The Production and Distribution of Dry Matter in Maize after Flowering

Physiological Significance of Internal Water Relations to Crop Yield

“…The two sources for these assimilates are photosynthesis in the ear itself and translocation from elsewhere in the plant. Although photosynthate accumulated prior to anthesis contributes to grain filling, and in some cases may provide a significant proportion of grain yield, by far the greatest contribution is usually from photosynthesis after anthesis by the ear, leaves, and stem (see for example Porter, Pal, and Martin, 1950;Thorne, 1963;Carr and Wardlaw, 1965;Allison and Watson, 1966). Figure 4-8, from Asana (1966), demonstrates this point in relation to wheat, showing that virtually all the increase in dry weight after anthesis is associated with grain filling.…”

Source-sink relationships in maize grown in a cool-temperate area

“…In Rhodesia (now Zimbabwe), Allison and Watson (1966) and Allison et al (1975) reported that a large amount of stem dry matter which could be translocated to the grain remains without remobilisation, indicating a sink limitation.…”

Physiological observations of maize (Zea mays L.) genotypes differing in source-sink ratios

“…Decreasing source strength by shading or removing the leaves often results in an increase in leaf CER of che remaining leaves (Sweet and Wareing, 1966;Allison and Watson, 1966;Wareing et al, 1968;Thorne and Koller, 1974;Sanders et al, 1977) and a delay in leaf senenscence (Petrie et al, 1939;Maggs, 1964;Hopkinson, 1966;Hodgkinson, 1974).…”

“…Decreasing the source by shading or removal of the leaves has also been shown to delay leaf senescence (Hopkinson, 1966;Hodgkinson, 1974) and increase photosynthesis (Allison and Watson, 1966;Wareing et al, 1968).…”