Paper · 1930 · Botanical Gazette

Microsporogenesis in the Cucurbitaceae

Sara F. Passmore

11
claims
11
verbatim quotes
10
citations
1
research areas
—
Not open access

Abstract

1. Darkly staining granules are present among the bivalent chromosomes in late diakinesis in all members of Cucurbita, but are absent in Citrullus, Luffa, and Cucumis. 2. Cucurbita pepo and C. maxima each has twenty bivalent chromosomes. 3. Citrullus vulgaris has eleven bivalent chromosomes; Luffa cylindrica, eleven; Cucumis melo, twelve. Cucumis sativus has four-teen chromosomes in the diploid cells. 4. The homologous chromosomes pass to the poles at anaphase with no evidence of lagging in Cucurbita pepo, C. maxima, Citrullus vulgaris, Luffa cylindrica, and Cucumis melo. 5. Chromosomes are distributed irregularly on the spindle at anaphase in Cucumis sativus. 6. The nucleolus shows a tendency to bud in both Luffa cylindrica and Cucumis sativus, and is often present after the spindle fibers appear in these species.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 11

Observationobservedoriginal resultmeasured

Claim · model-written summary

Darkly staining granules are present among the bivalent chromosomes in late diakinesis in all members of Cucurbita.

Taxon
CucurbitaCucurbitae0
Organ / stage
late diakinesise0
Outcome
Darkly staining granules are presente0

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cucurbita
Cucurbita · Taxon · picture from its Wikimedia Commons categoryAffitisciuto · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Darkly staining granules are present among the bivalent chromosomes in late diakinesis in all members of Cucurbita, but are absent in Citrullus, Luffa, and Cucumis”

✓ located verbatim in the source · abstract, characters 3–166 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Darkly staining granules among the bivalent chromosomes in late diakinesis are absent in Citrullus, Luffa and Cucumis.

Taxon
Citrullus, Luffa, and CucumisCitrullusCucumisLuffae0
Organ / stage
late diakinesise0
Outcome
Darkly staining granulese0

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Citrullus
Citrullus · Taxon · picture of the genus (one of its species)Len Worthington · CC BY-SA 2.0 · Wikimedia Commons ↗
Cucumis
Cucumis · Taxon · picture of the genus (one of its species)Bff · CC BY-SA 3.0 · Wikimedia Commons ↗
Luffa
Luffa · Taxon · picture of the genus (one of its species)‘Uncle Carl’ (カールおじさん). · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Darkly staining granules are present among the bivalent chromosomes in late diakinesis in all members of Cucurbita, but are absent in Citrullus, Luffa, and Cucumis”

✓ located verbatim in the source · abstract, characters 3–166 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Cucurbita pepo has twenty bivalent chromosomes.

Taxon
Cucurbita pepoCucurbita pepoe0
Outcome
bivalent chromosomese0
Value
twentye0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cucurbita pepo
Cucurbita pepo · TaxonFrank Vincentz · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Cucurbita pepo and C. maxima each has twenty bivalent chromosomes”

✓ located verbatim in the source · abstract, characters 171–236 · show in text ↑

schema checkedfield values found in the cited quotesPermalinkReport an issue

Observationobservedoriginal resultmeasured

Claim · model-written summary

Cucurbita maxima has twenty bivalent chromosomes.

Taxon
C. maximaCucurbita maximae0
Outcome
bivalent chromosomese0
Value
twentye0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cucurbita maxima
Cucurbita maxima · Taxonmikami-kun · CC BY 4.0 · iNaturalist ↗

Verbatim

e0

“Cucurbita pepo and C. maxima each has twenty bivalent chromosomes”

✓ located verbatim in the source · abstract, characters 171–236 · show in text ↑

schema checkedfield values found in the cited quotesPermalinkReport an issue

Observationobservedoriginal resultmeasured

Claim · model-written summary

Citrullus vulgaris has eleven bivalent chromosomes.

Taxon
Citrullus vulgarisCitrullus lanatuse0
Outcome
bivalent chromosomese0
Value
elevene0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Citrullus lanatus
Citrullus lanatus · TaxonKumon · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Citrullus vulgaris has eleven bivalent chromosomes”

✓ located verbatim in the source · abstract, characters 241–291 · show in text ↑

schema checkedfield values found in the cited quotesPermalinkReport an issue

Observationobservedoriginal resultmeasured

Claim · model-written summary

Luffa cylindrica has eleven bivalent chromosomes.

Taxon
Luffa cylindricae0
Outcome
elevene0
Value
elevene0

Verbatim

e0

“Luffa cylindrica, eleven”

✓ located verbatim in the source · abstract, characters 293–317 · show in text ↑

schema checkedfield values found in the cited quotesPermalinkReport an issue

Observationobservedoriginal resultmeasured

Claim · model-written summary

Cucumis melo has twelve bivalent chromosomes.

Taxon
Cucumis meloCucumis meloe0
Outcome
twelvee0
Value
twelvee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cucumis melo
Cucumis melo · TaxonUSDA photo by Scott Bauer. Image Number K7355-11. · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Cucumis melo, twelve”

✓ located verbatim in the source · abstract, characters 319–339 · show in text ↑

schema checkedfield values found in the cited quotesPermalinkReport an issue

Observationobservedoriginal resultmeasured

Claim · model-written summary

Cucumis sativus has fourteen chromosomes in the diploid cells.

Taxon
Cucumis sativusCucumis sativuse0
Organ / stage
diploid cellse0
Outcome
chromosomese0
Value
four-teene0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Cucumis sativus has four-teen chromosomes in the diploid cells”

✓ located verbatim in the source · abstract, characters 341–403 · show in text ↑

schema checkedfield values found in the cited quotesPermalinkReport an issue

Observationobservedoriginal resultmeasured

Claim · model-written summary

Homologous chromosomes pass to the poles at anaphase with no evidence of lagging in Cucurbita pepo, C. maxima, Citrullus vulgaris, Luffa cylindrica and Cucumis melo.

Taxon
Cucurbita pepo, C. maxima, Citrullus vulgaris, Luffa cylindrica, and Cucumis meloe0
Organ / stage
anaphasee0
Outcome
no evidence of lagginge0

Verbatim

e0

“The homologous chromosomes pass to the poles at anaphase with no evidence of lagging in Cucurbita pepo, C. maxima, Citrullus vulgaris, Luffa cylindrica, and Cucumis melo”

✓ located verbatim in the source · abstract, characters 408–577 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Chromosomes are distributed irregularly on the spindle at anaphase in Cucumis sativus.

Taxon
Cucumis sativusCucumis sativuse0
Organ / stage
anaphasee0
Outcome
Chromosomes are distributed irregularly on the spindlee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Chromosomes are distributed irregularly on the spindle at anaphase in Cucumis sativus”

✓ located verbatim in the source · abstract, characters 582–667 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The nucleolus tends to bud in both Luffa cylindrica and Cucumis sativus, and is often present after the spindle fibers appear in these species.

Taxon
Luffa cylindrica and Cucumis sativuse0
Outcome
nucleolus shows a tendency to bude0

Verbatim

e0

“The nucleolus shows a tendency to bud in both Luffa cylindrica and Cucumis sativus”

✓ located verbatim in the source · abstract, characters 672–754 · show in text ↑