Cowpea (<i>Vigna unguiculata</i>) Seed Protein Response to Glyphosate

Cerdeira, A. L.; Cole, A. W.; Luthe, Dawn S.

doi:10.1017/s0043174500083843

Cited by 14 publications

(16 citation statements)

References 9 publications

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“…This pat-tern of decreased seed germination was observed when herbicides were applied late season but before seed physiological maturity (Azlin and McWhorter 1981;Whigham and Stoller 1979). Previous studies have shown that glyphosate, when applied to plants during seed fill, inhibits seed development by reducing the supply of aromatic amino acids (Cerdeira et al 1985). Similar studies, to our knowledge, have not been conducted for cyclohexanedione herbicides.…”

Section: Seed Yieldsupporting

confidence: 61%

Effects of Postemergence Herbicides on Centipedegrass Seed Production¹

Ferrell¹,

Murphy²,

Vencill³

et al. 2003

Weed Technology

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Field studies were conducted in 2001 and 2002 to determine the effect of clethodim, sethoxydim, and halosulfuron on centipedegrass seedhead suppression, seed yield, and seed germination. Clethodim (0.28 kg/ha), sethoxydim (0.31 kg/ha), and halosulfuron (0.06 kg/ha) applications were made at −2, 0, 2, 4, and 6 wk after mowing stopped (WAMS) in each year. Seedhead suppression varied in severity between 2001 and 2002, with increased suppression in 2001. Clethodim reduced seedhead emergence 50 and 33% when applied at 2 and 4 WAMS, respectively, in 2001. Sethoxydim reduced seedhead emergence by 21 and 18% when applied at 2 and 4 WAMS, respectively, in 2001. Halosulfuron had no effect on seedhead emergence in either year and did not reduce seed yield at any application timing. Clethodim reduced seed yield between 22 and 44% at all application timings. The pattern of yield reduction from sethoxydim was similar to that caused by clethodim; however, yield reduction with sethoxydim ranged between 7 and 48% for all application timings. The greatest reduction in seed yield occurred when clethodim and sethoxydim were applied 4 WAMS. Seed germination was not affected by halosulfuron or sethoxydim at any application timing. Clethodim, when applied at 4 and 6 WAMS, decreased seed germination by 17 and 20%, respectively.

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Section: Seed Yieldsupporting

confidence: 61%

Effects of Postemergence Herbicides on Centipedegrass Seed Production¹

Ferrell¹,

Murphy²,

Vencill³

et al. 2003

Weed Technology

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“…Furthermore, the histological abnormalities seen in the embryo and endosperm indicated the inability of their cells to divide. Such effects on cell division and cell elongation were similar to those of other herbicides (Cerdeira et al, 1985;Maun & Cavers, 1969;Isaacs et al, 1989). In addition, the glyphosate might also bring about a more inclusive effect of desiccation which would prevent the functioning of all metabolic activity, including cell division and cell elongation (Cole, 1985;Cole et al, 1983;Cerdeira et al, 1985).…”

Section: Discussionmentioning

confidence: 76%

A histological study of the effect of glyphosate on seed development in the wild oat (Avena fatua L.)

Shuma

Raju

1993

Weed Research

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Summary: Résumé: Zusammenfassung Glyphosate was applied to panicles of wild oats (Avena fatua L.) before, at and after anthesis. The florets in spikelets exposed to the herbicide before, at and immediately after anthesis produced seeds with abnormal embryos and endosperm. Histological and embryological studies showed that in all cases the chemical did not stop the normal process of double fertilization in the florets. The zygote divided, but did not proceed beyond the proembryo stage. The development of both the proembryo and the endosperm was abnormal. The proembryos and the early stages of embryos showed no normal provascular or vascular tissue differentiation. Externally also there was no proper development of embryo parts, such as the scutellum, epiblast, shoot and root apices. The embryonic tissues showed considerable obliteration and shrinkage and the nuclei in cells appeared small and shrunken. The cells, especially in the meristem regions, appeared lacunose. The embryo and the endosperm in the caryopses treated with glyphosate 9 days after anthesis or later, were morphologically and structurally very similar to those of the controls of comparable age. It was concluded that the greater the delay of glyphosate application after anthesis, the less was the effect on seed development. Une étude histologique de l'effet du glyphosate sur le developpement des graines de folle avoine (Avena fatua L.) Du glyphosate a été appliquéà des panicules de folle avoine (Avena fatua L.), avant, pendant et après l'anthèse. Les fleurs dans les epillets exposés à l'herbicide avant, et pendant immédiatement après l'anthese ont donné des graines avec des embryons et des endospermes anormaux, Des études histologiques et embryologiques ont montré que dans tous les cas le produit n'a pas arrêté le processus normal de double fertilisation au niveau des florets. Le zygote s'est divisé mais n'a pas été au‐delà du stade proembryon, Les développements du proembryon et de l'endosperme ont été anormaux. Les proembryons et les stades précoces des embryons n'ont pas montré de différenciations normales des tissus provasculaires ou vasculaires, Extérieurement également, il n'y a pas eu un développement plus correct des parties embryonnaires comme le scutellum, epiblast les ébauches racinaires et tigellaires. Leurs tissus embryonnaires ont montré des manques considérables et des rétrécissements et les noyaux dans les cellules sont apparus petits et rétrécis. Les cellules, particulièerement dans les régions méristématiques semblaient pleines de lacune. L'embryon et l'endosperme chez les caryopses traités au glyphosate 9 jours après l'anthèse ou plus tard, étaient structurellement et morphologiquement très voisins de ceux des témoins à un âge comparable. II en est conclu que plus le délai après l'anthèse de l'application du glyphosate était élevé, moins l'effet était fort sur le développement de la graine. Eine histologische Untersuchung der Wirkung von Glyphosat auf die Samenbildung des Flug‐Hafers (Avena fatua L.) Glyphosat wurde auf die Risp...

