Impact of climatic factors at specific growth stages on soybean soyasaponin I concentration

2020 ◽  
pp. 1-5
Author(s):  
Ruixue Tang ◽  
Philippe Seguin ◽  
Malcolm Morrison ◽  
Elise Smedbol
Keyword(s):  
Glycine Max ◽  
Field Study ◽  
Air Temperature ◽  
Growth Stage ◽  
Specific Growth ◽  
Climatic Factors ◽  
Critical Threshold ◽  
Growth Stages ◽  
Temperature And Precipitation ◽  
Glycine Max L

Soybean [Glycine max (L.) Merr.] is an important source of health-beneficial compounds, including soyasaponin I. A field study was conducted for 11 yr in Ottawa, ON, Canada, to assess the impacts of temperature and precipitation during specific growth stage intervals on soyasaponin I concentration in three soybean cultivars. Soyasaponin I concentration response to air temperature and precipitation variables were observed at specific growth stage intervals for some cultivars. The response was complex and cultivar specific. Overall, reproductive stages were more responsive and 20 °C appeared to be a critical threshold in determining soybean soyasaponin I concentration response to air temperature.

EFFECT OF SELECTION FOR PROTEIN ON LENGTHS OF GROWTH STAGES IN Glycine max × Glycine soja CROSSES

1982 ◽  
Vol 62 (2) ◽  
pp. 293-298 ◽  
Author(s):  
L. R. ERICKSON ◽  
W. D. BEVERSDORF
Keyword(s):  
Glycine Max ◽  
Protein Content ◽  
Growth Stage ◽  
Seed Protein ◽  
Glycine Soja ◽  
Growth Stages ◽  
Seed Protein Content ◽  
Glycine Max L ◽  
The Mean ◽  
Selection For

The effect of selection for high seed protein content on plant development in soybeans (Glycine max (L.) Merr.) was investigated by comparing the lengths of growth stages of four selected populations with those of a nonselected control. Each population, grown at two locations in one season, was a composite of four crosses between G. max and its putative wild ancestor, Glycine soja Sieb. and Zucc. The growth stages were planting to emergence, emergence to flowering and flowering to maturity. The length of each growth stage was measured in soybean development units (SDU) and in days. On average, populations selected for protein alone required more SDUs from planting to emergence and from emergence to flowering and fewer SDUs from flowering to maturity than did the control. The mean temperature in the stage from flowering to maturity was negatively correlated with protein content in all populations. The correlations ranged from −0.22* to −0.34**.

INFLUENCE OF SINGLE STRAINS AND A COMMERCIAL MIXTURE OF Bradyrhizobium japonicum ON GROWTH, NITROGEN ACCUMULATION AND NODULATION OF TWO EARLY-MATURING SOYBEAN CULTIVARS

1988 ◽  
Vol 68 (2) ◽  
pp. 411-418 ◽  
Author(s):  
L. D. BAILEY
Keyword(s):  
Glycine Max ◽  
Soil Temperature ◽  
Bradyrhizobium Japonicum ◽  
Nodule Formation ◽  
Growth Stages ◽  
Nitrogen Accumulation ◽  
Plant Nitrogen ◽  
Commercial Mixture ◽  
Early Maturing ◽  
Glycine Max L

Seven single strains and a commercial mixture of Bradyrhizobium japonicum were evaluated in association with two early-maturing Canadian soybean (Glycine max (L.) Merrill) cultivars, Maple Presto and Maple Amber. Inoculated and uninoculated plants were grown in pails outdoors. Soil temperature at 15 cm depth was monitored throughout the experiment. At the V2, V3, R2 and R4 growth stages, whole plants were removed from the pails. Nodules were counted and weighed; roots and tops were separated, weighed and analyzed for total nitrogen. Bradyrhizobium japonicum strains 61A148, 61A196, 61A194 and 61A155 were similar in effectiveness, but superior to strains 61A124a, 61A118b, 61A101c and the commercial mixture in earliness of nodule formation, number and weight of nodules per plant, and in promoting greater root and top growth and plant nitrogen accumulation. There were indications that soil temperature may have affected nodulation. Maple Amber showed the greater potential for symbiotic nitrogen fixation. This cultivar supported earlier nodulation, had a greater number of nodules, accumulated more nitrogen in the tops and roots and had greater growth than Maple Presto.Key words: Soybean, Glycine max (L.) Merrill, soil temperature, soybean growth stages, Bradyrhizobium, nodulation

scholarly journals Can temperatures from an online weather forecast service be suitable for modelling growth stages using a CERES-Wheat type phenology model?

