Abstract
A new nurturing method was studied using pieces cut from storage roots to reduce the time-consuming and laborious works (raising, preparing, and transplanting of cut sprouts), which accounts for about 60% of the total working hours in sweet potato production by the conventional method. The experiments were conducted in 1997 and 1998 using 1– and 10–g (fresh weight) cut pieces from storage roots (cultivar ; Koganesengan). Five kinds of growth regulators were applied at the concentrations ranging from 0 to 200 mg L–1 to promote rooting and shooting from the pieces. After the treatment with growth regulators, the pieces were subjected to an antiseptic curing treatment, and then incubated on wet vermiculite at 30°C. Rooting was effectively induced by IAA, and shooting by ABA, within one to two weeks. The plantlets were developed from 10–g pieces with periderm after the treatment with ABA, and were nurtured for 10, 30 and 50 days. They vigorously grew with no transplanting injury after being planted in the field in early May. They were harvested in late October and were compared for shoot growth and productivity with the control (the conventional method using cut sprouts). The plantlets nurtured for 50 days achieved the highest yield and the best qualities and did not show the thickening of mother roots obserbed in direct planting using whole storage roots. In conclusion, the new nurturing method is superior to conventional methods in both productivity and quality. However, there are still several problems to be solved, such as low shooting rate and so on.
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Claims 7
Claim · model-written summary
IAA effectively induced rooting of sweet potato storage-root pieces within one to two weeks.
- Taxon
- sweet potato
Ipomoea batatase2 - Treatment
- IAAe1
- Outcome
- Rootinge1
- Direction
- effectively inducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e1“Rooting was effectively induced by IAA, and shooting by ABA, within one to two weeks”
e2“sweet potato production”
Claim · model-written summary
ABA induced shooting of sweet potato storage-root pieces within one to two weeks.
- Taxon
- sweet potato
Ipomoea batatase2 - Treatment
- ABAe1
- Outcome
- shootinge1
- Direction
- inducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e1“Rooting was effectively induced by IAA, and shooting by ABA, within one to two weeks”
e2“sweet potato production”
Claim · model-written summary
Plantlets nurtured for 50 days achieved the highest yield compared with the control.
- Taxon
- sweet potato
Ipomoea batatase3 - Treatment
- nurtured for 50 dayse1
- Outcome
- yielde1
- Direction
- higheste1
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e1“The plantlets nurtured for 50 days achieved the highest yield and the best qualities”
e2“were compared for shoot growth and productivity with the control”
e3“sweet potato production”
Claim · model-written summary
Plantlets nurtured for 50 days had the best quality compared with the control.
- Taxon
- sweet potato
Ipomoea batatase3 - Treatment
- nurtured for 50 dayse1
- Outcome
- qualitiese1
- Direction
- beste1
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e1“The plantlets nurtured for 50 days achieved the highest yield and the best qualities”
e2“were compared for shoot growth and productivity with the control”
e3“sweet potato production”
Claim · model-written summary
Plantlets grew vigorously with no transplanting injury after planting in the field.
- Taxon
- sweet potato
Ipomoea batatase3 - Outcome
- vigorously grewe4
- Qualifier
- no transplanting injurye4
- Setting
- in the fielde4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e3“sweet potato production”
e4“They vigorously grew with no transplanting injury after being planted in the field in early May”
Claim · model-written summary
Nurtured plantlets did not show thickening of mother roots, unlike direct planting of whole storage roots.
- Taxon
- sweet potato
Ipomoea batatase3 - Treatment
- pieces cut from storage rootse6
- Outcome
- thickening of mother rootse5
- Direction
- decreaseinferrede5
- Comparator
- direct planting using whole storage rootse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e3“sweet potato production”
e5“did not show the thickening of mother roots obserbed in direct planting using whole storage roots”
e6“using pieces cut from storage roots”
Claim · model-written summary
The new nurturing method is superior to conventional methods in productivity and quality of sweet potato.
- Taxon
- sweet potato
Ipomoea batatase3 - Treatment
- new nurturing methode7
- Outcome
- productivity and qualitye7
- Direction
- superiore7
- Comparator
- conventional methodse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e3“sweet potato production”
e7“the new nurturing method is superior to conventional methods in both productivity and quality”
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See all 7 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.