6Richards R A, Rebetzke G J, Condom A G. Breeding opportunities for increasing the efficiency of water use and crop yield in temperate cereals. Crop Science, 2002,42:111 - 121.
7Araus J L, Brown H R, Febrero A. Ear photosynthesis, carbon isotope discrimination and the contribution of respirator) CO2 to differences in grain mass in durum wheat. Plant, Cell and Environment,1993,16:383 - 392.
8Wang Z M,Wei A L. Photosynthetic characteristics of non-leaf organs of winter cultivars differing in ear type and their relationship with grain weight per ear. Photosynthetica ,2001,39(2) :239 - 244.
9Zhang J H, Sui X Z, Li B. An improved water-use efficiency for winter wheat grown under reduced irrigation. Field Crop Research,1998,59:91 - 98.
10Teaer I D, Peterson C J. Surface area of chlorophyll containing tissue on the florescence of Triticum acstivum L. Crop Science, 1971,11:627 - 628.
