Compensatory Mechanisms Associated with the Effect of Spring Wheat Seed Size on Wild Oat Competition

Guillen-Portal, F. R.; Stougaard, Robert N.; Xue, Qingwu; Eskridge, Kent M.

doi:10.2135/cropsci2005.08-0270

Cited by 18 publications

(13 citation statements)

References 39 publications

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“…Ali Abadi et al (2011) reported that germination, seedling dry weight, seedling vigor and seedling length increased by increasing in seed size. Larger seeds develop better root system of seedling and advantage of deep root is to get soil moisture efficiency from deeper layers of soil (Guillen-Portal et al, 2006). Moreover, osmopriming with CaCl2 significantly improved the grain yield of wheat under conventional and zero tillage while improved the straw and grain yield only under conventional tillage system.…”

Section: Discussionmentioning

confidence: 99%

Influence of Seed Priming and Seed Size on Wheat Performance under Different Tillage Systems

Haider¹,

Hussain²,

Khan³

et al. 2016

IJAB

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To cite this paper: Haider, M.U., M. AbstractThis field study was conducted to assess the effect of seed priming and seed size on emergence, growth and productivity of wheat under conventional and conservation tillage during winter season 2012-2013. Seeds of wheat cultivar Punjab-2011 were separated into small sized (1000 grain weight = 22.5 g) and bold sized (1000 grain weight = 44.4 g) seeds by winnowing. Both bold and small sized seeds were soaked in aerated solution of CaCl2 (ψs -1.25 MPa; osmopriming) for 24 h while untreated (dry) seeds were taken as control. Osmoprimed and dry seeds of both sizes were sown under conventional and conservation (zero tillage) tillage practices. Results indicated that wheat sown under conventional tillage observed quick, uniform and better early stand establishment compared with zero tilled wheat. However, seed primed with CaCl2 significantly lowered the days to start emergence, mean emergence time and improved final emergence count compared with dry seeds sown, particularly of zero tilled wheat. Zero tilled crop observed a significant cut in leaf area index (LAI), crop growth rate (CGR) and net assimilation (NAR), while bold seed size and osmopriming improved the LAI, CGR and NAR under both tillage practices, zero tilled wheat in particular. Moreover, zero tilled wheat observed a significant yield penalty due to significant increase in yield related traits; however, osmopriming and bold seed size improved wheat productivity due to substantial expansion in yield related traits under conventional and zero tillage, zero tillage in particular, practices. In conclusion, bold sized seed osmoprimed with CaCl2 was better able to produce higher yield of conventionally tilled and zero tilled wheat.

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Section: Discussionmentioning

confidence: 99%

Influence of Seed Priming and Seed Size on Wheat Performance under Different Tillage Systems

Haider¹,

Hussain²,

Khan³

et al. 2016

IJAB

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“…Similarly, large vs. small seed size reduced panicle density by 15%, and biomass and seed production by 25% (Xue and Stougaard 2002). Guillen-Portal et al (2006) also determined that competitive ability of spring wheat against A. fatua was enhanced by planting large vs. small seeds.…”

Section: Response To Other Human Manipulationsmentioning

confidence: 89%

The Biology of Canadian Weeds. 27.Avena fatuaL. (updated)

Beckie

FrancisArdath²,

HallLinda

2012

Can. J. Plant Sci.