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“…Wilson and Smith ( 2002 ) report that glufosinate, paraquat, and diquat applied as desiccants to common bean accelerated seed maturity and desiccation. Glyphosate applied as a desiccant reduced pod length and seed weight when used as a harvest aid in cowpea ( Vigna unguiculata L.) (Cedeira et al, 1985 ). Many studies report reduced soybean yield and seed quality as a result of the application of desiccant prior to crop maturity (Azlin and Mcwhorter, 1981 ; Cerkauskas et al, 1982 ; Boudreaux and Griffin, 2011 ).…”

Section: Discussionmentioning

confidence: 99%

Influence of Harvest Aid Herbicides on Seed Germination, Seedling Vigor and Milling Quality Traits of Red Lentil (Lens culinaris L.)

2017

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Most red lentil produced worldwide is consumed in dehulled form, and post-harvest milling and splitting qualities are major concerns in the secondary processing industry. Lentil producers in northern temperate regions usually apply pre-harvest desiccants as harvest aids to accelerate the lentil crop drying process and facilitate harvesting operations. This paper reports on field studies conducted at Scott and Saskatoon, Saskatchewan, Canada in the 2012 and 2013 cropping seasons to evaluate whether herbicides applied as harvest aids alone or tank mixed with glyphosate affect seed germination, seedling vigor, milling, and splitting qualities. The site-year by desiccant treatment interaction for seed germination, vigor, and milling recovery yields was significant. Glyphosate applied alone or as tank mix with other herbicides (except diquat) reduced seed germination and seedling vigor at Saskatoon and Scott in 2012 only. Pyraflufen-ethyl (20 g ai ha−1) applied with glyphosate as well as saflufenacil (36 g ai ha−1) decreased dehulling efficiency, while saflufenacil and/or glufosinate with glyphosate reduced milling recovery and football recovery, although these effects were inconsistent. Application of diquat alone or in combination with glyphosate exhibited more consistent dehulling efficiency gains and increases in milling recovery yield. Significant but negative associations were observed between glyphosate residue in seeds and seed germination (r = −0.84, p < 0.001), seed vigor (r = −0.62, p < 0.001), dehulling efficiency (r = −0.55, p < 0.001), and milling recovery (r = −0.62, p < 0.001). These results indicate application of diquat alone or in combination with glyphosate may be a preferred option for lentil growers to improve milling recovery yield.

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Cowpea (Vigna unguiculata) Seed Protein Response to Glyphosate

Cited by 14 publications

References 9 publications

Effects of Postemergence Herbicides on Centipedegrass Seed Production¹

Effects of Postemergence Herbicides on Centipedegrass Seed Production¹

A histological study of the effect of glyphosate on seed development in the wild oat (Avena fatua L.)

Influence of Harvest Aid Herbicides on Seed Germination, Seedling Vigor and Milling Quality Traits of Red Lentil (Lens culinaris L.)

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Cowpea (Vigna unguiculata) Seed Protein Response to Glyphosate

Cited by 14 publications

References 9 publications

Effects of Postemergence Herbicides on Centipedegrass Seed Production1

Effects of Postemergence Herbicides on Centipedegrass Seed Production1

A histological study of the effect of glyphosate on seed development in the wild oat (Avena fatua L.)

Influence of Harvest Aid Herbicides on Seed Germination, Seedling Vigor and Milling Quality Traits of Red Lentil (Lens culinaris L.)

Contact Info

Product

Resources

About

Effects of Postemergence Herbicides on Centipedegrass Seed Production¹

Effects of Postemergence Herbicides on Centipedegrass Seed Production¹