Wheat, Soybean, and Oat Germination Studies with Particular Reference to Temperature Relationships<sup>1</sup>

Wilson, H. K.

doi:10.2134/agronj1928.00021962002000060006x

Cited by 10 publications

(8 citation statements)

References 3 publications

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“…Soybean generally has been reported to have an optimum temperature for germination of 25 to 30 C, similar to that found here (Edward 1934;Tyagi and Tripathi 1983;Wilson 1928). Our results are also in agreement with a previous study (Teem et all 1980) that showed that sicklepod germinated over a relatively wide temperature range (15 to 39 C), with germination efficiency dropping precipitously between 21 and 18 C. Keeley et all (1987) reported that percent germination of Palmer amaranth was low at low temperatures (16/10 C), increased with increasing temperature up to 27/21 C, then declined at 32/27 C before finally reaching a maximum percentage at 38/32 C. Perhaps if we had used a higher temperature we would have seen this same response curve for Palmer amaranth.…”

Section: Germinationsupporting

confidence: 84%

Comparative responses of soybean (Glycine max), sicklepod (Senna obtusifolia), and Palmer amaranth (Amaranthus palmeri) to root zone and aerial temperatures

et al. 1999

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Experiments were conducted to compare germination efficiencies and vegetative growth of soybean and the competing weed species, sicklepod and Palmer amaranth, over a range of temperatures in the root zone and aerial environments. From genetic origins we hypothesized that the weeds would have a higher temperature optimum, which would help explain competitive interactions seen in the southeastern U.S. Germination experiments indicated that germination efficiency of the weeds was much more sensitive to low temperature than soybean, being markedly inhibited below 18 C. Similarly, experiments in an automated, temperature-controlled hydroponic system revealed that the weed species were less tolerant of low root zone temperature but more tolerant of high root zone temperature than soybean. At 16 C, dry weight of soybean was 74% of the control dry weight at 24 C, whereas dry weights of sicklepod and Palmer amaranth were 5 and 20% of the control, respectively. At 32 C, soybean root dry weight was only 80% of the 24 C treatment, whereas root dry weight of the weed species was not significantly different. When plants were grown at a low aerial temperature, growth of all plants was strongly inhibited] but the negative effects were somewhat more severe in the weed species than with soybean. An increase in aerial temperature from 26/22 C to 34/30 C (day/night) had a positive influence on dry matter accumulation of the weed species, stimulating sicklepod 150 to 200% and Palmer amaranth 150 to 1,600% compared to their respective controls, whereas soybean remained at about 80 to 90% of the control. All species grew taller with increasing temperature. Leaf area of the weeds increased but leaf area of soybean did not increase. Consistent with our original hypothesis, the results clearly show that the weeds, which originate from warm geographical regions, respond more negatively than soybean to low temperatures in the growth environment but more positively to high temperatures. The temperature characteristics help to explain why the intensity of weed pressure increases as the soybean growing season progresses, even after canopy closure.

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Section: Germinationsupporting

confidence: 84%

Comparative responses of soybean (Glycine max), sicklepod (Senna obtusifolia), and Palmer amaranth (Amaranthus palmeri) to root zone and aerial temperatures

et al. 1999

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“…Most other evidence for the effect of temperature comes from cereal studies. An early study by Wilson (1928) indicated that temperature between 10"and 30°C were suitable for wheat and soybean germination. In contrast, Edward (1934) reported 33°C as optimum for the maximum "germination in the shortest time" for soybean.…”

Section: Resultsmentioning

confidence: 99%

Changes in Oligosaccharide Content, Enzyme Activities and Dry Matter during Controlled Germination of Cowpeas (Vigna Unguiculata)

Nnanna

Phillips

1988

Journal of Food Science

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Cowpeas were germinated at 25, 30, and 35°C for 12, 24, 48, and 72 hr. Stachyose disappeared after 48 hr germination at 30°C while 85 and 95% reductions occurred at 35°C for 48 and 72 hr. respectively. Total oligosaccharide reduction was significantly greater at 30°C than at 25°C. Protease and amylase activities and rootlet development were minimal after 24 hr germination but increased thereafter. Anerobic incubation was ineffective in furthering reduction of olicosaccharides in seeds germinated at 25 or at 30°C for 12 or 24 hr. Total protein and carbohydrate contents were relatively unaffected.

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“…He reported that 30°C gave the maximum germination in the shortest time period. Wilson (1928) found that differences in temperature could reveal differences in vigor levels of seed lots. He reported that high vigor seeds germinated equally well at 10°, 15®, 25°, and 30°C.…”

Section: Growth Rate Testsmentioning

confidence: 99%

Physiological and biochemical changes and field performance of deteriorated soybean seeds

Edje

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Wheat, Soybean, and Oat Germination Studies with Particular Reference to Temperature Relationships¹

Cited by 10 publications

References 3 publications

Comparative responses of soybean (Glycine max), sicklepod (Senna obtusifolia), and Palmer amaranth (Amaranthus palmeri) to root zone and aerial temperatures

Comparative responses of soybean (Glycine max), sicklepod (Senna obtusifolia), and Palmer amaranth (Amaranthus palmeri) to root zone and aerial temperatures

Changes in Oligosaccharide Content, Enzyme Activities and Dry Matter during Controlled Germination of Cowpeas (Vigna Unguiculata)

Physiological and biochemical changes and field performance of deteriorated soybean seeds

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Wheat, Soybean, and Oat Germination Studies with Particular Reference to Temperature Relationships1

Cited by 10 publications

References 3 publications

Comparative responses of soybean (Glycine max), sicklepod (Senna obtusifolia), and Palmer amaranth (Amaranthus palmeri) to root zone and aerial temperatures

Comparative responses of soybean (Glycine max), sicklepod (Senna obtusifolia), and Palmer amaranth (Amaranthus palmeri) to root zone and aerial temperatures

Changes in Oligosaccharide Content, Enzyme Activities and Dry Matter during Controlled Germination of Cowpeas (Vigna Unguiculata)

Physiological and biochemical changes and field performance of deteriorated soybean seeds

Contact Info

Product

Resources

About

Wheat, Soybean, and Oat Germination Studies with Particular Reference to Temperature Relationships¹