowering
water stress
dwarf cultivars
water utilization
irrigation management
drought tolerance
vigor
phenology
root growth
field experimentation
agriculture
incidence
breeding
cultivars

Keywords

  • Barley
  • Drought tolerance
  • Field trial
  • Low irrigation
  • Root profile
  • Root traits
  • Water use

ASJC Scopus subject areas

  • Agronomy and Crop Science

Cite this

Drought-tolerant barley : I. Field observations of growth and development. / Carter, Andrea Y.; Hawes, Martha C; Ottman, Michael J.

In: Agronomy, Vol. 9, No. 5, 221, 30.05.2019.

Research output: Contribution to journalArticle

@article{926f3f53bccc47e8b19d3dc26102e0d0,
title = "Drought-tolerant barley: I. Field observations of growth and development",
abstract = "An ever-growing challenge to agricultural production worldwide is the reduced availability of water and increased incidence of drought. The development of low-irrigation barley cultivars marks a significant achievement in breeding efforts for drought tolerance, but specific traits conferring adaptation to water stress remain unclear. Here, we report results from two years of replicated field trials comparing yield, phenology, water usage, and rooting characteristics of low-irrigation varieties “Solar” and “Solum” to high-input, semi-dwarf varieties “Kopious” and “Cochise”. The objective was to identify differential performance of varieties under high- and low-water conditions through comparison of growth and developmental traits. Rooting characteristics were analyzed by digging in-field root profile walls to a depth of 1.8 m. Varieties were compared under high (877 mm) and low (223 mm) water regimes including irrigation and precipitation. Observed traits associated with improved performance of the low-irrigation varieties under drought conditions included early vigor, early flowering, greater root growth at 40–80 cm depth, and more effective water use exhibited by greater water extraction post-anthesis. The deeper rooting pattern of the low-irrigation varieties may be related to their ability to use more water post-anthesis under water stress, and thus, to fill grain, compared to high input varieties.",
keywords = "Barley, Drought tolerance, Field trial, Low irrigation, Root profile, Root traits, Water use",
author = "Carter, {Andrea Y.} and Hawes, {Martha C} and Ottman, {Michael J}",
year = "2019",
month = "5",
day = "30",
doi = "10.3390/agronomy9050221",
language = "English (US)",
volume = "9",
journal = "Agronomy",
issn = "2073-4395",
publisher = "MDPI AG",
number = "5",

}

TY - JOUR

T1 - Drought-tolerant barley

T2 - I. Field observations of growth and development

AU - Carter, Andrea Y.

AU - Hawes, Martha C

AU - Ottman, Michael J

PY - 2019/5/30

Y1 - 2019/5/30

N2 - An ever-growing challenge to agricultural production worldwide is the reduced availability of water and increased incidence of drought. The development of low-irrigation barley cultivars marks a significant achievement in breeding efforts for drought tolerance, but specific traits conferring adaptation to water stress remain unclear. Here, we report results from two years of replicated field trials comparing yield, phenology, water usage, and rooting characteristics of low-irrigation varieties “Solar” and “Solum” to high-input, semi-dwarf varieties “Kopious” and “Cochise”. The objective was to identify differential performance of varieties under high- and low-water conditions through comparison of growth and developmental traits. Rooting characteristics were analyzed by digging in-field root profile walls to a depth of 1.8 m. Varieties were compared under high (877 mm) and low (223 mm) water regimes including irrigation and precipitation. Observed traits associated with improved performance of the low-irrigation varieties under drought conditions included early vigor, early flowering, greater root growth at 40–80 cm depth, and more effective water use exhibited by greater water extraction post-anthesis. The deeper rooting pattern of the low-irrigation varieties may be related to their ability to use more water post-anthesis under water stress, and thus, to fill grain, compared to high input varieties.

AB - An ever-growing challenge to agricultural production worldwide is the reduced availability of water and increased incidence of drought. The development of low-irrigation barley cultivars marks a significant achievement in breeding efforts for drought tolerance, but specific traits conferring adaptation to water stress remain unclear. Here, we report results from two years of replicated field trials comparing yield, phenology, water usage, and rooting characteristics of low-irrigation varieties “Solar” and “Solum” to high-input, semi-dwarf varieties “Kopious” and “Cochise”. The objective was to identify differential performance of varieties under high- and low-water conditions through comparison of growth and developmental traits. Rooting characteristics were analyzed by digging in-field root profile walls to a depth of 1.8 m. Varieties were compared under high (877 mm) and low (223 mm) water regimes including irrigation and precipitation. Observed traits associated with improved performance of the low-irrigation varieties under drought conditions included early vigor, early flowering, greater root growth at 40–80 cm depth, and more effective water use exhibited by greater water extraction post-anthesis. The deeper rooting pattern of the low-irrigation varieties may be related to their ability to use more water post-anthesis under water stress, and thus, to fill grain, compared to high input varieties.

KW - Barley

KW - Drought tolerance

KW - Field trial

KW - Low irrigation

KW - Root profile

KW - Root traits

KW - Water use

UR - http://www.scopus.com/inward/record.url?scp=85065886168&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85065886168&partnerID=8YFLogxK

U2 - 10.3390/agronomy9050221

DO - 10.3390/agronomy9050221

M3 - Article

AN - SCOPUS:85065886168

VL - 9

JO - Agronomy

JF - Agronomy

SN - 2073-4395

IS - 5

M1 - 221

ER -