Abstract
The analysis of photosynthetic activity of Helianthus tuberosus leaves was based on the field experiment carried out in 2003-2005 in The Experimental Station in Parczew on good rye complex soil. The experiment was performed by means of randomized sub-blocks in 3 replications, including factors: the 1st order - varieties (Albik and Rubik), and the 2nd order - mineral fertilization at rates of: N0P0K0, N0P44K125; N50P44K125; N100P44K125; N150P44K125; N200P44K125, recalculated onto the elemental forms on a background of full rate of FYM (30 t ha -l ). The plant's photosynthetic activity during flowering was evaluated by means of leaf chlorophyll fluorescence induction measurements applying PAM-2000 device. Following fluorescence parameters were determined: maximum efficiency of a photosystem PS II (FV/Fm), current number of electrons transported in PS II under conditions of light adaptation ΦPSII; efficiency of open units PS II - FV'/Fm'; coefficient of photochemical (qP) and non-photochemical fluorescence quenching (qN). It was found that maximum efficiency of the photosystem PS II (Fv/Fm) was the most stable chlorophyll fluorescence indicator for Helianthus tuberosus, while coefficient of non-photochemical fluorescence quenching (qN) - the most changeable. Rubik cv. appeared to be the variety having higher values of Fv/Fm, ΦPSII, qP, and qN, as well as their better stability, than Albik cv. Mineral fertilization applied at Helianthus tuberosus cultivation contributed to the decrease of primary photosynthetic reactions in photosystem II (Fv/Fm) and disturbances of the efficiency of open units PS II (Fv'/Fm'). The decrease of chlorophyll quantum efficiency (ΦPSII), photochemical chlorophyll fluorescence quenching, and non-photochemical chlorophyll fluorescence quenching (qN) were also observed.
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Claims 7
Claim · model-written summary
Fv/Fm was the most stable fluorescence indicator.
- Taxon
- Helianthus tuberosus
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Helianthus tuberosuse0 - Outcome
- most stable chlorophyll fluorescence indicatore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“maximum efficiency of the photosystem PS II (Fv/Fm) was the most stable chlorophyll fluorescence indicator for Helianthus tuberosus”
Claim · model-written summary
qN was the most changeable fluorescence indicator.
- Taxon
- Helianthus tuberosusHelianthus tuberosust0
- Outcome
- most changeablee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“coefficient of non-photochemical fluorescence quenching (qN) - the most changeable”
t0“PHOTOSYNTHETIC ACTIVITY OF HELIANTHUS TUBEROSUS L. DEPENDING ON A SOIL AND MINERAL FERTILIZATION”
Claim · model-written summary
Rubik had higher and more stable Fv/Fm, ΦPSII, and qP than Albik.
- Taxon
- Helianthus tuberosusHelianthus tuberosust0
- Material
- Rubik cv.e0
- Outcome
- Fv/Fm, ΦPSII, qPe0
- Direction
- highere0
- Comparator
- Albik cv.e0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rubik cv. appeared to be the variety having higher values of Fv/Fm, ΦPSII, qP, and qN, as well as their better stability, than Albik cv.”
t0“PHOTOSYNTHETIC ACTIVITY OF HELIANTHUS TUBEROSUS L. DEPENDING ON A SOIL AND MINERAL FERTILIZATION”
Claim · model-written summary
Rubik had higher and more stable qN than Albik.
- Taxon
- Helianthus tuberosusHelianthus tuberosust0
- Material
- Rubik cv.e0
- Outcome
- qNe0
- Direction
- highere0
- Comparator
- Albik cv.e0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rubik cv. appeared to be the variety having higher values of Fv/Fm, ΦPSII, qP, and qN, as well as their better stability, than Albik cv.”
t0“PHOTOSYNTHETIC ACTIVITY OF HELIANTHUS TUBEROSUS L. DEPENDING ON A SOIL AND MINERAL FERTILIZATION”
Claim · model-written summary
Fertilization decreased PS II maximum efficiency.
- Taxon
- Helianthus tuberosusHelianthus tuberosuse0
- Treatment
- Mineral fertilizatione0
- Outcome
- primary photosynthetic reactions in photosystem II (Fv/Fm)e0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mineral fertilization applied at Helianthus tuberosus cultivation contributed to the decrease of primary photosynthetic reactions in photosystem II (Fv/Fm)”
Claim · model-written summary
Fertilization disturbed efficiency of open PS II units.
- Taxon
- Helianthus tuberosusHelianthus tuberosuse0
- Treatment
- Mineral fertilizatione0
- Outcome
- efficiency of open units PS II (Fv'/Fm')e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mineral fertilization applied at Helianthus tuberosus cultivation contributed to the decrease of primary photosynthetic reactions in photosystem II (Fv/Fm) and disturbances of the efficiency of open units PS II (Fv'/Fm')”
Claim · model-written summary
Fertilization decreased ΦPSII and two fluorescence quenching metrics.
- Taxon
- Helianthus tuberosusHelianthus tuberosust0
- Treatment
- Mineral fertilizationt1
- Outcome
- chlorophyll quantum efficiency (ΦPSII), photochemical chlorophyll fluorescence quenching, and non-photochemical chlorophyll fluorescence quenching (qN)e0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The decrease of chlorophyll quantum efficiency (ΦPSII), photochemical chlorophyll fluorescence quenching, and non-photochemical chlorophyll fluorescence quenching (qN) were also observed.”
t0“PHOTOSYNTHETIC ACTIVITY OF HELIANTHUS TUBEROSUS L. DEPENDING ON A SOIL AND MINERAL FERTILIZATION”
t1“PHOTOSYNTHETIC ACTIVITY OF HELIANTHUS TUBEROSUS L. DEPENDING ON A SOIL AND MINERAL FERTILIZATION”
The same questions in other papers
fertilization · molecular: metabolites · Helianthus tuberosus (Jerusalem artichoke)Positive and negative results
1 paper in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
5 papers more in this group
See all 9 papers →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.