Terminal drought-tolerant pearl millet [Pennisetum glaucum (L.) R. Br.] have high leaf ABA and limit transpiration at high vapour pressure deficit

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F10%3A10081155" target="_blank" >RIV/00216208:11310/10:10081155 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Terminal drought-tolerant pearl millet [Pennisetum glaucum (L.) R. Br.] have high leaf ABA and limit transpiration at high vapour pressure deficit

Original language description

Pearl millet genotypes carrying a terminal drought tolerance QTL have a lower transpiration rate (Tr) under well-watered conditions than sensitive lines. Here experiments were carried out to test whether this relates to leaf ABA at high VPD, and whetherthat leads to transpiration efficiency differences. Most genotypic differences were found under well-watered conditions. ABA levels under these conditions were higher in tolerant genotypes, including NIL-QTLs, and ABA did not increase under water stress.Well-watered Tr was lower in tolerant genotypes at all VPD levels. It is concluded that two water-saving mechanisms may operate under well-watered conditions in tolerant pearl millet: a low Tr even at low VPD, which may relate to leaf ABA; and a sensitivity to higher VPD that further restricts Tr, suggesting the involvement of hydraulic signals. Both traits could contribute to absolute water saving. This deserves consideration in the breeding of terminal drought-tolerant lines.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

ED - Physiology

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)<br>V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2010

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Experimental Botany

ISSN

0022-0957

e-ISSN

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Volume of the periodical

61

Issue of the periodical within the volume

5

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

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UT code for WoS article

000275567500016

EID of the result in the Scopus database

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