Abstract
Two field experiments were carried out at Sids Agric. Res. Station, Beni-Suef Governorate, in 2007 and 2008 seasons, to study response of growth, fruiting and yield of the Egyptian cotton cultivar Giza 80 (G. barbadense L.) to foliar application with indole acetic acid (IAA) and Kinetin (a synthetic cytokinin). Besides the control treatment, two concentrations of each of IAA (25 and 50 ppm) and kinetin (10 and 20 ppm) and their combinations were application twice, at the start and peak of flowering stages. Results revealed that, cotton plants treated with various treatments of IAA and/or kinetin showed higher leaves content of chlorophyll a, b and total chlorophylls than those of untreated ones. However, only some treatments of IAA and/or kinetin significantly increased plant height, numbers of fruiting branches/plant and open bolls/plant in both seasons; number of main stem nodes and seed cotton yield/fad., in 2007 season only; and total fruiting sites/plant and seed index in 2008 season only, but they significantly decreased fruit shedding% and earliness% in 2007 season only. Application 50 ppm IAA alone significantly decreased earliness% in 2007 season, and either alone or with kinetin at both levels gave the highest values of plant growth parameters, but their effects on fruit shedding and yield did not reach the significant level. In general, the most consistently positive effects on plant fruiting and seed cotton yield were given by application 25 ppm IAA alone or 20 ppm kinetin alone or both.
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Claims 9
Claim · model-written summary
IAA and/or kinetin foliar treatments raised leaf chlorophyll a, b and total chlorophyll content of cotton above untreated plants.
- Taxon
- cotton
Gossypium hirsutumt0 - Organ / stage
- leavese1
- Treatment
- IAA and/or kinetine1
- Outcome
- leaves content of chlorophyll a, b and total chlorophyllse1
- Direction
- highere1
- Comparator
- untreated onese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RESPONSE OF COTTON GROWTH AND YIELD”
e1“cotton plants treated with various treatments of IAA and/or kinetin showed higher leaves content of chlorophyll a, b and total chlorophylls than those of untreated ones”
Claim · model-written summary
Some IAA and/or kinetin treatments significantly increased plant height, fruiting branches and open bolls per plant of cotton in both seasons.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- IAA and/or kinetine4
- Outcome
- plant height, numbers of fruiting branches/plant and open bolls/plante4
- Direction
- increasede4
- Qualifier
- only some treatmentse4
- Comparator
- control treatmente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RESPONSE OF COTTON GROWTH AND YIELD”
e2“Besides the control treatment, two concentrations of each of IAA (25 and 50 ppm) and kinetin (10 and 20 ppm) and their combinations were application twice, at the start and peak of flowering stages”
e4“only some treatments of IAA and/or kinetin significantly increased plant height, numbers of fruiting branches/plant and open bolls/plant in both seasons; number of main stem nodes and seed cotton yield/fad., in 2007 season only; and total fruiting sites/plant and seed index in 2008 season only”
Claim · model-written summary
Some IAA and/or kinetin treatments significantly increased main stem node number and seed cotton yield in the 2007 season.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- IAA and/or kinetine4
- Outcome
- number of main stem nodes and seed cotton yield/fad.e4
- Direction
- increasede4
- Qualifier
- in 2007 season onlye4
- Comparator
- control treatmente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RESPONSE OF COTTON GROWTH AND YIELD”
e2“Besides the control treatment, two concentrations of each of IAA (25 and 50 ppm) and kinetin (10 and 20 ppm) and their combinations were application twice, at the start and peak of flowering stages”
e4“only some treatments of IAA and/or kinetin significantly increased plant height, numbers of fruiting branches/plant and open bolls/plant in both seasons; number of main stem nodes and seed cotton yield/fad., in 2007 season only; and total fruiting sites/plant and seed index in 2008 season only”
Claim · model-written summary
Some IAA and/or kinetin treatments significantly increased total fruiting sites and seed index of cotton in the 2008 season.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- IAA and/or kinetine4
- Outcome
- total fruiting sites/plant and seed indexe4
- Direction
- increasede4
- Qualifier
- in 2008 season onlye4
- Comparator
- control treatmente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RESPONSE OF COTTON GROWTH AND YIELD”
e2“Besides the control treatment, two concentrations of each of IAA (25 and 50 ppm) and kinetin (10 and 20 ppm) and their combinations were application twice, at the start and peak of flowering stages”
e4“only some treatments of IAA and/or kinetin significantly increased plant height, numbers of fruiting branches/plant and open bolls/plant in both seasons; number of main stem nodes and seed cotton yield/fad., in 2007 season only; and total fruiting sites/plant and seed index in 2008 season only”
Claim · model-written summary
IAA and/or kinetin treatments significantly decreased fruit shedding and earliness of cotton in the 2007 season.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- IAA and/or kinetine4
- Outcome
- fruit shedding% and earliness%e5
- Direction
- decreasede5
- Qualifier
- in 2007 season onlye5
- Comparator
- control treatmente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RESPONSE OF COTTON GROWTH AND YIELD”
e2“Besides the control treatment, two concentrations of each of IAA (25 and 50 ppm) and kinetin (10 and 20 ppm) and their combinations were application twice, at the start and peak of flowering stages”
e4“only some treatments of IAA and/or kinetin significantly increased plant height, numbers of fruiting branches/plant and open bolls/plant in both seasons; number of main stem nodes and seed cotton yield/fad., in 2007 season only; and total fruiting sites/plant and seed index in 2008 season only”
e5“but they significantly decreased fruit shedding% and earliness% in 2007 season only”
Claim · model-written summary
Application of 50 ppm IAA alone significantly decreased earliness of cotton in the 2007 season.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- 50 ppm IAA alonee6
- Outcome
- earliness%e6
- Direction
- decreasede6
- Qualifier
- in 2007 seasone6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RESPONSE OF COTTON GROWTH AND YIELD”
e6“Application 50 ppm IAA alone significantly decreased earliness% in 2007 season”
Claim · model-written summary
Application of 50 ppm IAA alone, or with kinetin at both levels, gave the highest plant growth parameters of cotton.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- 50 ppm IAA alonee6
- Outcome
- plant growth parameterse7
- Direction
- higheste7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RESPONSE OF COTTON GROWTH AND YIELD”
e6“Application 50 ppm IAA alone significantly decreased earliness% in 2007 season”
e7“either alone or with kinetin at both levels gave the highest values of plant growth parameters”
Claim · model-written summary
Application of 50 ppm IAA did not change fruit shedding or yield of cotton significantly.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- 50 ppm IAAe6
- Outcome
- fruit shedding and yielde5
- Direction
- no_changeinferrede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RESPONSE OF COTTON GROWTH AND YIELD”
e6“Application 50 ppm IAA alone significantly decreased earliness% in 2007 season”
e5“their effects on fruit shedding and yield did not reach the significant level”
Claim · model-written summary
Application of 25 ppm IAA alone, 20 ppm kinetin alone, or both gave the most consistently positive effects on cotton fruiting and seed cotton yield.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- 25 ppm IAA alone or 20 ppm kinetin alone or bothe1
- Outcome
- plant fruiting and seed cotton yielde1
- Direction
- increaseinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RESPONSE OF COTTON GROWTH AND YIELD”
e1“In general, the most consistently positive effects on plant fruiting and seed cotton yield were given by application 25 ppm IAA alone or 20 ppm kinetin alone or both”
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