2017 ◽  
Vol 8 (2) ◽  
pp. 684-688
Author(s):  
M. Launspach ◽  
J.A. Taylor ◽  
J. Wilson
Keyword(s):  
Air Temperature ◽  
Plant Development ◽  
Weather Forecast ◽  
Growth Stages ◽  
North East ◽  
Temperature Forecast ◽  
Temperature And Precipitation ◽  
Station Data ◽  
Forecast Data ◽  
Phenology Model

Weather and climate have a fundamental impact on plant development. Monitoring key observables, e.g. temperature and precipitation, is paramount for the interpretation of agricultural experiments and simulation of plant development. Whereas the presence of appropriate sensors in a research environment can be expected, the situation can be different in commercial agricultural settings. Local air temperature from online weather forecasts is investigated as a substitute for local weather station data. Hourly air temperature forecast and station data for several locations in Scotland and North East England are aggregated into daily air temperature values spanning a period of several months. Dates for key growth stages using temperatures from weather stations and weather forecast data are compared. For the examples discussed here the date differences in modelled key growth stages did not exceed 3 days indicating that temperature forecast data is suitable for farm-specific applications.

scholarly journals Study in the Responses of-Some Soybean (Glycine max L.) Cultivars Under Water Stress Condition

1970 ◽  
Vol 4 (1) ◽  
Author(s):  
EDI PURWANTO
Keyword(s):  
Glycine Max ◽  
Water Stress ◽  
Field Condition ◽  
Growth Stages ◽  
Soybean Cultivars ◽  
Shoot Ratio ◽  
Root Shoot Ratio ◽  
Water Stress Condition ◽  
Root And Shoot Length ◽  
Glycine Max L

These sets of experiments were conducted at Faculty of Agriculture Sebelas Maret University and the Central Experiment Station of Agricultural Faculty, Sebelas Maret University at Jumantono, Karanganyar, Central Java. The experiments were conducted under greenhouse, laboratory and field condition for each year, while the duration of this research was for two years. The specific objectives of the experiments were: (i) to determine the changes of some morpho-physiological characteristics of water stress soybean and those of unstressed plants at different growth stages; (ii) to evaluate relationship between morpho-physiological traits associated with water stress resistance and yield of soybean. In this study consists some experiments, there are: (i) about response of some soybean cultivars to water stress in screen house and field condition; (ii) about germination response of some soybean cultivars in different concentration 0f PEG; (iii) a bout recovery survival and recovery of soybean seedlings after heat treatment. The plants were well watered before thetreatment. Based on the result of the experiments, the following conclusion could be made: (i) water stress reduced growth, yield and yield components 0 f a II soybean c ultivars used; (li) PEG induced water stress resulted in lower germination, shorter root and shoot length, and increase root-shoot ratio; (iii) the ability of plants to recovery after heat stress have low correlation with drought resistance in this experiment; (iv) the determination of root-shoot ratio in the seedling stage was shown to be suitable screening techniques used to study water stress resistance.© 200'3Jurusan Biologi FMIPA UNS SurakartaKey words: soybean (Glycine max L.), cultivars, water stress.

Propagation of Thuja × `Green Giant' by Stem Cuttings: Effects of Growth Stage, Type of Cutting, and IBA Treatment

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 504a-504 ◽  
Author(s):  
Jason J. Griffin ◽  
Frank A. Blazich ◽  
Thomas G. Ranney
Keyword(s):  
Root Length ◽  
Growth Stage ◽  
Specific Growth ◽  
Growth Stages ◽  
Stem Cuttings ◽  
Indolebutyric Acid ◽  
Rooted Cutting ◽  
Auxin Treatment

