Common Sunflower (<i>Helianthus annuus</i>) Interference in Soybean (<i>Glycine max</i>)

Geier, Patrick W.; Maddux, L. D.; Moshier, L. J.; Stahlman, Phillip W.

doi:10.1017/s0890037x00040021

Cited by 33 publications

(39 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been found to decrease yields of corn by up to 64% (Deines et al . 2004) and yields of soybean by as much as 97% (Geier et al . 1996).…”

Section: Introductionmentioning

confidence: 99%

“…The weed form is listed as a noxious weed in the states of Iowa, Minnesota and Alaska, and is known to be a problematic weed in corn, soybeans, and other species (Irons & Burnside 1982;Mesbah et al 2004). It has been found to decrease yields of corn by up to 64% (Deines et al 2004) and yields of soybean by as much as 97% (Geier et al 1996). Weed management techniques have been suggested as necessary to manage herbicide-tolerant populations of H. annuus (Burton et al 2004), which have evolved in numerous distinct locales, including regions of Kansas, Missouri, South Dakota, and Iowa.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Genetics and evolution of weedy Helianthus annuus populations: adaptation of an agricultural weed

Kane

Rieseberg

2007

Molecular Ecology

View full text Add to dashboard Cite

Agricultural weeds are a major cost to economies throughout the world, and have evolved from numerous plant species in many different plant families. Despite their ubiquity, we do not yet know how easily or often weeds evolve from their wild ancestors or the kinds of genes underlying their evolution. Here we report on the evolution of weedy populations of the common sunflower Helianthus annuus. We analysed 106 microsatellites in 48 individuals from each of six wild and four weed populations of the species. The statistical tests lnRV and lnRH were used to test for significant reductions in genetic variability at each locus in weedy populations compared to nearby wild populations. Between 1% and 6% of genes were significant outliers with reduced variation in weedy populations, implying that a small but not insignificant fraction of the genome may be under selection and involved in adaptation of weedy sunflowers. However, there did not appear to be a substantial reduction in variation across the genome, suggesting that effective population sizes have remained very large during the recent evolution of these weedy populations. Additional analyses showed that weedy populations are more closely related to nearby wild populations than to each other, implying that weediness likely evolved multiple times within the species, although a single origin followed by gene flow with local populations cannot be ruled out. Together, our results point to the relative ease with which weedy forms of this species can evolve and persist despite the potentially high levels of geneflow with nearby wild populations.

show abstract

“…It has been found to decrease yields of corn by up to 64% (Deines et al . 2004) and yields of soybean by as much as 97% (Geier et al . 1996).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genetics and evolution of weedy Helianthus annuus populations: adaptation of an agricultural weed

Kane

Rieseberg

2007

Molecular Ecology

View full text Add to dashboard Cite

show abstract

“…Wild biotypes of cultivated sunflower (Helianthus annuus L.), a species native to North America (Rogers et al 1982), are weeds in corn (Zea mays L.), soybean (Glycine max L.), and other crops (Schweizer and Bridge 1982;Geier et al 1996). Controlling sunflowers in corn and soybean was difficult before sulfonylurea (SU) and imidazolinone (IMI) herbicides were introduced (Al- Khatib et al 1998).…”

Section: Introductionmentioning

confidence: 99%

Acetohydroxyacid synthase mutations conferring resistance to imidazolinone or sulfonylurea herbicides in sunflower

