Abstract
Osha ( Ligusticum porteri ) is a Rocky Mountain native frequently used as a medicinal herb. It is currently harvested largely from the wild. Studies have been under way since 2001 to find ways to propagate and produce the plant. To potentially increase rooting success of crown cuttings of osha, two different rooting hormones were used, each at two concentrations. Treatments were controls, 2500 ppm, and 5000 ppm solutions each of indole-3-butyric acid (IBA) and α-naphthalene acetic acid (NAA). Cuttings were soaked in deionized water or treatment solutions for 2 min. After soaking cuttings were stuck in sterilized sand in 725-mL 2 containers, one cutting per container. Containers were placed on a mist propagation bench at 21 °C in a completely randomized design under natural light and day lengths. Data taken were days to visible root and shoot, and presence or absence of root formation after 50 days. Results indicated only one of 70 cuttings (<1%) produced a shoot. Roots formed on 14% of control cuttings, 64% in 2500 ppm IBA, 86% in 5000 ppm IBA, 36% in 2500 ppm NAA, and 14% in 5000 ppm NAA. Days to rooting ranged from 14.9 (2500 ppm IBA) to 29.0 (5000 ppm NAA). Due to considerable variation in days to rooting, and the number of cuttings that did not root, analysis of variance showed no differences among treatments. Frequency analysis indicated differences among treatments in root presence or absence. The 2500 and 5000 ppm IBA treatments showed more root formation than the controls or either NAA treatment. This indicates IBA may enhance rooting of osha crown cuttings.
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Claims 10
Claim · model-written summary
One of 70 osha cuttings produced a shoot.
Not reportedTaxon
Verbatim
e0“Results indicated only one of 70 cuttings (<1%) produced a shoot.”
Claim · model-written summary
Control cuttings rooted at 14%.
Not reportedTaxon
Verbatim
e0“Roots formed on 14% of control cuttings”
Claim · model-written summary
Rooting reached 64% with 2500 ppm IBA.
Not reportedTaxonComparatorDirection
Verbatim
e0“64% in 2500 ppm IBA”
Claim · model-written summary
Rooting reached 86% with 5000 ppm IBA.
Not reportedTaxonComparatorDirection
Verbatim
e0“86% in 5000 ppm IBA”
Claim · model-written summary
Rooting reached 36% with 2500 ppm NAA.
Not reportedTaxonComparatorDirection
Verbatim
e0“36% in 2500 ppm NAA”
Claim · model-written summary
Rooting reached 14% with 5000 ppm NAA.
Not reportedTaxonComparatorDirection
Verbatim
e0“14% in 5000 ppm NAA.”
Claim · model-written summary
Days to rooting ranged from 14.9 with 2500 ppm IBA to 29.0 with 5000 ppm NAA.
Not reportedTaxon
Verbatim
e0“Days to rooting ranged from 14.9 (2500 ppm IBA) to 29.0 (5000 ppm NAA).”
Claim · model-written summary
Analysis of variance found no differences among treatments in days to rooting.
Not reportedTaxon
Verbatim
e0“analysis of variance showed no differences among treatments.”
Claim · model-written summary
Frequency analysis found treatment differences in root presence.
- Outcome
- differences among treatments in root presence or absencee0
Not reportedTaxon
Verbatim
e0“Frequency analysis indicated differences among treatments in root presence or absence.”
Claim · model-written summary
Both IBA doses produced more rooting than controls or NAA.
- Treatment
- 2500 and 5000 ppm IBA treatmentse0
- Outcome
- root formatione0
- Direction
- moree0
- Comparator
- the controls or either NAA treatmente0
Not reportedTaxon
Verbatim
e0“The 2500 and 5000 ppm IBA treatments showed more root formation than the controls or either NAA treatment.”