Stem cuttings of Thuja L. × `Green Giant', consisting of 22-cm terminals or 20-cm laterals, were collected on three dates associated with specific growth stages (softwood, semi-hardwood, and hardwood), and treated with indolebutyric acid (IBA) in 50% isopropanol ranging from 0 to 9000 ppm and placed under intermittent mist. Regardless of cutting type or auxin treatment, cuttings rooted in high percentages at each growth stage. Overall rooting was highest for hardwood cuttings (96%) followed by semi-hardwood (86%), and softwood (85%) cuttings. Semi-hardwood cuttings were the only cuttings in which rooting was affected by IBA or cutting type with the greatest rooting (94%) attained using lateral cuttings treated with 6000 or 9000 ppm IBA. Although an interaction occurred between IBA treatment and cutting type for mean root length of hardwood cuttings, only mean root length of semi-hardwood cuttings was influenced by IBA concentration alone with the greatest length (25 mm) achieved with 6000 ppm IBA. An interaction was noted for root count between cutting type and IBA concentrations for softwood cuttings, whereas IBA and cutting type affected independently root count on semi-hardwood cuttings. Treatment with 9000 ppm IBA resulted in 18 roots per rooted cutting whereas lateral cuttings responded with a mean of 16 roots over all IBA concentrations. Root count on hardwood cuttings was affected by IBA treatment only, with 9000 ppm being optimum (14 roots per rooted cutting).

Biomass and nutritive value of forage soybean lines [Glycine max L. (Merr.)] in northwestern Puerto Rico.

1969 ◽  
Vol 99 (1) ◽  
pp. 19-36
Author(s):  
Alfredo Aponte ◽  
Elide Valencia-Chin ◽  
James Beaver
Keyword(s):  
Glycine Max ◽  
Chemical Composition ◽  
Nutritive Value ◽  
Neutral Detergent Fiber ◽  
Soybean Line ◽  
Planting Dates ◽  
Temperature And Precipitation ◽  
Two Factors ◽  
Principal Factors ◽  
Glycine Max L

Ten lines of forage soybean [Glycine max L. (Merr.)] were evaluated using two planting dates (PD) in September and January; and two crop harvest physiological stages (CHPS), R2 (full bloom) and R5.4 (most pods 51 to 75% full), a total area of 496 m2 with an Oxisol soil, under conditions of temperature and precipitation not limiting crop growth. The experimental design was one of split plots in randomized complete blocks, PD constituting the complete plots, CHPS the subplots, and soybean lines the sub-subplots. Dry matter yields (DMY) were higher (P menor que 0.01) for R5.4 than R2 (6,452 vs. 5,436 kg/ha), fluctuated (P menor que 0.058) from 5,300 to 6,573 kg/ha among the soybean lines and did not differ between the two PD. Plant populations were about 260,000 kg/ha and were not affected by the three principal factors. Plant height varied (P menor que 0.01) from 84.2 to 93.2 cm among the soybean lines; differed (P menor que 0.05) between the two PD (89.2 cm, September vs. 87.5 cm, January) and (P menor que 0.01) between the two CHPS (72.4 cm, R2 vs. 104.3 cm, R5.4); and was also affected by all of the double and the triple interactions of the three factors. The proportion of leaf in the total DM favored (P menor que 0.01) R2 over R5.4 (44.1 vs. 41.1%) and involved an interaction (P menor que 0.05) of CHPS x soybean line. Regarding the chemical composition of the forage, crude protein (CP) varied among the soybean lines (P menor que 0.05) and between the CHPS (P menor que 0.01) and was affected (P menor que 0.01) by an interaction of these two factors (29.6 to 33.6, R2 and 23.1 to 26.7, R5.4). Acid detergent fiber (ADF) behaved like a CP with respect to significance of the independent variables (21.0 to 25.6, R2 and 26.2 to 33.3, R5.4); whereas neutral detergent fiber (NDF) did not differ among soybean lines, but was higher (P menor que 0.01) for R5.4 than for R2 (41.0 vs. 33.5), and involved an interaction (P menor que 0.01) of CHPS x soybean line. It is concluded that, according to both agronomic characteristics and chemical composition, all the soybean lines evaluated performed adequately, but SF-6, SF-24, SF-50, SF-88 and SF-110 outperformed SF-1, SF-2, SF-22, SF-57 and SF-72; harvest at the R5.4 stage was advantageous in achieving greater DMY without unduly sacrificing the excellent chemical composition of R2 forage; and the magnitude of PD effects was not large.

