Claim · model-written summary
50 ppm NAA gave a slight inhibition of growth of December King chrysanthemum plants compared with control.
Verbatim
t0“chrysanthemum flower”
e1“slight inhibition of growth of plants of “December King” was seen in the lot with 50ppm of NAA”
e2“The first lot was applied with 50ppm of NAA, the second lot with 100ppm of NAA, and third lot was control”
Title
Studies on the delaying of chrysanthemum flower by the spray of the growth substances. (III)
Y. TSUKAMOTO Journal of the Japanese Society for Horticultural Science 1957. doi:10.2503/jjshs.26.192
Other claims from this paper (15)
- Intervention effect 50 ppm NAA delayed budding of chrysanthemum December King by 17 days in the 13th pot and 5 days in the first pot compared with control.
- Intervention effect 100 ppm NAA delayed budding of chrysanthemum at the same rate in all plants compared with control.
- Association The light effect for delaying chrysanthemum flowering decreases as distance from the light source increases, due to reduced light intensity.
- Intervention effect 100 ppm NAA gave a heavy inhibition in the lot compared with control.
- Intervention effect In Yellow Boyce chrysanthemum both NAA-treated lots showed heavy inhibition compared with control.
- Intervention effect In Yellow Boyce chrysanthemum the NAA-treated plants did not differentiate flower buds and showed a rosette habit compared with control.
- Association In control plants the budding dates were later for pots farther from the light source, with the 10th pot budding on Oct. 12 and the first pot on Nov. 16.
- Intervention effect Auxin-treated chrysanthemum plants had delayed flowering dates compared with control.
- Intervention effect The first-pot plants treated with 50 ppm NAA flowered on the same date as control.
- Association In control and 50 ppm NAA lots, earlier flowering was associated with shorter stems.
- Observation Flowers opened before the last of December had no difference in number of florets.
- Observation Flowers opened after late January had slightly fewer florets.
- Intervention effect Auxin treatment did not notably change stem length, flower size or number of florets compared with control.
- Intervention effect Auxin treatment did not notably change number of leaves compared with control.
- Recommendation The authors recommend auxin application for delaying chrysanthemum flowering as practical, and selecting a vigorous variety.