Kolkman

Slabaugh

Bruniard³

et al. 2004

Theor Appl Genet

126

105

View full text Add to dashboard Cite

Wild biotypes of cultivated sunflower ( Helianthus annuus L.) are weeds in corn ( Zea mays L.), soybean ( Glycine max L.), and other crops in North America, and are commonly controlled by applying acetohydroxyacid synthase (AHAS)-inhibiting herbicides. Biotypes resistant to two classes of AHAS-inhibiting herbicides-imidazolinones (IMIs) or sulfonylureas (SUs)-have been discovered in wild sunflower populations (ANN-PUR and ANN-KAN) treated with imazethapyr or chlorsulfuron, respectively. The goals of the present study were to isolate AHAS genes from sunflower, identify mutations in AHAS genes conferring herbicide resistance in ANN-PUR and ANN-KAN, and develop tools for marker-assisted selection (MAS) of herbicide resistance genes in sunflower. Three AHAS genes ( AHAS1, AHAS2, and AHAS3) were identified, cloned, and sequenced from herbicide-resistant (mutant) and -susceptible (wild type) genotypes. We identified 48 single-nucleotide polymorphisms (SNPs) in AHAS1, a single six-base pair insertion-deletion in AHAS2, and a single SNP in AHAS3. No DNA polymorphisms were found in AHAS2 among elite inbred lines. AHAS1 from imazethapyr-resistant inbreds harbored a C-to-T mutation in codon 205 ( Arabidopsis thaliana codon nomenclature), conferring resistance to IMI herbicides, whereas AHAS1 from chlorsulfuron-resistant inbreds harbored a C-to-T mutation in codon 197, conferring resistance to SU herbicides. SNP and single-strand conformational polymorphism markers for AHAS1, AHAS2, and AHAS3 were developed and genetically mapped. AHAS1, AHAS2, and AHAS3 mapped to linkage groups 2 ( AHAS3), 6 ( AHAS2), and 9 ( AHAS1). The C/T SNP in codon 205 of AHAS1 cosegregated with a partially dominant gene for resistance to IMI herbicides in two mutant x wild-type populations. The molecular breeding tools described herein create the basis for rapidly identifying new mutations in AHAS and performing MAS for herbicide resistance genes in sunflower.

show abstract

“…Kansas is widely infested with common sunflower and shattercane, both weeds being found in row crop fields such as corn and soybean (Allen et al 2000;Geier et al 1996;Irons and Burnside 1982;Roeth et al 1996). Shattercane and common sunflower are competitive weed species; yet little published research exists on their interference and competitive ability in corn or soybean.…”

mentioning

confidence: 99%

Common sunflower (Helianthus annuus) and shattercane (Sorghum bicolor) interference in corn

Deines

Dille²,

Blinka

et al. 2004

Weed sci.

View full text Add to dashboard Cite

Multiple weed species in the field combine to cause yield losses and can be described using one of several empirical models. Field studies were conducted to compare observed corn yield loss caused by common sunflower and shattercane populations with predicted yield losses modeled using a multiple species rectangular hyperbola model, an additive model, or the yield loss model in the decision support system, WeedSOFT, and to derive competitive indices for common sunflower and shattercane. Common sunflower and shattercane emerged with corn and selected densities established in field experiments at Scandia and Rossville, KS, between 2000 and 2002. The multiple species rectangular hyperbola model fit pooled data from three of five location–years with a predicted maximum corn yield loss of 60%. Initial slope parameter estimate for common sunflower was 49.2 and 4.2% for shattercane. A ratio of these estimates indicated that common sunflower was 11 times more competitive than shattercane. When common sunflower was assigned a competitive index (CI) value of 10, shattercane CI was 0.9. Predicted yield losses modeled for separate common sunflower or shattercane populations were additive when compared with observed yield losses caused by low-density mixed populations of common sunflower (0 to 0.5 plants m−2) and shattercane (0 to 4 plants m−2). However, a ratio of estimates of these models indicated that common sunflower was only four times as competitive as shattercane, with a CI of 2.5 for shattercane. The yield loss model in WeedSOFT underpredicted the same corn losses by 7.5%. Clearly, both the CI for shattercane and the yield loss model in WeedSOFT need to be reevaluated, and the multiple species rectangular hyperbola model is proposed.

show abstract

Common Sunflower (Helianthus annuus) Interference in Soybean (Glycine max)

Cited by 33 publications

References 13 publications

Genetics and evolution of weedy Helianthus annuus populations: adaptation of an agricultural weed

Genetics and evolution of weedy Helianthus annuus populations: adaptation of an agricultural weed

Acetohydroxyacid synthase mutations conferring resistance to imidazolinone or sulfonylurea herbicides in sunflower

Common sunflower (Helianthus annuus) and shattercane (Sorghum bicolor) interference in corn

Contact Info

Product

Resources

About