ISSN:
1573-5060
Keywords:
Triticum aestivum
;
bread wheat
;
Triticum turgidum var. durum
;
durum wheat
;
epicuticular wax
;
spectral reflectance
;
drought tolerance
;
glaucousness
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary Cultivars of common wheat (Triticum aestivum L.) and durum wheat (T. turgidum L. var. durum) were evaluated for epicuticular wax content and its relationship with spectral reflectance. Epicuticular wax is associated with drought tolerance. Highly significant differences (1.51 to 2.80 mg/dm2) were found in the amount of epicuticular wax (EW) among the cultivars. Water stress significantly enhanced the level of EW. EW content under stress and control conditions were positively correlated (r=0.85, p〈0.01) suggesting that selection for this trait could be practised in either environment. Surface reflectance was reduced when the waxy layer from the leaf was removed with chloroform. The reduction for the abaxial surface was twice that for the adaxial surface indicating that the abaxial surface was more waxy than the adaxial one. The mean reduction (both surfaces) termed ‘δ’ was positively correlated with the amount of EW (r=0.59, p〈0.01).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00024805
