Abstract
An experiment was conducted to investigate the effects of K/Ca ratios of nutrient solution on physiological traits, cut flower vase life and postharvest changes of rose. The main experiment was factorial based on completely randomized design with two cvs. of rose (Magic Red and Capitol), five K/Ca ratios in the nutrient solution (4:4, 6:4, 6:3, 8:3, 10:2) and three replications. Increasing the K/Ca ratio in the solution led to accumulation of K in the leaves but decreased the Ca concentration of the leaves. Furthermore, K/Ca ratio of the leaves was affected by K/Ca ratio of the nutrient solution and highest ratio of K/Ca was recorded for the leaves of plants fed with nutrient solution of 10:2 K/Ca ratio and the lowest K/Ca ratio of leaves was observed for plants which supplied with the nutrient solutions of 4:4 and 6:4 K/Ca ratios. The highest chlorophyll index was recorded for Capitol cv. and K/Ca ratios of nutrient solution had significant different effects on chlorophyll fluorescence. It was noted that rising K/Ca ratio caused lower longevity of cut flowers in both cvs. The highest necrosis of petals was occurred at 10:2 ratio of K/Ca and Magic Red cv. was more sensitive with the highest percentage of necrosis. The appropriate K/Ca ratio was obtained in the 6:4 ratio in terms of nutritional balance, reduced antagonistic effects of K and Ca, postharvest quality and more longevity of cut flowers.
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 10
Claim · model-written summary
Increasing solution K/Ca ratio increased leaf K accumulation.
- Taxon
- Roset0
- Treatment
- K/Ca ratio in the solutione0
- Outcome
- accumulation of K in the leavese0
- Direction
- Increasinge0
Not reportedComparator
Verbatim
e0“Increasing the K/Ca ratio in the solution led to accumulation of K in the leaves”
t0“Rose Cultivars”
Claim · model-written summary
Increasing solution K/Ca ratio decreased leaf Ca concentration.
- Taxon
- Roset0
- Treatment
- K/Ca ratio in the solutione0
- Outcome
- Ca concentration of the leavese0
- Direction
- decreasede0
Not reportedComparator
Verbatim
e0“Increasing the K/Ca ratio in the solution led to accumulation of K in the leaves but decreased the Ca concentration of the leaves”
t0“Rose Cultivars”
Claim · model-written summary
Leaf K/Ca ratio was highest at solution ratio 10:2.
Not reportedComparator
Verbatim
e0“highest ratio of K/Ca was recorded for the leaves of plants fed with nutrient solution of 10:2 K/Ca ratio”
t0“Rose Cultivars”
Claim · model-written summary
Leaf K/Ca ratio was lowest at solution ratios 4:4 and 6:4.
- Taxon
- Roset0
- Treatment
- nutrient solutions of 4:4 and 6:4 K/Ca ratiose0
- Outcome
- K/Ca ratio of leavese0
- Direction
- loweste0
Not reportedComparator
Verbatim
e0“lowest K/Ca ratio of leaves was observed for plants which supplied with the nutrient solutions of 4:4 and 6:4 K/Ca ratios”
t0“Rose Cultivars”
Claim · model-written summary
Capitol had the highest chlorophyll index.
Verbatim
e0“highest chlorophyll index was recorded for Capitol cv.”
t0“Rose Cultivars”
Claim · model-written summary
Nutrient-solution K/Ca ratios significantly affected chlorophyll fluorescence.
Not reportedComparatorDirection
Verbatim
e0“K/Ca ratios of nutrient solution had significant different effects on chlorophyll fluorescence”
t0“Rose Cultivars”
Claim · model-written summary
Rising K/Ca ratio reduced cut-flower longevity in both cultivars.
- Taxon
- Roset0
- Treatment
- rising K/Ca ratioe0
- Outcome
- longevity of cut flowerse0
- Direction
- lowere0
- Qualifier
- both cvs.e0
Not reportedComparator
Verbatim
e0“rising K/Ca ratio caused lower longevity of cut flowers in both cvs.”
t0“Rose Cultivars”
Claim · model-written summary
Petal necrosis was highest at a 10:2 K/Ca ratio.
Not reportedComparator
Verbatim
e0“highest necrosis of petals was occurred at 10:2 ratio of K/Ca”
t0“Rose Cultivars”
Claim · model-written summary
Magic Red was more sensitive and had the highest petal necrosis percentage.
Verbatim
e0“Magic Red cv. was more sensitive with the highest percentage of necrosis”
t0“Rose Cultivars”
Claim · model-written summary
The authors identified 6:4 K/Ca as appropriate for nutritional balance and cut-flower quality and longevity.
Not reportedDirection
Verbatim
e0“appropriate K/Ca ratio was obtained in the 6:4 ratio in terms of nutritional balance, reduced antagonistic effects of K and Ca, postharvest quality and more longevity of cut flowers”
t0“Rose Cultivars”
The same questions in other papers
calcium atom · pest · RosaPositive and negative results
1 in the opposite direction
- positive
calcium atom · disease · RosaPositive and negative results
2 in the opposite direction
- 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.