Abstract
Abstract. Rachmawati D, Maryani MM, Kusumadewi S, Rahayu F. 2019. Survival and root structure changes of rice seedlings in different cultivars under submergence condition. Biodiversitas 20: 3011-3017. Submergence affects plant growth and fitness in natural and agricultural ecosystem. Plant survival to submergence is strongly influenced by the water level and duration of submergence. The objective of this study was to determine the survivalysiological and root anatomical changes of two rice cultivars seedlings to submergence The experiment used completely randomized design with three factors, cultivar (IR-64’ and ‘Inpara 5’), depth and duration of submergence. Depth of submergence consisted of 3 levels: without, partial and complete submergence. Fourteen days old seedlings were treated for 5, 10 and 15 days of submergence. The observed parameters were seedling survival, chlorophyll content, soluble sugar and starch content, plant biomass, and root anatomical structure. The results showed that seedlings survival of ‘IR-64’ and ‘Inpara 5’ decreased by increasing depth and duration of submergence. Increasing depth of submergence decreased chlorophyll content, soluble sugar content and plant biomass. Anatomically, depth and duration of submergence showed a greater increased in root cortex thickness, aerenchyma tissue diameter and the percentage of cortex to be aerenchyma of rice ‘IR-64’ and ‘Inpara 5’. Fifteen days of complete submergence significantly decreased seedlings survival and increased the diameter of aerenchyma in both ‘IR-64’ and ‘Inpara 5’.
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Claims 9
Claim · model-written summary
Survival of both rice cultivars decreased with greater submergence depth and duration.
- Taxon
- rice
Oryza sativat0 - Material
- ‘IR-64’ and ‘Inpara 5’e0
- Treatment
- increasing depth and duration of submergencee0
- Outcome
- seedlings survivale0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings survival of ‘IR-64’ and ‘Inpara 5’ decreased by increasing depth and duration of submergence”
t0“rice seedlings”
Claim · model-written summary
Greater submergence depth decreased chlorophyll content.
- Taxon
- riceOryza sativat0
- Treatment
- Increasing depth of submergencee0
- Outcome
- chlorophyll contente0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing depth of submergence decreased chlorophyll content, soluble sugar content and plant biomass”
t0“rice seedlings”
Claim · model-written summary
Greater submergence depth decreased soluble sugar content.
- Taxon
- riceOryza sativat0
- Treatment
- Increasing depth of submergencee0
- Outcome
- soluble sugar contente0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing depth of submergence decreased chlorophyll content, soluble sugar content and plant biomass”
t0“rice seedlings”
Claim · model-written summary
Greater submergence depth decreased plant biomass.
- Taxon
- riceOryza sativat0
- Treatment
- Increasing depth of submergencee0
- Outcome
- plant biomasse0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing depth of submergence decreased chlorophyll content, soluble sugar content and plant biomass”
t0“rice seedlings”
Claim · model-written summary
Submergence depth and duration increased root cortex thickness in both cultivars.
- Taxon
- riceOryza sativae0
- Material
- ‘IR-64’ and ‘Inpara 5’e0
- Treatment
- depth and duration of submergencee0
- Outcome
- root cortex thicknesse0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“depth and duration of submergence showed a greater increased in root cortex thickness, aerenchyma tissue diameter and the percentage of cortex to be aerenchyma of rice ‘IR-64’ and ‘Inpara 5’”
t0“rice seedlings”
Claim · model-written summary
Submergence depth and duration increased aerenchyma tissue diameter in both cultivars.
- Taxon
- riceOryza sativae0
- Material
- ‘IR-64’ and ‘Inpara 5’e0
- Treatment
- depth and duration of submergencee0
- Outcome
- aerenchyma tissue diametere0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“depth and duration of submergence showed a greater increased in root cortex thickness, aerenchyma tissue diameter and the percentage of cortex to be aerenchyma of rice ‘IR-64’ and ‘Inpara 5’”
t0“rice seedlings”
Claim · model-written summary
Submergence depth and duration increased the percentage of cortex becoming aerenchyma.
- Taxon
- riceOryza sativae0
- Material
- ‘IR-64’ and ‘Inpara 5’e0
- Treatment
- depth and duration of submergencee0
- Outcome
- percentage of cortex to be aerenchymae0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“depth and duration of submergence showed a greater increased in root cortex thickness, aerenchyma tissue diameter and the percentage of cortex to be aerenchyma of rice ‘IR-64’ and ‘Inpara 5’”
t0“rice seedlings”
Claim · model-written summary
Fifteen days of complete submergence significantly reduced seedling survival in both cultivars.
- Taxon
- riceOryza sativat0
- Material
- ‘IR-64’ and ‘Inpara 5’e0
- Treatment
- Fifteen days of complete submergencee0
- Outcome
- seedlings survivale0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fifteen days of complete submergence significantly decreased seedlings survival and increased the diameter of aerenchyma in both ‘IR-64’ and ‘Inpara 5’”
t0“rice seedlings”
Claim · model-written summary
Fifteen days of complete submergence increased aerenchyma diameter in both cultivars.
- Taxon
- riceOryza sativat0
- Material
- ‘IR-64’ and ‘Inpara 5’e0
- Treatment
- Fifteen days of complete submergencee0
- Outcome
- diameter of aerenchymae0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fifteen days of complete submergence significantly decreased seedlings survival and increased the diameter of aerenchyma in both ‘IR-64’ and ‘Inpara 5’”
t0“rice seedlings”
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