Abstract
Alfalfa ( Medicago sativa L.) plants were found to contain water‐soluble substances that inhibited the germination and seedling growth of alfalfa ( Chung and Miller 1990, Agron. J. 87, 762—767 ). Tsuzuki et al. (1999, Rep. Kyushu Branch Crop Sci. Soc. Japan 65, 39—40 ) discovered allelochemicals in alfalfa plants that could have adverse effects on the growth of some lowland weeds. This study was conducted to investigate varietal differences in allelopathic potential in alfalfa plants. Eight common varieties of Japanese alfalfa ( Medicago sativa L.), namely Batasu, Hisawakaba, Kitawakaba, Makiwakaba, Natsuwakaba, Lucerne, Tachiwakaba and Yuba, were grown by conventional methods in the Experimental Field of the Crop Science Laboratory, Faculty of Agriculture, Miyazaki University. Aqueous extracts of both fresh and dried material of alfalfa plants of all varieties significantly inhibited both germination and growth of lettuce ( Lactuca sativa L.). Leachates from germinating seeds of almost all alfalfa varieties inhibited elongation of the radicle but produced a negligible increase in germination and only slightly inhibited elongation of the hypocotyl of lettuce plants. Results demonstrated that the degree of inhibition of germination and growth of lettuce varied with the variety of alfalfa. In particular, Lucerne was identified as having the strongest allelopathic potential of the varieties studied. The results suggested that the allelopathic potential of alfalfa might be relating to a gene.
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Claims 8
Claim · model-written summary
Fresh alfalfa extracts significantly inhibited lettuce germination and growth.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- Aqueous extracts of both freshe0
- Interactor
- alfalfa
Medicago sativae0other - Outcome
- germination and growth of lettucee0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aqueous extracts of both fresh and dried material of alfalfa plants of all varieties significantly inhibited both germination and growth of lettuce”
t0“Alfalfa”
Claim · model-written summary
Dried alfalfa extracts significantly inhibited lettuce germination and growth.
- Taxon
- lettuceLactuca sativae0
- Treatment
- dried material of alfalfa plantse0
- Interactor
- alfalfaMedicago sativae0other
- Outcome
- germination and growth of lettucee0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aqueous extracts of both fresh and dried material of alfalfa plants of all varieties significantly inhibited both germination and growth of lettuce”
Claim · model-written summary
Seed leachates from almost all varieties inhibited lettuce radicle elongation.
- Taxon
- lettuceLactuca sativae1
- Organ / stage
- radiclee0
- Treatment
- Leachates from germinating seeds of almost all alfalfa varietiese0
- Interactor
- alfalfaMedicago sativae0other
- Outcome
- elongation of the radiclee0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leachates from germinating seeds of almost all alfalfa varieties inhibited elongation of the radicle”
e1“of lettuce plants”
Claim · model-written summary
Seed leachates produced a negligible increase in lettuce germination.
- Taxon
- lettuceLactuca sativae2
- Treatment
- Leachates from germinating seeds of almost all alfalfa varietiese1
- Outcome
- germinatione0
- Direction
- increasee0
- Qualifier
- negligiblee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“produced a negligible increase in germination”
e1“Leachates from germinating seeds of almost all alfalfa varieties”
e2“of lettuce plants”
Claim · model-written summary
Seed leachates slightly inhibited lettuce hypocotyl elongation.
- Taxon
- lettuceLactuca sativae0
- Organ / stage
- hypocotyle0
- Treatment
- Leachates from germinating seeds of almost all alfalfa varietiese1
- Outcome
- elongation of the hypocotyle0
- Direction
- inhibitede0
- Qualifier
- slightlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“slightly inhibited elongation of the hypocotyl of lettuce plants”
e1“Leachates from germinating seeds of almost all alfalfa varieties”
Claim · model-written summary
Inhibition of lettuce germination and growth differed by alfalfa variety.
- Taxon
- lettuceLactuca sativae0
- Material
- variety of alfalfae0
- Interactor
- alfalfaMedicago sativae0other
- Outcome
- inhibition of germination and growth of lettucee0
- Direction
- variede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“degree of inhibition of germination and growth of lettuce varied with the variety of alfalfa”
Claim · model-written summary
Lucerne had the strongest allelopathic potential among varieties.
- Taxon
- AlfalfaMedicago sativat0
- Material
- Lucernee0
- Outcome
- allelopathic potentiale0
- Direction
- strongeste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lucerne was identified as having the strongest allelopathic potential of the varieties studied”
t0“Alfalfa”
Claim · model-written summary
The authors suggested that alfalfa allelopathic potential might relate to a gene.
- Taxon
- alfalfaMedicago sativae0
- Gene
- a genee0
- Outcome
- allelopathic potentiale0
- Qualifier
- might be relatinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the allelopathic potential of alfalfa might be relating to a gene”
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See all 30 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.