Environmental and Genetic Components of Stomatal Behavior in Two Genotypes of Upland Cotton
- 1 March 1977
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 59 (3) , 354-356
- https://doi.org/10.1104/pp.59.3.354
Abstract
Two parental lines of Upland cotton (Gossypium hirsutum L.) plus their reciprocal F1, F2 and backcross populations were field-tested for environmental and genetic components of leaf diffusive resistance. Leaf resistance was measured with a diffusion porometer 3 times each day during 6 days in Aug. A large, consistent environmental component was present during the morning, afternoon and evening, but the genetic component appeared mainly during the afternoon. Leaf water potential indicated that afternoon was the period of highest water stress. Genetic analyses revealed that leaf resistance was associated with additive and dominance genetic variances, with an estimated narrow sense heritability of 25%. High leaf resistance was completely dominant to low resistance.This publication has 1 reference indexed in Scilit:
- Design Calibration and Field Use of a Stomatal Diffusion PorometerPlant Physiology, 1969