Association mapping identifies and confirms loci for soybean seed weight

Crop Science ◽  
2020 ◽  
Author(s):  
Avjinder S. Kaler ◽  
Larry C. Purcell
Keyword(s):  
Association Mapping ◽  
Seed Weight ◽  
Soybean Seed

QTL analysis of soybean seed weight across multi-genetic backgrounds and environments

2012 ◽  
Vol 125 (4) ◽  
pp. 671-683 ◽  
Author(s):  
Yingpeng Han ◽  
Dongmei Li ◽  
Dan Zhu ◽  
Haiyan Li ◽  
Xiuping Li ◽  
...  
Keyword(s):  
Qtl Analysis ◽  
Seed Weight ◽  
Soybean Seed

Effects of Insecticide, Weed-Free Period, and Row Spacing on Soybean (Glycine max) and Sicklepod (Cassia obtusifolia) Growth

Weed Science ◽  
1984 ◽  
Vol 32 (5) ◽  
pp. 702-706 ◽  
Author(s):  
Robert H. Walker ◽  
Michael G. Patterson ◽  
Ellis Hauser ◽  
David J. Isenhour ◽  
James W. Todd ◽  
...  
Keyword(s):  
Glycine Max ◽  
Seed Size ◽  
Seed Weight ◽  
Significant Interaction ◽  
Soybean Seed ◽  
Row Spacing ◽  
Fresh Weight ◽  
Cassia Obtusifolia ◽  
Insecticide Treatment ◽  
Weed Interference

Results from identical experiments conducted at Headland, AL, and Plains, GA, from 1980 through 1982 show insecticide treatment had little effect on soybean [Glycine max(L.) Merr. ‘Coker 237′] growth and morphology. Maximum insecticide applications increased soybean seed weight in two of five trials. Soybeans maintained free of sicklepod (Cassia obtusifoliaL. ♯3CASOB) for 4 weeks after emergence produced yields equal to those receiving season-long control in all trials, and 2-week control was equal to season-long maintenance in three trials. Length of weed interference-free maintenance did not affect soybean height. The number of pods per plant and seed weight were decreased when there was no control. Sicklepod shoot fresh weight and numbers decreased as the weed-free period increased from 0 weeks through the season. Row spacing had no effect on soybean height or seed size; however, the number of pods per plant was higher in 80- than in 40-cm rows. Row spacing influenced yield in only one trial where 20-cm rows outyielded 40-cm rows. A significant interaction occurred between the weed-free period and row spacing in two trials. Soybeans in 20-cm rows outyielded those in 40- and 80-cm rows when sicklepod was not controlled (i.e., 0 weeks interference-free maintenance).

Wild Oat (Avena fatua) Competition in Soybean (Glycine max)

Weed Science ◽  
1981 ◽  
Vol 29 (4) ◽  
pp. 410-414 ◽  
Author(s):  
Duane P. Rathmann ◽  
Stephen D. Miller
Keyword(s):  
Glycine Max ◽  
Seed Yield ◽  
Seed Weight ◽  
Soybean Seed ◽  
Avena Fatua ◽  
Wild Oat ◽  
Soybean Yield

The effects of various densities and durations of wild oat (Avena fatuaL.) competition in soybean [Glycine max(L.) Merr. ‘Evans’] were determined in the field during a 2-yr period. Season-long competition by densities of 1, 3,9, and 30 wild oat plants/m of row reduced soybean seed yield an average of 6, 17, 32, and 51%, respectively. An infestation of 30 wild oat plants/m of row did not reduce soybean yield if the period of competition was limited to 4 weeks after crop emergence; however, yields were reduced 29, 50, 63, 58, and 63% when wild oat competed for 5, 6, 7, and 8 weeks, or season long, respectively. Wild oat competition reduced soybean pods per plant and seeds per plant more than seeds per pod or seed weight.