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L. M. 2012. The Biology of Canadian Weeds. 27. Avena fatua L. (Updated). Can. J. Plant Sci. 92:1329Á1357. An updated review of biological information is provided for Avena fatua. A widespread species originating in Eurasia, A. fatua is one of the 10 worst annual weeds of temperate agricultural regions of the world. Key weediness traits of this highly selfing species include fecundity, seed shatter, and a large and persistent seed bank with variable degrees of primary seed dormancy. The species occurs in all Canadian provinces and most states in the USA. In Canada, it is most troublesome as a weed in the prairies, where it has spread throughout crop areas in all climatic zones. Depending upon plant density and relative time of emergence, A. fatua competition may reduce annual crop yields by as much as 70%. First cohort emergence of A. fatua coincides with planting and emergence of spring-seeded crops, although additional cohorts can emerge throughout the growing season. Avena fatua is more abundant in zerothan intensive-tillage systems; the former regime promotes earlier and greater emergence because of a shallower and less persistent seed bank. Despite the introduction of highly efficacious herbicides in the 1970s and 1980s, abundance of the species has not declined across the Canadian prairies or elsewhere. The continual evolution of herbicide-resistant A. fatua populations, seed spread via farm machinery, and limited herbicide modes of action for its control threaten sustained annual field crop production in many temperate agricultural areas. Further adoption and integration of multiple non-herbicidal weed management practices, such as enhanced crop seeding rate, competitive crops and cultivars, and precision fertilizer placement, should help mitigate A. fatua interference. The species has some beneficial uses as an alternative feed and food constituent or industrial feedstock, as well as potential in cultivated oat (Avena sativa L.) improvement. Key words: Avena fatua, wild oat, folle avoine, weed biology Beckie, H. J., Francis, A. et Hall, L. M. 2012. La biologie des mauvaises herbes au Canada. 27. Avena fatua L. (mise aj our). Can. J. Plant Sci. 92: 1329Á1357. L'article propose une mise au point sur la biologie d'Avena fatua. Espe`ce d'Eurasie largement re´pandue, la folle avoine figure parmi les dix pires adventices annuelles dans les re´gions agricoles ac limat tempe´re´du monde.Les principaux caracte`res qui font de cette espe`ce autofe´conde´e une mauvaise herbe sont la fe´condite´, l'e´gre`nement et un important re´servoir de graines persistantes a`dormance primaire de degre´variable. La folle avoine existe dans toutes les provinces du Canada et dans la majorite´des É tats ame´ricains. Au Canada, elle s'ave`re particulie`rement proble´matique dans les Prairies, ou`elle a gagne´les re´gions cultive´es de toutes les zones climatiques. Selon la densite´du peuplement et le moment relatif ou`a lieu la leve´e, A. fatua peut re´duire le rendement des cultures annuelles de jusqu'a`70 %. La germination de la pre...

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“…Blackshaw et al (1981) reported that increasing Setaria veridis density decreased the spikelet number of wheat, floret fertility and grain number per spike through shading effect of weed. Also, Guillen-Portal et al (2006) revealed that the grain number per wheat spike significantly decreased in the presence of wild oat (Avena fatua L.).…”

Section: Number Of Grains Per Spike and 1000 Grain Weightmentioning

confidence: 99%

Influences of Different Nitrogen Levels on Competition between Spring Wheat (Triticum aestivum L.) and Wild Mustard (Sinapis arvensis L.)

Behdarvand¹,

Chinchanikar²,

Dhumal³

2012

JAS

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A field experiment was carried out to investigate the effects of different nitrogen levels on interspecific competition between wild mustard and spring wheat. The experiment was laid out in randomized complete block design under a split plot arrangement, with three replications. The experiment comprised of three nitrogen levels (90, 150 and 210 kg ha -1 ) assigned to main plots and four wild mustard densities such as 0, 5, 10 and 15 plants m

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Compensatory Mechanisms Associated with the Effect of Spring Wheat Seed Size on Wild Oat Competition

Cited by 18 publications

References 39 publications

Influence of Seed Priming and Seed Size on Wheat Performance under Different Tillage Systems

Influence of Seed Priming and Seed Size on Wheat Performance under Different Tillage Systems

The Biology of Canadian Weeds. 27.Avena fatuaL. (updated)

Influences of Different Nitrogen Levels on Competition between Spring Wheat (Triticum aestivum L.) and Wild Mustard (Sinapis arvensis L.)

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