Abstract
2 Abstract: Pre-harvest fruit drop is a serious problem of some date palm cultivars growing in hot arid regions. During 2010 and 2011 seasons, the effect of growth regulators 2,4-D (50 and 100 ppm), NAA (100 and 150 ppm), GA (100 and 150 ppm) and BA (100 and 150 ppm) application at 40 and 70 days from pollination on pre-harvest 3 fruit drop and quality of 'Rothana' and 'Ghur' dates were studied. In both cultivars, the application of growth regulators at both rates significantly decreased, but not completely control, fruit drop in both cultivars. In this respect, 2,4-D and GA were the most effective treatments followed by BA while NAA was the least effective. 3 The reduction in fruit drop resulted in a higher bunch weight in the treated fruit than the control. The high rate of BA was more effective than the low rate in decreasing fruit drop in 'Ghur' cultivar. In 'Rothana' cultivar, bunch weight was higher with 2,4-D at both rates and in GA and BA only at the high rate treatments than 3 the control. While in 'Ghur' cultivar, bunch weight was higher in all growth regulators treatments than control. The rutab percentage was lower in NAA treatments than all the other treatments, except for control in 'Ghur' cultivar. Fruit and flesh weight of 'Rothana' cultivar were higher at the high rate of 2,4-D, the low rate of GA3 and BA treatments than control. There were no consistence effects for growth regulators on the physical and chemical quality characteristics of fruit, possibly due to the large variations in fruit load among the treatments. It was concluded that, under hot arid conditions, the application of growth regulators of especially 2,4-D (50 ppm) and GA (150 ppm) at both 40 and 70 days form pollination is recommended to inhibit, but not 3 completely control, pre-harvest drop and improve fruit quality of both 'Rothana' and 'Ghur' date palm cultivars.
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Claims 16
Claim · model-written summary
Growth regulators significantly decreased fruit drop in both date cultivars without complete control.
- Taxon
- date palm
Phoenix dactyliferat0 - Treatment
- application of growth regulatorse0
- Outcome
- fruit drope0
- Direction
- decreasede0
- Qualifier
- not completely controle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both cultivars, the application of growth regulators at both rates significantly decreased, but not completely control, fruit drop in both cultivars”
t0“Date Palm”
Claim · model-written summary
2,4-D and GA were the most effective regulators for fruit-drop reduction.
- Taxon
- date palmPhoenix dactyliferat0
- Treatment
- 2,4-D and GAe0
- Outcome
- most effective treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“2,4-D and GA were the most effective treatments followed by BA while NAA was the least effective”
t0“Date Palm”
Claim · model-written summary
NAA was the least effective regulator for fruit-drop reduction.
- Taxon
- date palmPhoenix dactyliferat0
- Treatment
- NAAe0
- Outcome
- least effectivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“2,4-D and GA were the most effective treatments followed by BA while NAA was the least effective”
t0“Date Palm”
Claim · model-written summary
Reduced fruit drop under growth regulator treatments yielded higher bunch weight than control.
- Taxon
- date palmPhoenix dactyliferat0
- Treatment
- treated fruite0
- Outcome
- bunch weighte0
- Direction
- highere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The reduction in fruit drop resulted in a higher bunch weight in the treated fruit than the control”
t0“Date Palm”
Claim · model-written summary
High-rate BA reduced fruit drop more than low-rate BA in Ghur.
- Taxon
- date palmPhoenix dactyliferat0
- Material
- 'Ghur'e0
- Treatment
- high rate of BAe0
- Outcome
- fruit drope0
- Direction
- decreasinge0
- Comparator
- low ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The high rate of BA was more effective than the low rate in decreasing fruit drop in 'Ghur' cultivar”
t0“Date Palm”
Claim · model-written summary
2,4-D at both rates raised Rothana bunch weight relative to control.
- Taxon
- date palmPhoenix dactyliferat0
- Material
- 'Rothana'e0
- Treatment
- 2,4-D at both ratese0
- Outcome
- bunch weighte0
- Direction
- highere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 'Rothana' cultivar, bunch weight was higher with 2,4-D at both rates and in GA and BA only at the high rate treatments than 3 the control”
t0“Date Palm”
Claim · model-written summary
High-rate GA raised Rothana bunch weight relative to control.
- Taxon
- date palmPhoenix dactyliferat0
- Material
- 'Rothana'e0
- Treatment
- GAe0
- Outcome
- bunch weighte0
- Direction
- highere0
- Qualifier
- only at the high ratee0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 'Rothana' cultivar, bunch weight was higher with 2,4-D at both rates and in GA and BA only at the high rate treatments than 3 the control”
t0“Date Palm”
Claim · model-written summary
High-rate BA raised Rothana bunch weight relative to control.
