Yield, Water Relations, Gas Exchange, and Surface Reflectances of Near‐Isogenic Wheat Lines Differing in Glaucousness¹

Near‐isogenic lines that contrast in the presence or absence of glaucousness were developed in durum wheat ( Triticum turgidum L. durum group) and common wheat ( T. aestivum L.) and grown in plots in three field environments varying in soil water availability. The glaucous selections yielded significantly more grain and dry matter than non‐glaucous selections in the two higher yielding environments but not in the very dry environment where...