Sucrose Content in the Stalks of Maize Inbreds¹

The sugar, biomass and biofuel potential of temperate by tropical maize hybrids

“…Conversely, hybrids that had the earshoots removed produced 50% less biomass than the other hybrid types, but had the same amount of sugar as the TTM hybrids grown in 2008 that contained some grain (Table 3) similar to the findings of Crafts- Brandner et al, 1984. This suggests that maximum sugar production can only be achieved by preventing TTM hybrids from forming grain, which has been recognized in earlier studies (Van Reen & Singleton, 1952;Hume & Campbell, 1972;D'ayala Valva et al, 1980). As a result, the earshoot-bagged TTM grown in 2009 accumulated significantly more stalk sugar (Table 4) than those grown in 2008, which produced some grain (Table 3).…”

Physiological and morphological responses of corn genotypes to planting date and plant population

“…high plant population, detasseling and male sterility; has been attributed to the differential accumulation of dry matter (Sowell ^ 1961, Moss andStinson 1961), rate of silk emergence (Sass and Loeffel 1959), ear primordia growth (Sass and Loeffel 1959, Collins 1963, Prine 1965, length of the interval between tasseling and silking (Woolley ^ 1962, Sass and Loeffel 1959, Moss and Stinson 1961, Kohnke and Miles 1951, Schwanke 1965, nitrate reductrace (Zieserl ^ 1963, Knipmeyer et 1962 and plant sugar concentrations (Van Reen and Singleton 1952, Moss and Stinson 1961, Sowell ^ 1961, and Knipmeyer e± al. 1962)» Total dry matter production per plant decreases with increased plant population was shown by Eisele (1935), Shading experiment by Moss and Stinson (1961) and Earley ^ £l.…”

“…Investigation of sugar concentrations in the stalk and leaves have for the most part been concerned with the post pollination period* In all cases barrenness has resulted in an increase in stalk sugars (Moss and Stinson 1961, Kiesselbach 1948, Loomis 1935, Barr 1939, Moss 1962, Van Reen and Singleton (1952) found the sucrose content of the lowest internode to increase rapidly from the late whorl stage through the pollination period and then decrease approxi mately three weeks after pollination. Differences in stalk sugar could not be explained in terms of amount of grain pro duced.…”

Physiological characters in maize (Zea mays L.) and their relationship to stalk rot

“…While Morris (1931) and Sayre et al (1931) reported that sucrose in maize stalks reached a peak one week before fertilization of ears and then decreased with maturity, Van Reen and Singleton (1952) found that inbred lines reached a peak of sucrose content about 3 weeks after pollination which ranged from 5-15% sucrose depending on the hybrid line. Cummins (1970) found that total available carbohydrates was high up to 3 weeks after the late milk stage and then de creased to physiological maturity.…”

“…Van Reen and Singleton (1952) reported that the first internodes above the uppermost brace roots of five inbred lines of maize at the whorl stage had less than 0.2% sucrose and 2% total sugars. Fairey and Daynard (1978a) found that the relative decline in stalk sugars increased with successive internodes up the stem, and that root dry matter contained less than 5% sugars which then decline to physiological maturity.…”