Quebra de dormência de sementes da videira cv. niágara rosada sem estratificação

Val, Aurinete Daienn Borges do; Motoike, Sérgio Yoshimitsu; Alvarenga, Eveline Mantovani; Cecon, Paulo Roberto

doi:10.1590/s0034-737x2010000200015

Cited by 5 publications

(16 citation statements)

References 6 publications

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“…Germination was a characteristic affected by cutting the seed (Figure 2), regardless of MS medium concentration. Partially cutting the seed or completely removing its tegument has been used for in vitro cultivation of other species, with advantages; however, this practice is commonly related to the difficulty of some seeds to germinate when maintained intact (LAMEIRA et al, 2000;VAL et al, 2010). Since baruzeiro has no germination restriction with intact seeds, with germination of 88.27%, such sectioning of seeds could be harmful, since it causes injuries to the seed, compromising its development, besides the loss of part of nutrient reserves of the seed, which are important in early in vitro germination stages of this fruit species.…”

Section: Resultsmentioning

confidence: 99%

Concentration of ms medium and cutting of seeds on in vitro establishment of baruzeiro (Dipteryx alata Vog.)

Pinhal¹,

Araruna²,

Carneiro³

et al. 2017

Biosci. J.

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Savannah is the second biome in biodiversity in Brazil, presenting great vegetation endemism. Baruzeiro (Dipteryx alata Vog.), native from this biome, is an economically important species, with an incipient market due to the lack of commercial plantations. This highlights the need to develop and provide the basis for the domestication of this species. Thus, this study evaluated different concentrations of MS medium, using baruzeiro intact or cut seeds for in vitro establishment. Seeds from baruzeiro ripe fruits were decontaminated and were left intact or partially cut; subsequently, the seeds were inoculated into flasks with different concentrations of MS culture medium. The experimental design was completely randomized as a 5 x 2 factorial, consisting of 5 MS medium concentrations (0, 25, 50, 75 or 100%) and 2 types of seeds (intact or partially cut seeds), with three replications. Each experimental unit consisted of five flasks and 10 plants. After five months of incubation, the contamination of explants, seed germination, the number of fully developed plants and the dry masses of shoot and root of baruzeiros were evaluated. Intact seeds provided better results for all characteristics evaluated. The increased concentration of MS medium resulted in mass gain of plants; however, the use of MS medium 0% provided greater percentage of fully developed plants, the most interesting feature for baruzeiro in vitro establishment.

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Section: Resultsmentioning

confidence: 99%

Concentration of ms medium and cutting of seeds on in vitro establishment of baruzeiro (Dipteryx alata Vog.)

Pinhal¹,

Araruna²,

Carneiro³

et al. 2017

Biosci. J.

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“…A positive effect of GA 3 on the in vitro germination percentage of 'Niagara Rosada' seeds was reported by Val et al (2010) and in 'Isabella' grape by Celik (2001), in different substrates. In seeds, GA 3 acts on the synthesis and activation of the hydrolytic enzymes present in the endosperm tissue (MOSHKOV et al, 2008).…”

mentioning

confidence: 86%

“…In grape breeding programs, seeds obtained from controlled crosses are very important materials of propagation (GISBERT et al, 2018). However, the low germination percentage of grape seeds constitutes a major obstacle to breeders (WANG et al, 2009;VAL et al, 2010). In grape seeds, dormancy is the main cause of low germination percentages (CELIK, 2001;WANG et al, 2009).…”

mentioning

confidence: 99%

“…Seeds were cut in the micropyle region and in the upper region using cuticle pliers, in accordance with the methodology of Val et al (2010). In a laminar flow hood, the seeds were then disinfected in 70% alcohol for 30 s, then in for 20 min a 1.0% sodium hypochlorite (NaClO) solution with two drops of Tween ® 20 deposited for every 100 mL and lastly washed three times in autoclaved deionized water.…”

mentioning

confidence: 99%

“…In grape seeds, one of the reported types of dormancy is physical, caused by the thickness and hardness of the seed integument, which preclude the entry of water into the embryo (ELLIS et al, 1983). In in vitro conditions, Val et al (2010) suggested making cuts on the seed integument to facilitate water imbibing by the embryo. Thus, the cuts made in the micropyle region and in the upper region, in our study, managed to overcome physical dormancy and hydrate the embryo.…”

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confidence: 99%

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In vitro germination to overcome dormancy in seeds of ‘Red Globe’, ‘Italia’ and ‘Niagara Rosada’ grapes

et al. 2019

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Dormancy in grape seeds slows the progress of many breeding programs of the crop, culminating in low uniformity and low germination percentages. Conventional methods used to overcome dormancy are time-consuming. Thus, in vitro seed germination emerges as a promising alternative to ensure the germination of grape seeds. In this study, we examined the in vitro germination and vigor of seedlings originating from seeds of ‘Red Globe’, ‘Italia’ and ‘Niagara Rosada’ grapes in growth media supplemented with five concentrations of gibberellic acid (GA3) (0, 1.41, 2.83, 4.24 and 5.66 µmol L-1) for 47 days. The use of GA3 increased seed germination percentage and seedling vigor, in the three varieties. Therefore, for the in vitro germination of seeds of ‘Red Globe’ can be used between 1.41 to 4.24 µmol L-1 of GA3. For ‘Italia’ grapes is indicated 1.41 µmol L-1 from GA3 and for ‘Niagara Rosada’ grape is as between 1.41 to 5.66 µmol L-1 from GA3 can be used.

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Pollen morphology and availability of pollen and stigma in Syzygium (Myrtaceae)

Nacata¹,

Belonsi

Gasparino

et al. 2019

Rev. Bras. Frutic.

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The present study aimed to describe the pollen morphology in three species of Syzygium, to test pollen availability and stigma receptivity. The pollen was analyzed by light and scanning microscopy to show the detailed ornamentation of the pollen grains. Pollen availability was measured according to two protocols. Stigmatic receptivity was tested at different stages of flower development. There are differences among the pollen morphology for the species studied; when the polar and equatorial diameters are measured in the equatorial view of the pollen grains, it is observed that S. jambos is the largest species concerning the two values of the diameters, S. malaccense is the smallest species and S. aqueum, the largest species in relation to the polar diameter in the equatorial view. For the equatorial diameter in equatorial view, S. aqueum showed the smallest diameters and S. malaccense, the major diameters, but the two species overlap in the values of the measured diameters. There are variations in the number of apertures in the pollen grains. Alexander’s stain is more sensitive to estimate pollen availability and the species S. aqueum and S. jambos have the same schedules of pollen availability and stigma receptivity.

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Quebra de dormência de sementes da videira cv. niágara rosada sem estratificação

Cited by 5 publications

References 6 publications

Concentration of ms medium and cutting of seeds on in vitro establishment of baruzeiro (Dipteryx alata Vog.)

Concentration of ms medium and cutting of seeds on in vitro establishment of baruzeiro (Dipteryx alata Vog.)

In vitro germination to overcome dormancy in seeds of ‘Red Globe’, ‘Italia’ and ‘Niagara Rosada’ grapes

Pollen morphology and availability of pollen and stigma in Syzygium (Myrtaceae)

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