Morphoagronomic genetic diversity in american wild rice species

Veasey, Elizabeth Ann; Silva, Edson Ferreira da; Schammass, Eliana Aparecida; Oliveira, Giancarlo Conde Xavier; Ando, Akihiko

doi:10.1590/s1516-89132008000100012

Cited by 24 publications

(25 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The non-significant traits were flag leaf width, culm diameter and the ratio culm/width of the grain. Veasey et al (2008) also found significant differences and high variability for 11 populations of O. glumaepatula, mainly for the characters number of tillers, plant height at flowering, leaf length and width, culm length, days to heading, panicle number, panicle height, flag leaf length, spikelet length and awn length.…”

Section: Resultsmentioning

confidence: 86%

“…White (65 %) and purple (35 %) genotypes were observed for SC, while presence (76 %) and absence (24 %) of the pubescence were found in GP. Veasey et al (2008) reported variation within and among populations of O. glumaepatula for stigma color, with three populations 100 % white, four populations 100 % purple, and the others with varying degrees for each color, while white was the only color found on the other South American wild rice species (O. latifolia, O. grandiglumis and O. alta).…”

Section: Resultsmentioning

confidence: 98%

“…Rosa et al (2006) characterized eight populations of O. glumaepatula Steud. collected in different hydrographic basins and Veasey et al (2008) analyzed the genetic variability among the four wild rice species occurring in South America, reporting agro-morphological variation for O. glumaepatula, followed by O. latifolia.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Agro-morphological characterization of upland rice accessions

Nascimento

Silva

Veasey

2011

Sci. agric. (Piracicaba, Braz.)

Self Cite

View full text Add to dashboard Cite

The agro-morphological characterization is fundamental in order to provide information for plant breeding programs. The aim of the present study was to characterize 146 accessions of upland rice (Oryza sativa L.), based on qualitative and quantitative agro-morphological descriptors. The experiment was conducted in Recife, state of Pernambuco, Brazil, using a randomized block design with three replicates. Polymorphism was observed among 12 of 14 qualitative characters evaluated, whereas significant differences (p < 0.05) were observed for 11 of the 14 analysed quantitative traits. Genetic variance was higher than environmental variance and the average inheritability coefficients were above 80 % for all characters, which ensures the predominance of the genetic components in the differences observed among accessions. On the cluster analysis for qualitative traits the accessions were classified in two groups with a total of 18 duplicates, whereas for the quantitative traits three groups were obtained with few subgroups. The principal component analysis for quantitative traits showed great dispersion of the accessions. The most divergent group of accessions included the genotypes Mitsukasane, Mie, Tomoe mochi, Ooba kirishima and Nourin mochi 6, which showed a higher number of spicklets per plant. There is high variability among the rice accessions from the germplasm collection studied, which presents great importance for breeding programs or for genetic studies on this species

show abstract

Section: Resultsmentioning

confidence: 86%

Section: Resultsmentioning

confidence: 98%

See 1 more Smart Citation

Agro-morphological characterization of upland rice accessions

Nascimento

Silva

Veasey

2011

Sci. agric. (Piracicaba, Braz.)

Self Cite

View full text Add to dashboard Cite

show abstract

“…As the study of genetic diversity of morphological traits can directly provide information on germplasm richness and provide important information for farmers or breeders especially when the resource population is large, using morphological traits to study genetic diversity is considered as a very simple and economical approach. Therefore, this classical method continues to be extensively employed in the evaluation of germplasm resources (Li et al 2001;Hien et al 2007;Veasey et al 2008). At present, in evaluating crop germplasm resources, qualitative traits such as morphological features could be readily distinguished and identified, and quantitative traits have large differences (Horejsi and Staub 1999).…”

Section: Introductionmentioning

confidence: 99%

Morphological diversity of panicle traits in Kam fragrant glutinous rice (Oryza sativa)

