Dry‐Matter Accumulation in Corn (Zea mays L.) Plants: Comparisons among Single‐Cross Hybrids 1

1969 ◽  
Vol 61 (6) ◽  
pp. 947-951 ◽  
Author(s):  
J. J. Hanway ◽  
W. A. Russell
Keyword(s):  
Zea Mays ◽  
Dry Matter ◽  
Zea Mays L ◽  
Dry Matter Accumulation ◽  
Single Cross ◽  
Single Cross Hybrids

EFFECTS OF TEMPERATURE ON RATE AND DURATION OF KERNEL DRY MATTER ACCUMULATION OF MAIZE

1988 ◽  
Vol 68 (4) ◽  
pp. 935-940 ◽  
Author(s):  
M. TOLLENAAR ◽  
T. W. BRUULSEMA
Keyword(s):  
Growth Rate ◽  
Zea Mays ◽  
Dry Matter ◽  
Zea Mays L ◽  
Dry Weight ◽  
Controlled Environment ◽  
Dry Matter Accumulation ◽  
Linear Kernel ◽  
Effects Of Temperature ◽  
Kernel Growth

The response of rate and duration of kernel dry matter accumulation to temperatures in the range 10–25 °C was studied for two maize (Zea mays L.) hybrids grown under controlled-environment conditions. Kernel growth rates during the period of linear kernel growth increased linearly with temperature (b = 0.3 mg kernel−1 d−1 °C−1). Kernel dry weight at physiological maturity varied little among temperature treatments because the increase in kernel growth rate with increase in temperature was associated with a decline in the duration of kernel growth proportional to the increase in kernel growth rate.Key words: Zea mays L, period of linear kernel dry matter accumulation, controlled-environment conditions, kernel growth rate

scholarly journals Heterotic expression in inbreds derived from four different base populations in maize (Zea mays L.).

1970 ◽  
pp. 10-15
Author(s):  
B. Bharathiveeramani ◽  
M. Prakash ◽  
A. Seetharam
Keyword(s):  
Zea Mays ◽  
Combining Ability ◽  
Zea Mays L ◽  
Commercial Exploitation ◽  
Single Cross ◽  
Standard Heterosis ◽  
Maize Inbreds ◽  
Hybrid Mixtures ◽  
Single Cross Hybrids

The concepts of combining ability and heterosis are the fundamental tools for enhancing productivity of different crops. The main objective is to study the usefulness of inbreds derived from four different base populations namely advanced generations of single cross hybrids, three way cross hybrids, hybrid mixtures and composites by analyzing the combining ability of inbreds and crosses derived and the heterosis obtained for important characters. One hundred and forty four maize inbreds derived from four different base populations namely advanced generations of single cross hybrids, three way cross hybrids, hybrid mixtures and composites were studied for their heterotic expression. The results indicated that composite and hybrid mixture base populations shall be of great use in deriving genetically divergent inbreds and single cross hybrids with significant standard heterosis suitable for commercial exploitation.

scholarly journals Genetic Testing of Inbred Lines and Single Cross Hybrids against Fusarium Stalk Rot Caused by Fusarium moniliforme in Maize (Zea mays L.)

2021 ◽  
Vol 10 (11) ◽  
pp. 352-361
Author(s):  
R. Archana H. C. Lohithaswa ◽  
R. Pavan B. N. Swathi ◽  
N. Mallikarjuna
Keyword(s):  
Zea Mays ◽  
Genetic Testing ◽  
Fusarium Moniliforme ◽  
Zea Mays L ◽  
Inbred Lines ◽  
Yield Potential ◽  
Disease Score ◽  
Stalk Rot ◽  
Single Cross ◽  
Single Cross Hybrids

Globally, Maize (Zea mays L.) is a third major cereal food crop. It is a multipurpose crop with 26% of its production is used as food by human beings. Maize is known as “queen of cereals”, because of its high genetic yield potential, efficient utilization of radiant energy and wider adaptability. About 65 different phytopathogens affect the maize production in different stages of life cycle. Among which Fusarium moniliforme is one such soil borne pathogen causes Fusarium stalk rot (FSR) disease that ultimately reduces maize yield potential over the world. In any breeding program, screening and genetic testing of available germplasm resources against pathogens is necessary to prevent yield losses. Hence, the present research screened around 114 maize inbred lines and 45 single cross hybrids (SCHs) against FSR under artificial epiphytotic conditions. Among 114 inbreds, only four inbreds viz., CM 202, 10878, MAI-759 and MAI-766 (mean disease score of 3-4) showed moderately resistant reaction and out of 45 SCHs, only one hybrid combination i.e., MAI329 × CM202 (mean disease score was 2.60) exhibited resistance reaction against Fusarium stalk rot. Nevertheless, these resistance sources could be utilized in maize breeding programs for obtaining high yielding cultivars with resistance towards FSR disease.

Influence of Cytoplasmic Male Sterility on Dry Matter Accumulation in Maize ( Zea mays L.) 1

Crop Science ◽  
1965 ◽  
Vol 5 (4) ◽  
pp. 365-367 ◽  
Author(s):  
C. O. Grogan ◽  
Patricia Sarvella ◽  
J. O. Sanford ◽  
H. V. Jordan
Keyword(s):  
Zea Mays ◽  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Dry Matter ◽  
Zea Mays L ◽  
Dry Matter Accumulation

scholarly journals GROWTH AND YIELD OF MAIZE (Zea mays L.) GROWN OUTDOORS HYDROPONICALLY AND IN SOIL

1989 ◽  
Vol 69 (2) ◽  
pp. 295-302 ◽  
Author(s):  
M. H. MILLER ◽  
G. K. WALKER ◽  
M. TOLLENAAR ◽  
K. G. ALEXANDER
Keyword(s):  
Zea Mays ◽  
Soil Temperature ◽  
Dry Matter ◽  
Zea Mays L ◽  
Sandy Loam ◽  
Growth And Yield ◽  
Dry Matter Accumulation ◽  
Medium Temperature ◽  
Hydroponic System ◽  
Two Systems

Maize (Zea mays L.) was grown outdoors hydroponically and in soil to compare yields in the two systems and to determine the extent to which soil temperature and plant nutrition limit yield of soil-grown plants. The hydroponic system consisted of 22.5-L plastic pails filled with "Turface" to which nutrient solution was added at least twice daily. In all 3 yr dry-matter accumulation throughout the growing season was greater on the hydroponic system than in well-fertilized, irrigated sandy-loam soil when planting pattern and density were the same. Maximum aboveground dry matter and grain dry matter on the hydroponic system were 25.8 and 12.2 Mg ha−1, respectively. It is apparent that there is a soil-based constraint that limits aboveground dry-matter production to 75–85% of the potential with the aboveground environment in the region. Grain yield appears to be limited to a lesser extent. To determine the effect of root-medium temperature, growth in pails buried in the soil was compared to that in soil and in pails placed on the soil surface. Although the temperature of the buried pails was consistently lower than that in the aboveground pails and in the soil, dry matter accumulation was similar to that in the aboveground pails indicating that soil temperature was not a cause of the lower yield of the soil-grown plants. There was no evidence that plants growing on the highly fertilized soil were nutrient limited at any growth stage. Other studies have indicated that transient water stress on soil-grown plants will not explain the difference in growth on the two systems. Key words: Maize, hydroponics, soil limitations, soil temperature, nutrition

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