Abstract
We previously found that volatile substances in Chinese chive ( Allium tuberosum ) and rakkyo ( A. chinense ) as well as garlic ( A. sativum ) stimulated budbreak in vines. But the active substances stimulating budbreak in Chinese chive and rakkyo have not yet been identified. The volatile sulfur—containing substances in fresh Chinese chive and rakkyo were identified by GC—MASS. The main volatile substances in Chinese chive and rakkyo were allyl and methyl mercaptans, and dimethyl disulfide, respectively. Cuttings witn a single bud obtained from `Kyoho' vines in dormancy were exposed to vapors of different concentrations of the three compounds for 12 or 24 hr in a desiccator, and they were kept at 25C, mounted on styrofoam plate floated in water. Diallyl disulfide, a main component in garlic, was also tested for comparison. Irrespective of concentrations and exposure periods of sulfide compounds, sprouting was greatly accelerated with diallyl disulfide. In mercaptan homologues, allyl mercaptan accelerated sprouting more effectively than in methyl mercaptan. A solution of 75% dimethyl disulfide accelerated sprouting on exposure for 12 hr, while inhibited budbreak for 24 hr.
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Claims 5
Claim · model-written summary
Diallyl disulfide greatly accelerated sprouting of grapevine cuttings, irrespective of the concentrations and exposure periods of the sulfide compounds tested.
Verbatim
t0“BREAKING BUD DORMANCY IN GRAPEVINES”
e2“Irrespective of concentrations and exposure periods of sulfide compounds, sprouting was greatly accelerated with diallyl disulfide”
Claim · model-written summary
Allyl mercaptan accelerated sprouting of grapevine cuttings more effectively than methyl mercaptan.
Verbatim
t0“BREAKING BUD DORMANCY IN GRAPEVINES”
e3“In mercaptan homologues, allyl mercaptan accelerated sprouting more effectively than in methyl mercaptan”
Claim · model-written summary
A 75% dimethyl disulfide solution accelerated sprouting of grapevine cuttings after 12 hr of exposure.
- Taxon
- GRAPEVINESt0
- Treatment
- 75% dimethyl disulfidee4
- Outcome
- sproutinge4
- Direction
- acceleratede4
- Qualifier
- on exposure for 12 hre4
Not reportedComparator
Verbatim
t0“BREAKING BUD DORMANCY IN GRAPEVINES”
e4“A solution of 75% dimethyl disulfide accelerated sprouting on exposure for 12 hr, while inhibited budbreak for 24 hr”
Claim · model-written summary
A 75% dimethyl disulfide solution inhibited budbreak of grapevine cuttings after 24 hr of exposure.
- Taxon
- GRAPEVINESt0
- Treatment
- 75% dimethyl disulfidee4
- Outcome
- budbreake4
- Direction
- inhibitede4
- Qualifier
- for 24 hre4
Not reportedComparator
Verbatim
t0“BREAKING BUD DORMANCY IN GRAPEVINES”
e4“A solution of 75% dimethyl disulfide accelerated sprouting on exposure for 12 hr, while inhibited budbreak for 24 hr”
Claim · model-written summary
The main volatile substances of Chinese chive and rakkyo were identified as allyl and methyl mercaptans, and dimethyl disulfide, respectively.
Verbatim
e5“The main volatile substances in Chinese chive and rakkyo were allyl and methyl mercaptans, and dimethyl disulfide, respectively”
The same questions in other papers
dimethyl disulfide · phenology · VitisResults differ
2 in the opposite direction
- positive
- positive
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.