Stomatal behaviour of kenaf and sorghum in a semiarid tropical environment. I. During the night

Muchow, R.C. and Ludlow, M.M. and Fisher, M.J. and Myers, R.J.K. (1980) Stomatal behaviour of kenaf and sorghum in a semiarid tropical environment. I. During the night. Australian Journal of Plant Physiology, 7 (4). pp. 609-619.

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Abstract

The extent of night-time stomatal opening in field-grown kenaf (Hibiscus cannabinus) cv. Guatemala-4, a C3 dicotyledon, and grain sorghum, a C4 grass, and the factors controlling the opening were studied at high and low soil water status. Since saturation deficit and temp. varied together in the field, the response of stomatal conductance to these individual factors was determined under controlled environment conditions in a leaf chamber apparatus. At both high and low soil water status the stomata of sorghum were closed from sunset to sunrise whereas in kenaf partial stomatal opening was observed throughout the night. Initiation of night opening occurred in response to decreasing temp., but the degree of opening was determined by plant water status. The importance of night-time stomatal opening on the water relations of the crop is discussed

Item Type: Article
Author Affiliation: Division of Tropical Crops and Pastures, CSIRO, Kimberley Research Station, Kununurra, W.A., Australia 6743
Subjects: Plant Production
Plant Physiology and Biochemistry > Plant Physiology
Plant Physiology and Biochemistry > Biochemistry
Divisions: Sorghum
Soyabean
Depositing User: Ms K Syamalamba
Date Deposited: 09 Oct 2012 08:56
Last Modified: 09 Oct 2012 08:56
URI: http://eprints.icrisat.ac.in/id/eprint/8335

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