Pattern of water use and seed yield under terminal drought in chickpea genotypes

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Abstract

Drought, particularly terminal drought, reduces the yield of chickpea (Cicer arietinum L.). Terminal drought tolerance and water use patterns were evaluated under controlled conditions in 10 genotypes of desi chickpea. Withholding water from early podding reduced vegetative growth, reproductive growth, seed yield, and water use efficiency for seed yield in all genotypes. The genotype Neelam, which produced the highest seed yield when water was withheld, used the least water when well-watered; however, its aboveground biomass at maturity did not differ significantly from six of the nine other genotypes. Indeed, the water-stressed Neelam had the lowest daily transpiration rate during the early stages of water stress and the highest during the later stages, thereby maintaining the highest soil water content in the first 16 days after water was withheld, which enabled higher pod production, lower pod abortion, and better seed filling. Genotypes differed in the threshold value of the fraction of transpirable soil water when flowering and seed set ceased in the water-stress treatment. We conclude that a conservative water use strategy benefits seed yield of chickpea exposed to water shortage during early podding.

Original languageEnglish
Article number1375
Number of pages14
JournalFrontiers in Plant Science
Volume8
DOIs
Publication statusPublished - 9 Aug 2017

Cite this

@article{6072fe3100114e6da175f04418a80331,
title = "Pattern of water use and seed yield under terminal drought in chickpea genotypes",
abstract = "Drought, particularly terminal drought, reduces the yield of chickpea (Cicer arietinum L.). Terminal drought tolerance and water use patterns were evaluated under controlled conditions in 10 genotypes of desi chickpea. Withholding water from early podding reduced vegetative growth, reproductive growth, seed yield, and water use efficiency for seed yield in all genotypes. The genotype Neelam, which produced the highest seed yield when water was withheld, used the least water when well-watered; however, its aboveground biomass at maturity did not differ significantly from six of the nine other genotypes. Indeed, the water-stressed Neelam had the lowest daily transpiration rate during the early stages of water stress and the highest during the later stages, thereby maintaining the highest soil water content in the first 16 days after water was withheld, which enabled higher pod production, lower pod abortion, and better seed filling. Genotypes differed in the threshold value of the fraction of transpirable soil water when flowering and seed set ceased in the water-stress treatment. We conclude that a conservative water use strategy benefits seed yield of chickpea exposed to water shortage during early podding.",
keywords = "flower abortion, fraction of transpirable soil water, plant water use pattern, pod abortion, reproductive growth and development, transpiration, CICER-ARIETINUM L., MEDITERRANEAN-TYPE ENVIRONMENT, SEASON GRAIN LEGUMES, POD PRODUCTION, STOMATAL CONDUCTANCE, LEAF EXPANSION, GAS-EXCHANGE, STRESS, TRAITS, TRANSPIRATION",
author = "Jiayin Pang and Turner, {Neil C.} and Yan-Lei Du and Colmer, {Timothy D.} and Siddique, {Kadambot H. M.}",
year = "2017",
month = "8",
day = "9",
doi = "10.3389/fpls.2017.01375",
language = "English",
volume = "8",
journal = "Frontiers in Plant Science",
issn = "1664-462X",
publisher = "Frontiers Media SA",

}

TY - JOUR

T1 - Pattern of water use and seed yield under terminal drought in chickpea genotypes

AU - Pang, Jiayin

AU - Turner, Neil C.

AU - Du, Yan-Lei

AU - Colmer, Timothy D.

AU - Siddique, Kadambot H. M.

PY - 2017/8/9

Y1 - 2017/8/9

N2 - Drought, particularly terminal drought, reduces the yield of chickpea (Cicer arietinum L.). Terminal drought tolerance and water use patterns were evaluated under controlled conditions in 10 genotypes of desi chickpea. Withholding water from early podding reduced vegetative growth, reproductive growth, seed yield, and water use efficiency for seed yield in all genotypes. The genotype Neelam, which produced the highest seed yield when water was withheld, used the least water when well-watered; however, its aboveground biomass at maturity did not differ significantly from six of the nine other genotypes. Indeed, the water-stressed Neelam had the lowest daily transpiration rate during the early stages of water stress and the highest during the later stages, thereby maintaining the highest soil water content in the first 16 days after water was withheld, which enabled higher pod production, lower pod abortion, and better seed filling. Genotypes differed in the threshold value of the fraction of transpirable soil water when flowering and seed set ceased in the water-stress treatment. We conclude that a conservative water use strategy benefits seed yield of chickpea exposed to water shortage during early podding.

AB - Drought, particularly terminal drought, reduces the yield of chickpea (Cicer arietinum L.). Terminal drought tolerance and water use patterns were evaluated under controlled conditions in 10 genotypes of desi chickpea. Withholding water from early podding reduced vegetative growth, reproductive growth, seed yield, and water use efficiency for seed yield in all genotypes. The genotype Neelam, which produced the highest seed yield when water was withheld, used the least water when well-watered; however, its aboveground biomass at maturity did not differ significantly from six of the nine other genotypes. Indeed, the water-stressed Neelam had the lowest daily transpiration rate during the early stages of water stress and the highest during the later stages, thereby maintaining the highest soil water content in the first 16 days after water was withheld, which enabled higher pod production, lower pod abortion, and better seed filling. Genotypes differed in the threshold value of the fraction of transpirable soil water when flowering and seed set ceased in the water-stress treatment. We conclude that a conservative water use strategy benefits seed yield of chickpea exposed to water shortage during early podding.

KW - flower abortion

KW - fraction of transpirable soil water

KW - plant water use pattern

KW - pod abortion

KW - reproductive growth and development

KW - transpiration

KW - CICER-ARIETINUM L.

KW - MEDITERRANEAN-TYPE ENVIRONMENT

KW - SEASON GRAIN LEGUMES

KW - POD PRODUCTION

KW - STOMATAL CONDUCTANCE

KW - LEAF EXPANSION

KW - GAS-EXCHANGE

KW - STRESS

KW - TRAITS

KW - TRANSPIRATION

U2 - 10.3389/fpls.2017.01375

DO - 10.3389/fpls.2017.01375

M3 - Article

VL - 8

JO - Frontiers in Plant Science

JF - Frontiers in Plant Science

SN - 1664-462X

M1 - 1375

ER -