Performance of BAS 9052 Applied to Johnsongrass (Sorghum halepense) and Soybeans (Glycine max)

Weed Science ◽  
1983 ◽  
Vol 31 (6) ◽  
pp. 796-800 ◽  
Author(s):  
E. James Retzinger ◽  
R. Larry Rogers ◽  
Ronald P. Mowers
Keyword(s):  
Glycine Max ◽  
Growth Stage ◽  
Soybean Seed ◽  
Moisture Stress ◽  
Sorghum Halepense ◽  
Growth Stages ◽  
Exponential Equation ◽  
Yield Increase ◽  
Relationship Of ◽  
The Relationship

The performance of BAS 9052 {2-[1-(ethoxyimino)-butyl]-5-[2-(ethylthio)-propyl]-3-hydroxy-2-cyclohexen-1-one} was evaluated when applied postemergence to rhizome and seedling johnsongrass [Sorghum halepense(L.) Pers. # SORHA] in soybeans [Glycine max(L.) Merr. ‘Bragg’ and ‘Centennial’] when the soybeans had four or five trifoliate leaves (V3 to V4 stages) or when they had six to eight trifoliate leaves (V5 to V7 growth stages). The degree of weed control was more strongly associated with rainfall conditions than with the size of the johnsongrass. An exponential equation was used to describe the relationship of soybean seed yield to BAS 9052 rate. BAS 9052 applications of 0.28 kg ai/ha provided an estimated 98% of the potential soybean yield increase when rainfall was adequate but, 0.41 kg ai/ha was required when the plants were grown under moisture stress. Soybean yields were increased by 260 kg/ha when BAS 9052 was applied at the V3 to V4 compared to the V5 to V7 growth stage.

Efficacy ofColletotrichum coccodesand Thidiazuron for Velvetleaf (Abutilon theophrasti) Control in Soybean (Glycine max)

1988 ◽  
Vol 2 (4) ◽  
pp. 473-480 ◽  
Author(s):  
Richard H. Hodgson ◽  
Lee A. Wymore ◽  
Alan K. Watson ◽  
Robert H. Snyder ◽  
Anne Collette
Keyword(s):  
Glycine Max ◽  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Growth Stage ◽  
Pathogenic Fungus ◽  
Abutilon Theophrasti ◽  
Colletotrichum Coccodes ◽  
Growth Stages ◽  
Wet Weather

The plant pathogenic fungusColletotrichum coccodes(Cc) and the plant growth regulator thidiazuron (TDZ) were evaluated in Maryland and Quebec for velvetleaf control in ‘Williams' and ‘Maple Arrow’ soybean. TDZ was applied at 0, 0.1, 0.2, 0.3, and 0.4 kg ai/ha alone or was combined with Cc at 109spores/m2when velvetleaf was at the 1- to 2-leaf (Trial 1) or 4- to 6-leaf (Trial 2) growth stages. Velvetleaf control increased with TDZ rate, and TDZ combined with Cc further increased control. TDZ reduced velvetleaf biomass and height, and Cc increased velvetleaf mortality. In Quebec, Cc also reduced the biomass of velvetleaf treated in Trial 1 and interacted positively with TDZ at this growth stage. Cc nearly halved the rates of TDZ required for 90 and 75% mortality of velvetleaf treated at the 1- to 2-leaf and 4- to 6-leaf stages to 0.09 and 0.12 kg/ha, respectively, in Quebec. Cc similarly lowered the rate of TDZ required for 75% stand reduction of velvetleaf in Trial 1 to 0.17 kg/ha in Maryland. Cool wet weather in Quebec contrasted with warm, dry weather in Maryland. Soybean biomass and yield were increased significantly by treatment with TDZ plus Cc in Trial 1 at both locations.

Analysis of quantitative trait loci underlying the period of reproductive growth stages in soybean (Glycine max [L.] Merr.)

Euphytica ◽  
2008 ◽  
Vol 162 (2) ◽  
pp. 155-165 ◽  
Author(s):  
Da-Wei Xin ◽  
Hong-Mei Qiu ◽  
Da-Peng Shan ◽  
Cai-Yun Shan ◽  
Chun-Yan Liu ◽  
...  
Keyword(s):  
Glycine Max ◽  
Quantitative Trait Loci ◽  
Quantitative Trait ◽  
Growth Stages ◽  
Reproductive Growth ◽  
Trait Loci ◽  
Glycine Max L
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