Abstract
SummaryThe amount and sugar concentration of nectar produced by two cultivars (Candle, Tobin) of Brassica campestris L. and three cultivars (Altex, Andor, Regent) of Brassica napus L. were determined throughout the day. The effect of temperature and relative humidity on nectar production as well as the preferences for cultivars by honeybees were examined. Cultivars of B. napus produced more nectar than did those of B. campestris. The flowers of both species produced more nectar, with a lower sugar concentration, in the mornings. Correlations were found between the amounts and concentrations of nectar produced and temperature and relative humidity. Flowers sampled repeatedly produced more nectar, with a lower sugar concentration, than did those sampled only once per day. Honeybees did not show obvious preferences for any of the cultivars investigated.
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Claims 7
Claim · model-written summary
B. napus cultivars produced more nectar than B. campestris cultivars.
- Taxon
- B. napus
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse0 - Outcome
- nectare0
- Direction
- moree0
- Comparator
- B. campestrise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“Cultivars of B. napus produced more nectar than did those of B. campestris”
Claim · model-written summary
Both species produced more nectar in the morning.
- Taxon
- Brassica campestris L.
.jpg?width=60)
Brassica rapa subsp. oleiferae1 - Organ / stage
- flowerse0
- Outcome
- nectare0
- Direction
- moree0
- Setting
- in the morningse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The flowers of both species produced more nectar, with a lower sugar concentration, in the mornings”
e1“Brassica campestris L. and three cultivars (Altex, Andor, Regent) of Brassica napus L.”
Claim · model-written summary
Both species had lower morning nectar sugar concentration.
- Taxon
- Brassica napus L.Brassica napuse1
- Organ / stage
- flowerse0
- Outcome
- sugar concentratione0
- Direction
- lowere0
- Setting
- in the morningse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The flowers of both species produced more nectar, with a lower sugar concentration, in the mornings”
e1“Brassica campestris L. and three cultivars (Altex, Andor, Regent) of Brassica napus L.”
Claim · model-written summary
Nectar amount and concentration correlated with temperature and relative humidity.
- Taxon
- Brassica NapusL.t0
- Outcome
- amounts and concentrations of nectar producede0
- Qualifier
- temperature and relative humiditye0
Not reportedSettingDirection
Verbatim
e0“Correlations were found between the amounts and concentrations of nectar produced and temperature and relative humidity”
t0“Brassica CampestrisL. andBrassica NapusL.”
Claim · model-written summary
Repeatedly sampled flowers produced more nectar than flowers sampled once per day.
Verbatim
e0“Flowers sampled repeatedly produced more nectar, with a lower sugar concentration, than did those sampled only once per day”
t0“Brassica CampestrisL. andBrassica NapusL.”
Claim · model-written summary
Repeatedly sampled flowers had lower nectar sugar concentration.
Verbatim
e0“Flowers sampled repeatedly produced more nectar, with a lower sugar concentration, than did those sampled only once per day”
t0“Brassica CampestrisL. andBrassica NapusL.”
Claim · model-written summary
Honeybees showed no obvious cultivar preference.
- Taxon
- Brassica NapusL.t0
- Interactor
- Honeybees
_Apis_mellifera_(female)_-_on_viburnum_tinus_flowers.jpg?width=60)
Apis melliferae0pollinator - Outcome
- preferences for any of the cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Apis_mellifera_(female)_-_on_viburnum_tinus_flowers.jpg?width=500)
Verbatim
e0“Honeybees did not show obvious preferences for any of the cultivars investigated”
t0“Brassica CampestrisL. andBrassica NapusL.”