Agronomic evaluation of Paspalum notatum Flügge under the influence of photoperiod

Machado, Juliana Medianeira; Dall'Agnol, Miguel; Motta, Eder Alexandre Minski da; Pereira, Érico Felden; Simioni, Carine; Weiler, Roberto Luis; Zuñeda, Marcos Perera; Ferreira, Priscila Becker

doi:10.1590/s1806-92902017000100002

Cited by 6 publications

(6 citation statements)

References 13 publications

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“…In addition, these materials have been characterized in relation to their genetics and morphology (Dahmer et al, 2008;Fachinetto et al, 2012;Pereira et al, 2012;Pereira et al 2015). Subsequently, these materials are subjected to intra or interspecific crosses, using duplicate diploid sex plants as the female parent (Huber et al, 2016;Machado et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity of a Paspalum notatum Flügge germplasm collection

et al. 2017

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The objective of this study was to assess the genetic diversity among accessions of Paspalum notatum based on morphological marker traits and identify those morphological traits that contribute most to the variability among accessions. Fifty-three accessions were evaluated for the following traits: length, width, color, and pubescence of sheath; length, width, insertion angle, color of midrib, and pubescence of leaves; number, length, and angle of racemes; length of flowering stems; and plant growth habit (erect or prostrate). Multivariate analysis of the quantitative morphological data based on the Mahalanobis distance and UPGMA method grouped the accessions into 19 heterogeneous clusters. The relative contribution of each trait to cluster formation was obtained using the Singh method. Qualitative morphological traits were used to construct a dendrogram based on Jaccard's similarity, generating 13 clusters. Based on the morphological traits investigated, there is high genetic variation among accessions of P. notatum, demonstrating that these accessions have a good potential for a breeding program. Length of racemes, width of sheath, length of flowering stems, and length of leaves were found to contribute most to the variability among accessions. A number of traits contributed to a lesser degree. The set of characters used are representative of the vast phenotypic plasticity observed in P. notatum, a diversity which is likely to be related to the species apomictic form of reproduction and the origin of the accessions.

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Section: Introductionmentioning

confidence: 99%

Genetic diversity of a Paspalum notatum Flügge germplasm collection

et al. 2017

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“…notatum, plantas tetraploides sexuais são obtidas pela duplicação cromossômica da cultivar Pensacola, que é diploide e sexual (QUARIN et al, 2001;WEILER et al, 2015;MACHADO et al, 2017). No entanto, como a apomixia é ligada à poliploidia, muitas plantas tetraploidizadas tornam-se apomíticas, impedindo os cruzamentos (QUARIN et al, 2001).…”

Section: Resultados E Discussõesunclassified

Contribuição Social E Acadêmica Da Liga De Parasitologia Da Universidade Do Estado Do Rio De Janeiro

Neves¹,

Filomeno²,

Brito³

et al. 2019

As Ciências Biológicas E Da Saúde Na Contemporaneidade 4

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“…To date, intraspecific breeding efforts to improve forage traits have resulted in the selection of improved hybrids (Barbosa et al, 2019;Graminho et al, 2019) and the release of the cultivar Boyero (Urbani et al, 2017). The bahiagrass breeding program of the Federal University of Rio Grande do Sul (UFRGS) has explored tetraploid bahiagrass germplasm and reported improvements in forage production and nutritive value in native ecotypes and intraspecific hybrids (Fachinetto, Schneider, Hubber, & Dall'Agnol, 2012;Steiner et al, 2017;Machado et al, 2017;Machado, Krycki, Weiler, Simioni, & Dall'Agnol, 2021;Weiler et al, 2018;Barbosa et al, 2019;Graminho et al, 2019). Introduced species such as Urochloa spp.…”

Section: Introductionmentioning

confidence: 99%

Seed yield and quality of Paspalum notatum Flügge intraspecific hybrids

Souza,

Motta,

Brunes

et al. 2023

Acta Sci. Agron.

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Bahiagrass (Paspalum notatum Flügge) is an important forage in South America and the United States because of its high palatability, resistance to trampling and grazing, and tolerance to cold, but it exhibits low seed yield and poor seed quality. Previous studies reported improvements in forage production and nutritive value in hybrids and ecotypes; however, information about seed yield and quality in forage bahiagrass is limited. This study aimed to characterize the seed yield and quality of nine P. notatum intraspecific hybrids and three controls: P. notatum ecotypes V4 and Bagual and cultivar Pensacola. Inflorescence density, 1,000-seed weight, seed yield and germination rate decreased in year 2 influenced by weather conditions and ergot. Seed yield ranged from 139 (Pensacola) to 1,158 (Bagual) kg ha-1 among all entries, where Bagual, C18, and V4 produced more than 974 kg ha-1, which was approximately seven times more than Pensacola. Bagual, C18, V4, 336, C15, 225, and D3 showed germination rates greater than 83%. In conclusion, Bagual had the highest seed yield and germination rate, whereas hybrids C18 and 336 showed high seed yield, 1,000-seed weight, and germination rate in both years. Bagual, C18, and 336 should be used in future breeding programs to improve seed production traits. Our study revealed that selection for seed production traits can result in improvements in seed yield and quality in bahiagrass.

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Agronomic evaluation of Paspalum notatum Flügge under the influence of photoperiod

Cited by 6 publications

References 13 publications

Genetic diversity of a Paspalum notatum Flügge germplasm collection

Genetic diversity of a Paspalum notatum Flügge germplasm collection

Contribuição Social E Acadêmica Da Liga De Parasitologia Da Universidade Do Estado Do Rio De Janeiro

Seed yield and quality of Paspalum notatum Flügge intraspecific hybrids

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