Effects of moisture stress on the oil and protein components of soybean seeds

1988 ◽  
Vol 39 (2) ◽  
pp. 163 ◽  
Author(s):  
IA Rose
Keyword(s):  
Seed Weight ◽  
Field Experiments ◽  
Soybean Seed ◽  
Moisture Stress ◽  
Yield Response ◽  
Moisture Regime ◽  
Regression Equations ◽  
Protein Percentage ◽  
Early Maturing ◽  
Protein Components

Over a five year period, early-maturing indeterminate soybean lines were evaluated in parallel dryland and fully irrigated field experiments. Moisture stress effects on yield, seed weight, and oil and protein content of seeds were evaluated by comparing genotype x moisture regime means. Both the amount and distribution of rainfall varied among seasons, resulting in dryland yields from 6% to 84% of the fully irrigated experiments. Seed weight also responded to seasonal rainfall patterns with reductions owing to moisture stress contributing from 29% to 54% of the yield response. Between 57% and 68% of the seed weight loss was attributed to changes in weight per seed of oil and protein. An index relating response to stress to irrigated performance was calculated for each trait. Regression equations showed significant (P > 0.05) relationships between the effect of stress on seed weight and the resultant oil and protein responses to stress. When compared to the irrigated treatments, oil and protein percentages of dryland seed varied, depending on the balance between reduction in seed weight and response of these constituents to the pattern of stress. In one season when severe stress occurred very early in podfill, the result was reduced protein and increased oil percentages. In three other years the protein percentage of dryland seed increased, and was accompanied by a decrease in oil percentage. In a high rainfall season, non-significant (P > 0.05) increases in both oil and protein percentage were obtained. Sowing early-maturing genotypes into soils with more than 150 mm available soil moisture will usually avoid moisture stress until after podfill commences. Stress will usually increase during podfill, which will most often result in higher protein and lower oil content of dryland produced soybean seed.

Mapping QTL controlling soybean seed sucrose and oligosaccharides in a single family of soybean nested association mapping (SoyNAM) population

2020 ◽  
Author(s):  
Mohammad Wali Salari ◽  
Patrick Obia Ongom ◽  
Rima Thapa ◽  
Henry T. Nguyen ◽  
Tri D. Vuong ◽  
...  
Keyword(s):  
Association Mapping ◽  
Soybean Seed ◽  
Single Family ◽  
Nested Association Mapping ◽  
Mapping Qtl

Contribution of incident solar radiation on leaves and pods to soybean seed weight and composition

2016 ◽  
Vol 77 ◽  
pp. 1-9 ◽  
Author(s):  
Mariana L. Bianculli ◽  
Luis A.N. Aguirrezábal ◽  
Gustavo A. Pereyra Irujo ◽  
María M. Echarte
Keyword(s):  
Solar Radiation ◽  
Seed Weight ◽  
Soybean Seed ◽  
Incident Solar Radiation

scholarly journals Uncovering the Genetic Architecture of Seed Weight and Size in Intermediate Wheatgrass through Linkage and Association Mapping

2017 ◽  
Vol 10 (3) ◽  
Author(s):  
Xiaofei Zhang ◽  
Steven R. Larson ◽  
Liangliang Gao ◽  
Soon Li Teh ◽  
Lee R. DeHaan ◽  
...  
Keyword(s):  
Association Mapping ◽  
Seed Weight ◽  
Genetic Architecture ◽  
Intermediate Wheatgrass

Soybean (Glycine max)Growth as Affected by Weed Removal, Cultivar, and Row Spacing

Weed Science ◽  
1979 ◽  
Vol 27 (5) ◽  
pp. 562-565 ◽  
Author(s):  
O. C. Burnside
Keyword(s):  
Glycine Max ◽  
Weed Control ◽  
Great Plains ◽  
Seed Weight ◽  
Soybean Seed ◽  
Row Spacing ◽  
Soybean Variety ◽  
Weed Growth ◽  
Production Area ◽  
Weed Removal

The influence of weed removal, cultivar, and row spacing on soybean [Glycine max(L.) Merr.] yields was determined for 3 yr at the western edge of the soybean production area in the Great Plains in order to establish the critical weed-control periods. Early weed removal aided soybean stand establishment, and there was an inverse relationship between soybean stand and production of weed top-growth. Soybean seed weight and numbers per plant both increased as weed growth decreased. The soybean variety ‘Amsoy 71’ was more competitive than ‘Beeson’ to both early and late emerging weeds. Soybeans weeded at 2 through 4 weeks after planting did not show significantly reduced soybean yields from later emerging weeds. Thus, weed control the first month after planting is the most critical in obtaining high soybean yields.

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