Abstract
The absence of nitrogen or phosphorus in the nutrient medium affected quantitative anatomical characteristics of the first two leaves of spring barley: nitrogen deficiency brought about changes in both the leaf size and characteristics of stomata, whereas the effect of phosphorus absence was insignificant. N deficiency had an opposite effect on certain characteristics connected with volume ratios of tissues than that of P. The most marked finding is the decrease in the leaf volume and specific volume, and in specific volumes of most tissues at N deficiency and their increase at P deficiency. On the other hand, the number of stomata per unit leaf or photosynthetic tissue volume increased as the result of N deficiency and decreased at P deficiency.
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Claims 9
Claim · model-written summary
N deficiency decreased leaf volume and specific volume of spring barley leaves.
- Taxon
- spring barley
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Hordeum vulgaree1 - Organ / stage
- first two leavese1
- Treatment
- N deficiencye2
- Outcome
- leaf volume and specific volumee2
- Direction
- decreasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e1“The absence of nitrogen or phosphorus in the nutrient medium affected quantitative anatomical characteristics of the first two leaves of spring barley”
e2“The most marked finding is the decrease in the leaf volume and specific volume, and in specific volumes of most tissues at N deficiency and their increase at P deficiency”
Claim · model-written summary
N deficiency decreased the specific volumes of most tissues in spring barley leaves.
- Taxon
- spring barleyHordeum vulgaree1
- Treatment
- N deficiencye2
- Outcome
- specific volumes of most tissuese2
- Direction
- decreasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The absence of nitrogen or phosphorus in the nutrient medium affected quantitative anatomical characteristics of the first two leaves of spring barley”
e2“The most marked finding is the decrease in the leaf volume and specific volume, and in specific volumes of most tissues at N deficiency and their increase at P deficiency”
Claim · model-written summary
P deficiency increased leaf volume and specific volume of spring barley leaves.
- Taxon
- spring barleyHordeum vulgaree1
- Treatment
- P deficiencye2
- Outcome
- leaf volume and specific volumee2
- Direction
- increasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The absence of nitrogen or phosphorus in the nutrient medium affected quantitative anatomical characteristics of the first two leaves of spring barley”
e2“The most marked finding is the decrease in the leaf volume and specific volume, and in specific volumes of most tissues at N deficiency and their increase at P deficiency”
Claim · model-written summary
P deficiency increased the specific volumes of most tissues in spring barley leaves.
- Taxon
- spring barleyHordeum vulgaree1
- Treatment
- P deficiencye2
- Outcome
- specific volumes of most tissuese2
- Direction
- increasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The absence of nitrogen or phosphorus in the nutrient medium affected quantitative anatomical characteristics of the first two leaves of spring barley”
e2“The most marked finding is the decrease in the leaf volume and specific volume, and in specific volumes of most tissues at N deficiency and their increase at P deficiency”
Claim · model-written summary
N deficiency changed leaf size and the characteristics of stomata in spring barley.
- Taxon
- spring barleyHordeum vulgaree1
- Treatment
- nitrogen deficiencye3
- Outcome
- leaf size and characteristics of stomatae3
- Direction
- changese3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The absence of nitrogen or phosphorus in the nutrient medium affected quantitative anatomical characteristics of the first two leaves of spring barley”
e3“nitrogen deficiency brought about changes in both the leaf size and characteristics of stomata, whereas the effect of phosphorus absence was insignificant”
Claim · model-written summary
P absence had no significant effect on leaf size or characteristics of stomata in spring barley.
- Taxon
- spring barleyHordeum vulgaree1
- Treatment
- phosphorus absencee3
- Outcome
- leaf size and characteristics of stomatae3
- Direction
- no_changeinferrede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The absence of nitrogen or phosphorus in the nutrient medium affected quantitative anatomical characteristics of the first two leaves of spring barley”
e3“nitrogen deficiency brought about changes in both the leaf size and characteristics of stomata, whereas the effect of phosphorus absence was insignificant”
Claim · model-written summary
N and P deficiency had opposite effects on characteristics connected with volume ratios of tissues in spring barley.
- Taxon
- spring barleyHordeum vulgaree1
- Treatment
- N deficiencye4
- Outcome
- characteristics connected with volume ratios of tissuese4
- Direction
- opposite effecte4
- Comparator
- that of Pe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The absence of nitrogen or phosphorus in the nutrient medium affected quantitative anatomical characteristics of the first two leaves of spring barley”
e4“N deficiency had an opposite effect on certain characteristics connected with volume ratios of tissues than that of P”
Claim · model-written summary
N deficiency increased the number of stomata per unit leaf or photosynthetic tissue volume in spring barley.
- Taxon
- spring barleyHordeum vulgaree1
- Treatment
- N deficiencye5
- Outcome
- the number of stomata per unit leaf or photosynthetic tissue volumee5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The absence of nitrogen or phosphorus in the nutrient medium affected quantitative anatomical characteristics of the first two leaves of spring barley”
e5“On the other hand, the number of stomata per unit leaf or photosynthetic tissue volume increased as the result of N deficiency and decreased at P deficiency”
Claim · model-written summary
P deficiency decreased the number of stomata per unit leaf or photosynthetic tissue volume in spring barley.
- Taxon
- spring barleyHordeum vulgaree1
- Treatment
- P deficiencye5
- Outcome
- the number of stomata per unit leaf or photosynthetic tissue volumee5
- Direction
- decreasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The absence of nitrogen or phosphorus in the nutrient medium affected quantitative anatomical characteristics of the first two leaves of spring barley”
e5“On the other hand, the number of stomata per unit leaf or photosynthetic tissue volume increased as the result of N deficiency and decreased at P deficiency”
The same questions in other papers
phosphorus · physiology: gas exchange · Hordeum vulgare (barley)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- 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.