eprintid: 10024
rev_number: 14
eprint_status: archive
userid: 1305
dir: disk0/00/01/00/24
datestamp: 2017-05-26 09:11:39
lastmod: 2017-10-17 04:14:38
status_changed: 2017-05-26 09:11:39
type: article
metadata_visibility: show
contact_email: Library-ICRISAT@CGIAR.ORG
creators_name: Guiguitant, J
creators_name: Marrou, H
creators_name: Vadez, V
creators_name: Gupta, P
creators_name: Kumar, Shiv
creators_name: Soltani, A
creators_name: Sinclair, T R
creators_name: Ghanem, M E
icrisatcreators_name: Vadez, V
affiliation: Crop Physiology Laboratory, International Center for Agricultural Research in the Dry Areas (ICARDA), Crop Physiology Laboratory, North-Africa Platform (Rabat)
affiliation: Montpellier SupAgro (Montpellier)
affiliation: UMR System, Montpellier SupAgro (Montpellier)
affiliation: ICRISAT (Patancheru)
affiliation: Agronomy Group, Gorgan University of Agricultural Sciences and Natural Resources (Gorgan)
affiliation: Department of Crop Science, North Carolina State University (NCSU) (Raleigh)
country: Morocco
country: France
country: India
country: Iran
country: USA
title: Relevance of limited-transpiration trait for lentil ( Lens culinaris Medik.) in South Asia
ispublished: pub
subjects: SA1
subjects: s2.10
subjects: s2.13
subjects: s26
subjects: s355
divisions: CRPS4
crps: crp1.5
full_text_status: restricted
keywords: Lentil; Limited transpiration trait; Vapor pressure deficit; South Asia; SSM; Crop model; Genetic improvement
note: This work was supported by the CGIAR Research Program on Grain
Legumes and the USAID/CGIAR-US Universities Linkage Program.
abstract: Drought is one of the most important environmental factors that limit crop production. It has been hypothesized that a limited-transpiration trait under high vapor pressure deficit (VPD) is a mechanism for water conservation leading to yield increase under water-deficit conditions. The first research objective was to compare expression of limited-transpiration (TRlim) in lentil (Lens culinaris Medik.) observed by whole-plant measurements in controlled environments and under natural conditions outdoors during a high VPD period. Seventeen lentil genotypes were studied. All genotypes showed a linear increase with increasing VPD under natural conditions. Differences were observed among genotypes in their expression of TRlim with increasing VPD in the controlled environment. Almost all genotypes showed a VPD breakpoint at approximately 3.4 kPa. A simulation analysis was conducted across South Asia to identify where, how often, and how much this trait in lentil would benefit farmers with four different VPD breakpoint scenarios (VPD breakpoint at 3.4, 2.2, 1.1 kPa, and VPD-insensitive). Results showed that the limited-transpiration trait at a low simulated threshold (1.1 kPa) can result in improved lentil performance in drought-prone environments and that the impact of the trait on lentil productivity varies with geography and environment. The largest average yield increase was simulated for drought-prone environments (250 g m−2). Outcomes from this simulation study provide insights into the plausible role of the limited-transpiration trait under high VPD in future lentil genetic improvement and implies that a search for germplasm with a breakpoint as low as 1.1 kPa needs to be made.
date: 2017-08
date_type: published
publication: Field Crops Research
volume: 209
publisher: Elsevier
pagerange: 96-107
id_number: 10.1016/j.fcr.2017.04.013
refereed: TRUE
issn: 03784290
official_url: http://dx.doi.org/10.1016/j.fcr.2017.04.013
related_url_url: https://scholar.google.co.in/scholar?q=Relevance+of+limited-transpiration+trait+for+lentil+(Lens+culinaris+Medik.)+in+South+Asia&btnG=&hl=en&as_sdt=0%2C5
related_url_type: pub
citation:   Guiguitant, J and Marrou, H and Vadez, V and Gupta, P and Kumar, Shiv and Soltani, A and Sinclair, T R and Ghanem, M E  (2017) Relevance of limited-transpiration trait for lentil ( Lens culinaris Medik.) in South Asia.  Field Crops Research, 209.  pp. 96-107.  ISSN 03784290     
document_url: http://oar.icrisat.org/10024/1/Relevance%20of%20limited-transpiration%20trait%20for%20lentil.pdf