Germinative potential of encrusted seed of tropical forage species

Souza, J. R. de; Lacerda, Janderson de Jesus; Morais, Otoniel Magalhães; Silva, Johon Porto

doi:10.1590/0103-8478cr20151089

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…B. humidicola) (Paula et al 2016, Figueiredo et al 2019, Rocha et al 2019. Due to the widespread use of cultivars of these species in the tropics, coupled to with Panicum maximum, Brazil has become the world´s largest producer and exporter of tropical forage seeds (Souza et al 2017), supplying most of the Latin American markets.…”

Section: Introductionmentioning

confidence: 99%

Microsporogenesis associated with seed yield in Urochloa sexual polyploid hybrids

Ragalzi

Mendes

Simeão

et al. 2021

Crop Breed. Appl. Biotechnol.

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High seed yield is a fundamental characteristic of apomictic and sexual hybrids of the genus Urochloa P. Beauv. (syn. Brachiaria (Trin.) Griseb.). It has been suggested that there is an association between polyploidy, the presence of meiotic irregularities, and low seed formation in this genus. The present study aimed to correlate these characteristics in Urochloa polyploid sexual interspecific hybrids in relation to the production of pure seeds. Segregational and non-segregational abnormalities were shown to led to cause the formation of tetrads with micronuclei, microcytes, polyads, and anomalous end products. The correlation between the percentage of meiotic abnormalities and the total production of pure seeds was negative and significant. To our knowledge, this is the first research with sexual polyploid hybrids from Urochloa and is relevant to identify hybrids with less frequent meiotic abnormalities and higher seed yield, with promising female parents for the breeding program.

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Section: Introductionmentioning

confidence: 99%

Microsporogenesis associated with seed yield in Urochloa sexual polyploid hybrids

Ragalzi

Mendes

Simeão

et al. 2021

Crop Breed. Appl. Biotechnol.

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“…Brazil has the potential to be a major producer of fodder plants for animal feed, as it is a country of excellent standing on the world stage, and has shown significant development in recent years (Souza et al, 2017). Grasses have always been regarded as low demand crops needing constant replanting, and these factors have resulted in low productivity rates and consequent economic failure.…”

Section: Introductionmentioning

confidence: 99%

Degradation Process, Phytosociology and Restoration of Grasses Used for Grazing Ruminants in Brazil

2020

THE JAPS

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The aim of this study is to present the main pasture grasses used in Brazil, the process of pasture degradation, pasture phytosociology, some undesirable pasture plants, and pasture restoration techniques. A wide plant availability and the high forage yield of its pastures make Brazil an important producer of plants for animal feed. The great majority of pastures in Brazil contain grasses of the genus Brachiaria, known for its strength and high forage potential. However, the pastures are undergoing constant degradation caused by improper handling, which leads to unsustainability. This is possibly due to extensive and extractive exploitation using a low level of technology and unsuitable management practices. Based on the principle that pastures can be restored, alternative techniques are required to promote improvements in forage quality. For this, it is important to recognize the undesirable pasture plants, which directly interfere with livestock production by competing with forage species for water, nutrients, space and light, as well as producing phytotoxins that prevent or suppress the growth of forage species. In the process of pasture restoration, the main objective is to maintain the vital functions of the ecosystem and to mitigate damage from undesirable plants through the immediate coverage of the soil.

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Germinative potential of encrusted seed of tropical forage species

Abstract: Brazil is the largest producer, consumer and exporter of seeds of forage species, thus the adoption of new technologies for expansion and maintenance of this market is of great

Cited by 2 publications

References 11 publications

Microsporogenesis associated with seed yield in Urochloa sexual polyploid hybrids

Microsporogenesis associated with seed yield in Urochloa sexual polyploid hybrids

Degradation Process, Phytosociology and Restoration of Grasses Used for Grazing Ruminants in Brazil

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