2026-09-25T09:49:03Zhttps://mro.massey.ac.nz/server/oai/requestoai:mro.massey.ac.nz:10179/140612025-11-11T14:19:02Zcom_10179_294col_10179_296
DSpace at Massey University
author
Hopping, Murray Edwin
2018-11-15T01:20:39Z
2018-11-15T01:20:39Z
1968
http://hdl.handle.net/10179/14061
Q112836060
https://www.wikidata.org/wiki/Q112836060
Application of the growth retardant succinic acid
2,2-dimethyl hydrazide as a foliar spray to seven year old Gravenstein apple trees at full bloom and eleven days after, reduced extension growth in comparison to that on untreated trees. This retardation was characterized by a reduction in internode length and node number without formative effects on leaf area or observable leaf chlorophyll. Shoot and petiole dry weight was decreased with Alar treatment; leaf dry weight increased. Fruit size and weight was increased at 1000 and 2000 ppm Alar treatment; the converse relationship occurred at 4000 ppm Alar. Alar treatment improved apple keeping quality and enhanced fruit skin colouration.
Acidic gibberellin-like substances extracted from shoot apices decreased with Alar treatment and this reduction was accompanied by an increase in 'abnormal' gibberellin-like substances. Acidic, neutral, and basic auxins extracted from shoot apices also decreased with Alar treatment although evidence was not as conclusive as that shown by gibberellin-like substances.
A study of the interaction between Alar, auxin (IAA) and
gibberellin (GA 3) on Avena 1st internode sections was used as the basis for a suggested mode of action of Alar on apple extension growth.
en
The Author
Plant growth inhibiting substances
Succinic acid
Apples
An investigation into the mode of action of alar (succinic acid, 2, 2-dimethyl hydrazide) on apples : a thesis ... for the degree of Master of Agricultural Science.
Thesis
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
URL
https://mro.massey.ac.nz/bitstreams/d039a251-fab7-411f-bfc2-914f69bf9806/download
File
MD5
c8b4e219e148a0136f598cb273173da4
481364
application/pdf
01_front.pdf
URL
https://mro.massey.ac.nz/bitstreams/0157ecca-df28-4bb1-b557-5fa1330a3b98/download
File
MD5
feb2ce9479c2b7619194d3b97dc10a86
8732970
application/pdf
02_whole.pdf
URL
https://mro.massey.ac.nz/bitstreams/0e72e398-037a-4df8-b0f7-aac8d221070a/download
File
MD5
3487445dee4e928486ee3170573fce75
10178
text/plain
01_front.pdf.txt
URL
https://mro.massey.ac.nz/bitstreams/f734b393-d7b7-480a-b5d7-f0f385a129ce/download
File
MD5
97177d45f5fc2f62697a4ded6c5b73fb
100134
text/plain
02_whole.pdf.txt