Maturation in Corn<sup>1</sup>

Dessureaux, L.; Neal, N. P.; Brink, R. A.

doi:10.2134/agronj1948.00021962004000080007x

Cited by 9 publications

(8 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nevertheless the results presented here clarify some of the apparent discrepancies in American evidence. Thus, 35 % water content in the grain is the most widely accepted figure relating to maximum seed dry weight (physiological maturity) in the U.S.A.; when physiological maturity has been reached at higher grain water contents (40-42%) the observations have been made in northern areas of U.S.A. (Rather & Marston, 1940;Dessureaux et al 1948) or on late flowering varieties (Shaw & Loomis, 1950;Duncan, 1966). It is probable therefore that the differences reported in the U.S.A. also reflect differences in environmental conditions during ripening.…”

Section: Discussionmentioning

confidence: 99%

“…Some varieties grown for generally accepted in U.S.A. (Duncan 1966), but grain in England are susceptible to infection by the water content of the grain at this stage has been stalk rot fungi (Ftisarium sp.) and this can lead to reported at levels ranging from below 30% to more than 40% (Rather & Marston, 1940;Aldrich, 1940;Aldrich, 1943;Dessureaux, Neal & Brink, 1948;Shaw & Loomis, 1950;Hallauer & Russell, 1962).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ripening in maize: interrelationships between time, water content and weight of dry material in ripening grain of a flint × dent hybrid (Inra 200)

Bunting

1972

J. Agric. Sci.

View full text Add to dashboard Cite

SUMMARYResults are reported of ripening studies with maize (var. Inra 200) at Oxford, 1967–9. Sowings were made in late April or early in May, and crops grown at a standard density of 7–2 plants/m2. Areas were provided with cloche protection, for a 4- to 5-week period from time of sowing, to produce material for studies of the effects of flowering time on ripening patterns. From plants of known flowering date collections of 30–40 ears were taken at intervals from 30 until 100+ days after silking.Information is presented on water content, grain dry weight and number of grains/ear at the various times of harvest. Asymptotic, polynomial and inverse-polynomial regression models have been fitted to the data to elucidate the interrelationships between time (measured from date of silking), grain water content and grain dry weight.In plants flowering in mid-July grain continued to increase in dry weight until water content was reduced to 35 %, whereas in plants flowering early in August maximum dry weight was attained at a water content of around 40 %.Maximum dry weight of grain was approximately 10% higher in the earlier flowering plants; the corollary is that in the marginal areas of maize grain production in England maturity in such varieties as Inra 200 is often imposed by the environment with a consequent loss in potential yield.In the early flowering plants, the time taken from silking to reach the harvestable stage of 40 % grain water content was 69 d in 1967, 79 d in 1968 and 64 d in 1969. Rate of water loss from the grain during ripening was closely related to prevailing air temperatures. In the later flowering plants, differing by an average of 11 d in time of silking, 8 days longer was required for grain to be reduced to 40% water content, giving an average difference of 19 days in permissible dates of harvest.The results suggest that, in varieties of similar ripening pattern to Inra 200, an advance of about 7 days in flowering time is required to establish the maize grain crop beyond its present confines in south-east England.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ripening in maize: interrelationships between time, water content and weight of dry material in ripening grain of a flint × dent hybrid (Inra 200)

Bunting

1972

J. Agric. Sci.

View full text Add to dashboard Cite

show abstract

“…Rench and Shaw (1971) described the point of maximum physiological quality of corn seeds with moisture content and dry weight accumulation, and observed that those characteristics vary with genotype and seeding date. Several authors (Dessureaux, 1948;Shaw and Thom, 1951;Hallauer and Russel, 1961;Gunn and Christensen, 1965;Hillson and Penny, 1965;Andrew, 1965;Daynard and Duncan, 1969;Daynard, 1971) used 100 or more seeds from each ear to define the time of maximum seed dry weight. According to Daynard and Duncan (1969), the black layer method was considered most useful to evaluate maximum seed dry weight.…”

Section: Introductionmentioning

confidence: 99%

Milk line as an indicator of the harvesting time of three hybrid seeds of corn (Zea mays L.)

Santos

Dalpasquale

Scapim

et al. 2005

Braz. arch. biol. technol.

View full text Add to dashboard Cite

show abstract

“…Wide variability in length of the preflowering period results in the most important basis of selection for early maturity (Dessureaux et al, 1948). Corn has a determinate growth pattern and the vegetative stage ends with the initiation of the terminal inflorescence (Kiesselbach, 1949).…”

mentioning

confidence: 99%

Heterosis for Flowering Time and Agronomic Traits among Early Open-pollinated Sweet Corn Cultivars

Dickert¹,

Tracy²

2002

jashs

View full text Add to dashboard Cite

Heterosis in corn (Zea mays L.) usually results in earlier flowering, larger plants, and increased yield. In extremely early sweet corn the effect of heterosis on flowering time may be reduced or eliminated due to developmental and physiological requirements for vegetative growth before the transition to reproductive phase. The objective of this study was to determine the level of heterosis and the combining ability for flowering time and other agronomic traits in a diallel cross of six very early open-pollinated sweet corn cultivars. The diallel was grown in 1995 and 1996. Hybrids and parents averaged over hybrids differed for silk date, plant height, ear height, 10-ear weight, ear length, and 100-kernel weight but did not differ for row number and ear width. Heterosis for silk date was significant, but the difference between parents and hybrids was very small, 0.5 day. No hybrids were earlier than the earliest parent, and average midparent heterosis was -0.8%. In contrast midparent heterosis was significant and relatively high for 100-kernel weight (10.0%), ear length (12.9%), ear height (8.6%), plant height (9.0%), and 10-ear weight (28.2%). The traits with low heterosis had very high general combining ability/specific combining ability ratios while these ratios were much smaller in traits with high heterosis. Heterosis for many of the traits, including 10-ear weight, was higher than published values. Conversely, heterosis for flowering time was small, compared to other traits in this study and to published values for silk date, indicating that this extremely early germplasm may be at or near the limit for flowering time under the photoperiod and temperatures typical of summer in Madison, Wis. (43.05°N, 89.31°W).

show abstract

Maturation in Corn¹

Cited by 9 publications

References 0 publications

Ripening in maize: interrelationships between time, water content and weight of dry material in ripening grain of a flint × dent hybrid (Inra 200)

Ripening in maize: interrelationships between time, water content and weight of dry material in ripening grain of a flint × dent hybrid (Inra 200)

Milk line as an indicator of the harvesting time of three hybrid seeds of corn (Zea mays L.)

Heterosis for Flowering Time and Agronomic Traits among Early Open-pollinated Sweet Corn Cultivars

Contact Info

Product

Resources

About

Maturation in Corn1

Cited by 9 publications

References 0 publications

Ripening in maize: interrelationships between time, water content and weight of dry material in ripening grain of a flint × dent hybrid (Inra 200)

Ripening in maize: interrelationships between time, water content and weight of dry material in ripening grain of a flint × dent hybrid (Inra 200)

Milk line as an indicator of the harvesting time of three hybrid seeds of corn (Zea mays L.)

Heterosis for Flowering Time and Agronomic Traits among Early Open-pollinated Sweet Corn Cultivars

Contact Info

Product

Resources

About

Maturation in Corn¹