Reproductive Biology and Herbicidal Sensitivity of Maypop Passionflower (<i>Passiflora incarnata</i>)

Wehtje, Glenn; Reed, R. Bruce; Dute, Roland R.

doi:10.1017/s0043174500082709

Cited by 15 publications

(12 citation statements)

References 5 publications

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“…To increase the productivity, there should be availability of good planting material along with proper management practices. But seed dormancy has been reported for different Passiflora species, P. edulis (Hall et al, 2000), P. incarnate L. (Wehtje et al, 1985), P. mollissima (LaRosa, 1984) and P. nitida kunth (Passos et al, 2004). Most of the planting material is produced from seeds and there are reports that do not present satisfactory germination (Osipi, 2000).…”

Section: Introductionmentioning

confidence: 99%

Effects of Different Pre-Germination Treatment Methods on the Germination and Seedling Growth of Yellow Passion Fruit (Passiflora edulis var. flavicarpa)

Dey¹,

Dey²

2017

Int.J.Curr.Microbiol.App.Sci

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Section: Introductionmentioning

confidence: 99%

Effects of Different Pre-Germination Treatment Methods on the Germination and Seedling Growth of Yellow Passion Fruit (Passiflora edulis var. flavicarpa)

Dey¹,

Dey²

2017

Int.J.Curr.Microbiol.App.Sci

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“…Dormancy is considered as a strategy to avoid germination under certain conditions where seedling survival is likely to be low (Ellis et al, 1985a;Schmidt, 2000). Seed dormancy has been reported for different Passiflora species, example, P. edulis (Morley-Bunker, 1980;Hall et al, 2000;Alexandre et al, 2004), P. incarnata L. (Wehtje et al, 1985), P. mollissima (La Rosa, 1984), and P. nitida Kunth (Passos et al, 2004). According to Ellis et al (1985b), Passiflora species possess non-endospermic seeds, meaning seeds with only residual or no endosperm, but with mature embryos.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of different methods to overcome in vitro seed dormancy from yellow passion fruit

Rêgo¹,

Rêgo²,

Nattrodt³

et al. 2014

Afr. J. Biotechnol.

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Seeds from yellow passion fruit (Passiflora edulis Sims) present dormancy imposed by the seed-coat. The present study aimed to evaluate some methods to overcome dormancy of seeds from P. edulis grown under in vitro conditions. The experimental design was completely randomized in factorial scheme (15 scarification methods × 2 substrates: PlantMax ® and MS medium), constituting 30 treatments with 10 replicates. The following treatments were established: Control (untreated seeds); seeds soaked in water at room temperature for 12, 24 and 48 h; seeds soaked in hot water at 80°C for 1, 2.5 and 5 min; chemical scarification with sulphuric acid (98%) for 1, 5, and 10 min; immersion of the seeds in absolute ethanol for 5, 10 and 25 min; physical scarification with wood sandpaper (no. 125); and total seed coat removal with a Gavin ® mini-vise. After each treatment, the seeds were inoculated in vitro in two sterile substrates (MS medium or PlantMax ®). The results show that the best treatment to overcome dormancy of P. edulis seeds was total removal of seed coat with Garvin ® mini-vise. This treatment yielded 100% seed germination under in vitro conditions either on PlantMax ® or MS medium. Approximately 150 seeds per hour could be decoated according to the operator's skills. However, in some cases, there was physical damage to the zygotic embryo. Seed treated with sulphuric acid for 1 min also showed promising results (average 0.107). Seeds germinated within seven days after being treated with sulphuric acid and inoculated in vitro in PlantMax ® sterile substrate. Moreover, poor germination rates were achieved when seeds were treated with sulphuric acid, followed by inoculation in vitro onto MS medium (0.0711). All seeds germinated on in vitro PlantMax ® sterile substrate and presented an epinastic phenotype, possibly due the ethylene biosynthesis in vitro.

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“…The proliferated pericycle is a cylinder of parenchyma cells that forms between the secondary phloem and periderm of many roots as consequence of the division of residual pericycle cells (Esau, 1977). Buds originating in the proliferated pericycle have been found in field-collected roots of Euphorbia esula and Araucaria cunninghamii (Bakshi and Coupland, 1959;Raju, Coupland, and Steeves, 1964;Burrows, 1990), in tissue-cultured roots of Comptonia peregrina and Citrus aurantifolia (Goforth and Torrey, 1977;Bhat, Chitralekha, and Chandel, 1992), and in root cuttings of Passiflora incanata, Pyrus malus, and Chondrilla juncea (Stoutemyer, 1937;Robinson and Schwabe, 1977;Schirman and Zamora, 1978;Wehtje, Reed, and Dute, 1985). In P. malus these buds form at random locations (Stoutemyer, 1937;Robinson and Schwabe, 1977), but in C. peregrina, A. cunninghamii, and E. esula they form preferentially opposite lateral root traces or vascular rays (Bakshi and Coupland, 1959;Goforth and Torrey, 1977;Burrows, 1990).…”

mentioning

confidence: 99%

The mode of origin of root buds and root sprouts in the clonal tree Sassafras albidum (Lauraceae)

Bosela

Ewers

1997

American J of Botany

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The developmental anatomy of root buds and root sprouts was examined in the clonal tree Sassafras albidum. Root samples from 13 clones that varied widely in age and vigor were sectioned and two types of buds were found, "additional" buds and "reparative" buds. Additional buds form during the early growth of uninjured roots and they perennate by growing outwards in concert with the vascular cambium such that bud traces are produced in the secondary xylem. Reparative buds form de novo in response to senescence, injuries, or other types of disturbance. Reparative buds were found on the roots of seven of the clones, whereas additional buds were found on the roots of all 13 clones. The reparative buds had originated in the proliferated pericycle, where they were subtended by sphaeroblasts, or spherical nodules of wood. Few of the reparative buds were vascularized and none were connected with the vasculature of their parent roots. In contrast, most of the additional buds were vascularized, and the leaf traces of several of the additional buds appeared to be contiguous with the conducting xylem of their parent roots. To determine whether both bud types were functional, 82 field-collected root sprouts and 44 incubation-induced sprouts were sectioned at the root-sprout junction and examined for evidence relating to their mode of origin. None of the sprouts were subtended by sphaeroblasts, but 98% were subtended by bud traces, which indicated that they had originated from additional buds. Although reparative buds were more common than additional buds on some of the root samples, they appear to be dysfunctional at sprouting. Additional buds, on the other hand, are able to sprout both as a normal part of clonal spread and from root cuttings.

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Reproductive Biology and Herbicidal Sensitivity of Maypop Passionflower (Passiflora incarnata)

Cited by 15 publications

References 5 publications

Effects of Different Pre-Germination Treatment Methods on the Germination and Seedling Growth of Yellow Passion Fruit (Passiflora edulis var. flavicarpa)

Effects of Different Pre-Germination Treatment Methods on the Germination and Seedling Growth of Yellow Passion Fruit (Passiflora edulis var. flavicarpa)

Evaluation of different methods to overcome in vitro seed dormancy from yellow passion fruit

The mode of origin of root buds and root sprouts in the clonal tree Sassafras albidum (Lauraceae)

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