Abstract
The Passifloraceae family is one of the most representative in tropical America, with food, pharmaceutical, and ornamental importance. This study evaluated seed morphometry and germination of eight accessions of four Passiflora edible species, P. edulis; P. ligularis; P. quadrangularis; and P. tripartita var. mollissima, by studying accessions conserved several years in the gene bank (−15 °C) and recently collected accessions. Four experimental phases were carried out as follows: (1) morphometric characterization of seeds with qualitative and quantitative variables; (2) evaluation of germination under two thermal regimes (20 °C/30 °C and 25 °C); (3) application of six pre-germination treatments to overcome dormancy; and (4) tetrazolium tests. In phase 1, P. quadrangularis stood out for its unique morphological characteristics according to multivariate analysis. In phase 2, the alternating thermal regime (20 °C/30 °C) promoted the highest germination. In phase 3, the germination response was specific to each species: mechanical scarification in P. edulis (85.7%), KNO3 (0.5%) in P. ligularis (35.7%), control in P. quadrangularis (71.1%), and gibberellic acid (GA3 400 ppm) in P. tripartita (71.4%). The tetrazolium phase 4 identified the viability status of the seeds. It is concluded that the differences in morphometry and germination reflect the intrinsic characteristics of each species, highlighting the importance of specific protocols for their germination. This study provides tools to optimize the conservation and regeneration of Passiflora spp. germplasm under ex situ conditions, as a genetic base to be utilized in the future.
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Claims 8
Claim · model-written summary
P. quadrangularis stood out for unique seed morphological characteristics in multivariate analysis.
- Taxon
- P. quadrangularis
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Passiflora quadrangularise0 - Outcome
- unique morphological characteristicse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“P. quadrangularis stood out for its unique morphological characteristics according to multivariate analysis”
Claim · model-written summary
The alternating thermal regime of 20 C/30 C promoted the highest germination compared with 25 C.
- Taxon
- Passiflora
Passiflorat0 - Treatment
- alternating thermal regime (20 °C/30 °C)e0
- Outcome
- germinatione0
- Direction
- higheste0
- Comparator
- 25 °Ce1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the alternating thermal regime (20 °C/30 °C) promoted the highest germination”
e1“two thermal regimes (20 °C/30 °C and 25 °C)”
t0“Passiflora spp.”
Claim · model-written summary
In P. edulis the best-reported pre-germination treatment was mechanical scarification, with 85.7% germination.
- Taxon
- P. edulis
Passiflora edulise1 - Treatment
- mechanical scarificatione1
- Outcome
- germination responsee0
- Value
- 85.7%e1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In phase 3, the germination response was specific to each species”
e1“mechanical scarification in P. edulis (85.7%)”
Claim · model-written summary
In P. ligularis the reported treatment was KNO3 (0.5%), with 35.7% germination.
- Taxon
- P. ligularis
Passiflora ligularise1 - Treatment
- KNO3 (0.5%)e1
- Outcome
- germination responsee0
- Value
- 35.7%e1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In phase 3, the germination response was specific to each species”
e1“KNO3 (0.5%) in P. ligularis (35.7%)”
Claim · model-written summary
In P. quadrangularis the control gave the reported germination of 71.1%.
- Taxon
- P. quadrangularisPassiflora quadrangularise1
- Treatment
- controle1
- Outcome
- germination responsee0
- Value
- 71.1%e1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In phase 3, the germination response was specific to each species”
e1“control in P. quadrangularis (71.1%)”
Claim · model-written summary
In P. tripartita the reported treatment was gibberellic acid (GA3 400 ppm), with 71.4% germination.
- Taxon
- P. tripartita
Passiflora tripartitae1 - Treatment
- gibberellic acid (GA3 400 ppm)e1
- Outcome
- germination responsee0
- Value
- 71.4%e1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In phase 3, the germination response was specific to each species”
e1“gibberellic acid (GA3 400 ppm) in P. tripartita (71.4%)”
Claim · model-written summary
The tetrazolium test identified the viability status of the Passiflora seeds.
- Taxon
- PassifloraPassiflorat0
- Outcome
- viability status of the seedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The tetrazolium phase 4 identified the viability status of the seeds”
t0“Passiflora spp.”
Claim · model-written summary
The authors recommend specific germination protocols for each species.
- Taxon
- PassifloraPassiflorat0
- Outcome
- specific protocols for their germinatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highlighting the importance of specific protocols for their germination”
t0“Passiflora spp.”
The same questions in other papers
potassium nitrate · growth · Passiflora ligularis (sweet granadilla)Results agree
1 paper in the same direction as this paper
- positive
seed treatment · growth · Passiflora edulis (passion fruit)Results agree
2 papers in the same direction as this paper
- positive
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.