- Taxon
- date palmPhoenix dactyliferat0
- Material
- 'Rothana'e0
- Treatment
- BAe0
- Outcome
- bunch weighte0
- Direction
- highere0
- Qualifier
- only at the high ratee0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 'Rothana' cultivar, bunch weight was higher with 2,4-D at both rates and in GA and BA only at the high rate treatments than 3 the control”
t0“Date Palm”
Claim · model-written summary
All growth regulator treatments raised Ghur bunch weight above control.
- Taxon
- date palmPhoenix dactyliferat0
- Material
- 'Ghur'e0
- Treatment
- all growth regulators treatmentse0
- Outcome
- bunch weighte0
- Direction
- highere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“While in 'Ghur' cultivar, bunch weight was higher in all growth regulators treatments than control”
t0“Date Palm”
Claim · model-written summary
NAA reduced rutab percentage in Ghur relative to other regulator treatments except control.
- Taxon
- date palmPhoenix dactyliferat0
- Material
- 'Ghur'e0
- Treatment
- NAA treatmentse0
- Outcome
- rutab percentagee0
- Direction
- lowere0
- Qualifier
- except for controle0
- Comparator
- all the other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rutab percentage was lower in NAA treatments than all the other treatments, except for control in 'Ghur' cultivar”
t0“Date Palm”
Claim · model-written summary
High-rate 2,4-D raised Rothana fruit and flesh weights over control.
- Taxon
- date palmPhoenix dactyliferat0
- Material
- 'Rothana'e0
- Treatment
- high rate of 2,4-De0
- Outcome
- Fruit and flesh weighte0
- Direction
- highere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit and flesh weight of 'Rothana' cultivar were higher at the high rate of 2,4-D, the low rate of GA3 and BA treatments than control”
t0“Date Palm”
Claim · model-written summary
Low-rate GA3 raised Rothana fruit and flesh weights over control.
- Taxon
- date palmPhoenix dactyliferat0
- Material
- 'Rothana'e0
- Treatment
- low rate of GA3e0
- Outcome
- Fruit and flesh weighte0
- Direction
- highere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit and flesh weight of 'Rothana' cultivar were higher at the high rate of 2,4-D, the low rate of GA3 and BA treatments than control”
t0“Date Palm”
Claim · model-written summary
BA raised Rothana fruit and flesh weights over control.
- Taxon
- date palmPhoenix dactyliferat0
- Material
- 'Rothana'e0
- Treatment
- BA treatmentse0
- Outcome
- Fruit and flesh weighte0
- Direction
- highere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit and flesh weight of 'Rothana' cultivar were higher at the high rate of 2,4-D, the low rate of GA3 and BA treatments than control”
t0“Date Palm”
Claim · model-written summary
Regulators showed no consistent effect on date fruit physical and chemical quality.
- Taxon
- date palmPhoenix dactyliferat0
- Treatment
- growth regulatorse0
- Outcome
- physical and chemical quality characteristics of fruite0
- Direction
- no consistence effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no consistence effects for growth regulators on the physical and chemical quality characteristics of fruit”
t0“Date Palm”
Claim · model-written summary
The authors recommended 2,4-D at 50 ppm for preharvest drop control under hot arid conditions.
- Taxon
- date palmPhoenix dactyliferat0
- Treatment
- 2,4-D (50 ppm)e0
- Outcome
- inhibit, but not 3 completely control, pre-harvest drope0
- Qualifier
- at both 40 and 70 days form pollinatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of growth regulators of especially 2,4-D (50 ppm) and GA (150 ppm) at both 40 and 70 days form pollination is recommended to inhibit, but not 3 completely control, pre-harvest drop and improve fruit quality”
t0“Date Palm”
Claim · model-written summary
The authors recommended GA at 150 ppm for preharvest drop control under hot arid conditions.
- Taxon
- date palmPhoenix dactyliferat0
- Treatment
- GA (150 ppm)e0
- Outcome
- inhibit, but not 3 completely control, pre-harvest drope0
- Qualifier
- at both 40 and 70 days form pollinatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of growth regulators of especially 2,4-D (50 ppm) and GA (150 ppm) at both 40 and 70 days form pollination is recommended to inhibit, but not 3 completely control, pre-harvest drop and improve fruit quality”
t0“Date Palm”
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