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Titolo:
Water control and survival of Ipomoea batatas grown photoautotrophically under forced ventilation and photomixotrophically under natural ventilation
Autore:
Zobayed, SMA; Afreen, F; Kubota, C; Kozai, T;
Indirizzi:
Chiba Univ, Fac Hort, Dept Bioprod Sci, Chiba 2718510, Japan Chiba Univ Chiba Japan 2718510 t, Dept Bioprod Sci, Chiba 2718510, Japan
Titolo Testata:
ANNALS OF BOTANY
fascicolo: 3, volume: 86, anno: 2000,
pagine: 603 - 610
SICI:
0305-7364(200009)86:3<603:WCASOI>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUMIDITY; ACCLIMATIZATION; PLANTLETS;
Keywords:
epicuticular wax; hardening; stomata; sweet potato; transpiration; water control;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Zobayed, SMA Univ Hull, Dept Biol Sci, Hull HU6 7RX, N Humberside, EnglandUniv Hull Hull N Humberside England HU6 7RX berside, England
Citazione:
S.M.A. Zobayed et al., "Water control and survival of Ipomoea batatas grown photoautotrophically under forced ventilation and photomixotrophically under natural ventilation", ANN BOTANY, 86(3), 2000, pp. 603-610

Abstract

Water loss and its determining factors were compared in leaves of in vitro-grown sweet potato (Ipomoea batatas L. Lam,'Beniazuma') plantlets culturedeither photoautotrophically under forced ventilation (scaled-up vessel) orphotomixotrophically under natural ventilation. Functional stomata, a greater amount of wax deposition on the leaves and smaller epidermal conductance were observed in plantlets cultured photoautotrophically under forced ventilation. When transplanted directly into soil in the greenhouse (without ex vitro hardening), plantlets grown photoautotrophically under forced ventilation survived better and grew faster. This was because they were better able to control transpiration and thus lost less water and showed no signs of wilting. In contrast, plantlets cultured under photomixotrophic conditions had open stomata which were not functional, a higher transpiration rate, and uncontrolled and rapid water loss immediately after transfer ex vitro. Thus, wilting and severe desiccation with irreversible tissue damage were observed in the leaves, which died within a few days. (C) 2000 Annals of Botany Company.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 01:41:48