Abstract
Background: Chitin and chitosan are natural products extracted from shrimp shells. They are non-toxic, biocompatible and biodegradable which favors many applications in agricultural domain. Moreover, chitin and chitosan are known as stimulators of photosynthetic rates and enhance pants growth through minerals contains (C, O, N ….). In the present study, these co-products are evaluated for their ability to stimulate the germination and growth of Lycopersicon esculentum L., Capsicum annuum L. and Solanum melongena L. Methods: The experiments were conducted at Ibn Tofail University-Kenitra, between July 2016 to January 2018. The experiments are carried out by using a germination test for the three seeds. On the other hand, the in vivo test is used to determine the effect of the biopolymers on plant growth (length, fresh and dry weights of aerial and root parts, number and weight of the obtained fruits). Result: In vitro studies reveal a promoter action of chitosan and the mixture chitin-chitosan on increasing seed germination percentage by 16%, 34% and 22%. Thus, at both 25, 50 and 100 mg/l of chitin or chitosan, increase vigor index, shoot length and root is obtained. In vivo, the effect of chitin and chitosan is limited to stimulation of the lengths, fresh and dry weights of plants. However, a highly significant increase in the number and weight of the fruits is marked by the weekly soil amendment by the chitin-chitosan mixture at 25 mg/l and 100 mg/l.
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Claims 4
Claim · model-written summary
Chitosan and the chitin-chitosan mixture increased seed germination percentage by 16%, 34% and 22% in vitro.
- Taxon
- Lycopersicon esculentum L., Capsicum annuum L. and Solanum melongena L.
Capsicum annuum
Solanum lycopersicum
Solanum melongenae0 - Treatment
- chitosan and the mixture chitin-chitosane1
- Outcome
- seed germination percentagee1
- Direction
- increasinge1
- Value
- 16%, 34% and 22%e1
- Setting
- In vitroe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these co-products are evaluated for their ability to stimulate the germination and growth of Lycopersicon esculentum L., Capsicum annuum L. and Solanum melongena L.”
e1“In vitro studies reveal a promoter action of chitosan and the mixture chitin-chitosan on increasing seed germination percentage by 16%, 34% and 22%”
Claim · model-written summary
Chitin or chitosan at 25, 50 and 100 mg/l increased vigor index, shoot length and root growth in vitro.
- Taxon
- Lycopersicon esculentum L., Capsicum annuum L. and Solanum melongena L.Capsicum annuumSolanum lycopersicumSolanum melongenae0
- Treatment
- 25, 50 and 100 mg/l of chitin or chitosane2
- Outcome
- vigor index, shoot length and roote2
- Direction
- increasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these co-products are evaluated for their ability to stimulate the germination and growth of Lycopersicon esculentum L., Capsicum annuum L. and Solanum melongena L.”
e2“at both 25, 50 and 100 mg/l of chitin or chitosan, increase vigor index, shoot length and root is obtained”
Claim · model-written summary
In vivo, chitin and chitosan stimulated the lengths, fresh and dry weights of plants.
- Taxon
- Lycopersicon esculentum L., Capsicum annuum L. and Solanum melongena L.Capsicum annuumSolanum lycopersicumSolanum melongenae0
- Treatment
- chitin and chitosane3
- Outcome
- lengths, fresh and dry weights of plantse3
- Direction
- stimulatione3
- Setting
- In vivoe3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these co-products are evaluated for their ability to stimulate the germination and growth of Lycopersicon esculentum L., Capsicum annuum L. and Solanum melongena L.”
e3“In vivo, the effect of chitin and chitosan is limited to stimulation of the lengths, fresh and dry weights of plants”
Claim · model-written summary
Weekly soil amendment with the chitin-chitosan mixture at 25 and 100 mg/l significantly increased fruit number and weight.
- Taxon
- Lycopersicon esculentum L., Capsicum annuum L. and Solanum melongena L.Capsicum annuumSolanum lycopersicumSolanum melongenae0
- Treatment
- weekly soil amendment by the chitin-chitosan mixture at 25 mg/l and 100 mg/le4
- Outcome
- number and weight of the fruitse4
- Direction
- increasee4
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these co-products are evaluated for their ability to stimulate the germination and growth of Lycopersicon esculentum L., Capsicum annuum L. and Solanum melongena L.”
e4“a highly significant increase in the number and weight of the fruits is marked by the weekly soil amendment by the chitin-chitosan mixture at 25 mg/l and 100 mg/l”
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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.