Lei

Zhou

Zhang

et al. 2017

Genet Resour Crop Evol

View full text Add to dashboard Cite

Panicle traits are the most intuitive and representative features of rice germplasm resources that have been utilized in the determination of its identity, genetic diversity, yield, and quality. Based on the approaches of ethnobotany, cultural anthropology and plant morphology, we analyzed the panicle traits of 95 traditional Kam fragrant glutinous rice landraces according to folk classification in Qiandongnan Prefecture of Guizhou Province in the past 10 years. A total of 95 Kam fragrant glutinous rice landraces were tested, of which 91% consisted of those with awns, and landraces with awn lengths of 2-6 cm comprised 62%. The coefficient of variation (CV) of awn color, husk color and Grain color was more than 50%, thereby indicating extensive morphological variations among the traditional Kam fragrant glutinous rice landraces. The average Shannon-Wiener value (diversity index, H 0 ) for panicle qualitative traits was 0.50, which was significantly higher than that of quantitative traits (0.22), thereby indicating a relatively higher degree of genetic diversity among qualitative traits. Cluster analysis of panicle morphological traits showed that 95 Kam fragrant glutinous rice landraces could be divided into five categories, using the Euclidean distance of 0.68 as threshold. Each cultivar manifested unique panicle traits. The present study on the morphological diversity of Kam fragrant glutinous rice landraces provided basic information that may be utilized for the conservation and sustainable use of Kam fragrant glutinous rice landraces.

show abstract

“…Veasey et al (2008) e Rosa et al (2006) afi rmam que trabalhos que visem a caracterização morfofenológica e agronômica das populações de espécies silvestres de arroz constituem uma lacuna a ser preenchida. Trabalhos com essa abordagem, além de caracterizar melhor essas espécies, são importantes em etapas iniciais de projetos de melhoramento, com o intuito de desenvolver populações com potencial agronômico em caracteres como produção, hábito de crescimento, altura da planta, resistência a pragas, entre outras.…”

Section: Introductionunclassified

Aspectos da biologia e fenologia de Oryza latifolia Desv. (Poaceae) no Pantanal sul-mato-grossense

Bertazzoni

Damasceno‐Junior

2011

Acta Bot. Bras.

View full text Add to dashboard Cite

Aspectos da biologia e fenologia de Oryza latifolia Desv.(Poaceae) no Pantanal sul-mato-grossense ABSTRACT(Aspects of the biology and phenology of Oryza latifolia Desv. (Poaceae) in the Pantanal wetland in Mato Grosso do Sul, Brazil). Oryza latifolia, a wild species of rice, aquatic emergent, tolerant of fl ooding, occurs on fl oodplains of the Pantanal wetland, mainly in the Paraguay River sub-region. Th e aim of this study was to describe aspects of the biology and phenology of O. latifolia in two areas (Serra do Amolar and Bracinho) along the Paraguay River, in the township of Corumbá (state of Mato Grosso do Sul). Five patches of wild rice were observed in each area. Twenty replicates of quadrats (1m x 1m) were randomly established monthly in each patch, and percent cover was estimated; fl owering, fruiting, production of dry infl orescence and water depth were monitored from December 2006 to November 2007. Percent cover is correlated with water level and day length in the plots, reaching up to 80% at fl ood time in both areas. Recruitment of seedlings occurs during the dry season only on the plot edges. Th e reproductive phase of the species is short and starts aft er the fl ood peak. Th is period is correlated with a set of environmental variables such as day length and water level. Dispersal occurs by barochory, hydrochory and ictiochory, at the onset of receding water, and seeds stay viable for fi ve months up to the dry period.

show abstract

Morphoagronomic genetic diversity in american wild rice species

Abstract: ABSTRACT

Cited by 24 publications

References 9 publications

Agro-morphological characterization of upland rice accessions

Agro-morphological characterization of upland rice accessions

Morphological diversity of panicle traits in Kam fragrant glutinous rice (Oryza sativa)

Aspectos da biologia e fenologia de Oryza latifolia Desv. (Poaceae) no Pantanal sul-mato-grossense

Contact Info

Product

Resources

About