eprintid: 30
rev_number: 26
eprint_status: archive
userid: 1
dir: disk0/00/00/00/30
datestamp: 2011-05-19 06:34:08
lastmod: 2011-10-16 07:18:59
status_changed: 2011-05-19 06:34:08
type: article
metadata_visibility: show
contact_email: Library-ICRISAT@cgiar.org
item_issues_count: 0
creators_name: Krishnamurthy, L
creators_name: Gaur, P M
creators_name: Basu, P S
creators_name: Chaturvedi, S K
creators_name: Tripathi, S
creators_name: Vadez, V
creators_name: Rathore, A
creators_name: Varshney, R K
creators_name: Gowda, C L L
icrisatcreators_name: Krishnamurthy, L
icrisatcreators_name: Gaur, P M
icrisatcreators_name: Chaturvedi, S K
icrisatcreators_name: Vadez, V
icrisatcreators_name: Tripathi, S
icrisatcreators_name: Rathore, A
icrisatcreators_name: Varshney, R K
icrisatcreators_name: Gowda, C L L
affiliation: ICRISAT(Patancheru)
affiliation: Indian Institute of Pulses Research(Kanpur)
title: Large genetic variation for heat tolerance
in the reference collection of chickpea
(Cicer arietinum L.) germplasm
ispublished: pub
subjects: s1.1
full_text_status: restricted
keywords: climate change; harvest index; heat tolerance index; high temperature; shoot biomass
agrotags: <b>Agrotags</b>     - tolerance | yields | chickpeas | developmental stages | biological phenomena | crops | sowing | genotypes | planting | farms <br><b>Fishtags</b>    - NOT-AVAILABLE<br><b>Geopoliticaltags</b> - india | delhi | marches | gujarat | andhra pradesh
note: This work was funded by the Department of Agriculture
and Cooperation, Ministry of Agriculture, Government
of India through the Integrated Scheme of Oilseeds,
Pulses, Oil palm and Maize. The technical help of
Mr J. Shankaraiah, Research Technician, ICRISAT and
Mr Raghubanshi Singh, Miss Rinki and Mr Pankaj
Kumar Singh, IIPR, Kanpur in conducting the field experiments
is sincerely acknowledged.
abstract: Chickpea is the third most important pulse crop worldwide. Changes in cropping system
that necessitate late planting, scope for expansion in rice fallows and the global warming
are pushing chickpeas to relatively warmer growing environment. Such changes demand
identification of varieties resilient to warmer temperature. Therefore, the reference collection
of chickpea germplasm, defined based on molecular characterization of global composite
collection, was screened for high temperature tolerance at two locations in India (Patancheru
and Kanpur) by delayed sowing and synchronizing the reproductive phase of the crop with
the occurrence of higher temperatures ($358C). A heat tolerance index (HTI) was calculated
using a multiple regression approach where grain yield under heat stress is considered as
a function of yield potential and time to 50% flowering. There were large and significant
variations for HTI, phenology, yield and yield components at both the locations. There
were highly significant genotypic effects and equally significant G £ E interactions for all the
traits studied. A cluster analysis of the HTI of the two locations yielded five cluster groups
as stable tolerant (n ¼ 18), tolerant only at Patancheru (n ¼ 34), tolerant only at Kanpur
(n ¼ 23), moderately tolerant (n ¼ 120) and stable sensitive (n ¼ 82). The pod number per
plant and the harvest index explained $60% of the variation in seed yield and $49% of
HTI at Kanpur and $80% of the seed yield and $35% of HTI at Patancheru, indicating that
partitioning as a consequence of poor pod set is the most affected trait under heat stress.
A large number of heat-tolerant genotypes also happened to be drought tolerant.
date: 2011
date_type: published
publication: Plant Genetic Resources : Characterization and Utilization
volume: 9
number: 1
publisher: Cambridge
pagerange: 59-69
refereed: TRUE
official_url: http://dx.doi.org/10.1017/S1479262110000407
related_url_url: http://scholar.google.co.in/scholar?hl=en&q=allintitle%3A+%22Large+genetic+variation+for+heat+tolerance+in+the+reference+collection+of+chickpea+%28Cicer+arietinum+L.%29+germplasm%22&btnG=Search&as_sdt=0%2C5&as_ylo=&as_vis=0
related_url_type: author
funders: Government of India - Ministry of Agriculture - Department of Agriculture and Cooperation
citation:   Krishnamurthy, L and Gaur, P M and Basu, P S and Chaturvedi, S K and Tripathi, S and Vadez, V and Rathore, A and Varshney, R K and Gowda, C L L  (2011) Large genetic variation for heat tolerance in the reference collection of chickpea (Cicer arietinum L.) germplasm.  Plant Genetic Resources : Characterization and Utilization, 9 (1).  pp. 59-69.      
document_url: http://oar.icrisat.org/30/1/lkm2011.pdf
document_url: http://oar.icrisat.org/30/2/lkmword.pdf