SAWFLY RESISTANCE IN WHEAT: IV. SOME EFFECTS OF LIGHT INTENSITY ON RESISTANCE
- 1 July 1961
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Plant Science
- Vol. 41 (3), 457-465
- https://doi.org/10.4141/cjps61-069
Abstract
The degree of resistance to the wheat stem sawfly (Cephus cinctus Nort.) of seven varieties of wheat grown under shaded conditions was shown to be lower than that of plants grown under unshaded conditions. The breakdown of resistance of Rescue wheat grown in the greenhouse in the winter was prevented by a high-intensity light supplement of 4000 foot-candles but not by a supplement of 1500 foot-candles. The low resistance of Rescue wheat grown in the greenhouse results from low light intensities in the greenhouse in both summer and winter. It was concluded that high light intensities are required for the maximum expression of stem-solidness and sawfly resistance in Rescue wheat.Keywords
This publication has 2 references indexed in Scilit:
- CYTOGENETICS OF SOLID STEM IN COMMON WHEAT: I. MONOSOMICF2ANALYSIS OF THE VARIETY S-615Canadian Journal of Botany, 1959
- SAWFLY RESISTANCE IN WHEAT: II. DIFFERENCES BETWEEN WHEAT GROWN IN THE GREENHOUSE AND ON IRRIGATED LANDCanadian Journal of Plant Science, 1957