Abstract
An experiment was carried out to elucidate the relationship of cone and seed traits on juvenile and adult growth of Casuarina equisetifolia FORST. & FORST.f. Cones and seeds were collected from 18 selected trees. Samples of 10 cones and 25 seeds were taken in 4 replications to measure 2D surface area, length, breadth, weight, roundness and aspect ratio. Five seedlings in 4 replications from each seedlot were planted in randomized block design at 2 m spacing. Progeny height and diameter were recorded at juvenile (18 months after sowing ‐ 18 MAS) and mature (60 months after sowing ‐ 60 MAS) stages. Significance test and estimation of variability, heritability and genetic advance were carried out. The seed and cone morphological characters were found to have high heritability and genetic advance values than tree growth characters. Correlation of cone or seed traits on progeny growth characters and path analysis of seed traits on diameter at 60 MAS were carried out. The 100 seed weight was found to have significant correlation consistently on progeny growth characters both at juvenile and mature stages. Shape characters like roundness and aspect ratio also showed significant correlation on progeny growth. Juvenile-adult correlation was established with diameter growth of juvenile on both height and diameter growth at 60 MAS. Seed 2D surface area had high direct and indirect effect on diameter at 60 MAS. Identification of better seed sources or grading of seeds may be carried out based on seed weight and/or size and/or shape to get better progenies.
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Claims 6
Claim · model-written summary
Seed and cone morphology had higher heritability and genetic advance than tree growth traits.
- Taxon
- Casuarina equisetifolia
Casuarina equisetifoliat0 - Outcome
- heritability and genetic advance valuese0
- Direction
- highe0
- Comparator
- tree growth characterse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The seed and cone morphological characters were found to have high heritability and genetic advance values than tree growth characters”
t0“Casuarina equisetifolia”
Claim · model-written summary
Hundred-seed weight correlated significantly with juvenile and mature progeny growth.
- Taxon
- Casuarina equisetifoliaCasuarina equisetifoliat0
- Material
- 100 seed weighte0
- Organ / stage
- juvenile and mature stagese0
- Outcome
- progeny growth characterse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 100 seed weight was found to have significant correlation consistently on progeny growth characters both at juvenile and mature stages”
t0“Casuarina equisetifolia”
Claim · model-written summary
Seed roundness and aspect ratio correlated significantly with progeny growth.
- Taxon
- Casuarina equisetifoliaCasuarina equisetifoliat0
- Material
- roundness and aspect ratioe0
- Outcome
- progeny growthe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shape characters like roundness and aspect ratio also showed significant correlation on progeny growth”
t0“Casuarina equisetifolia”
Claim · model-written summary
Juvenile diameter correlated with mature height and diameter at 60 months.
- Taxon
- Casuarina equisetifoliaCasuarina equisetifoliat0
- Organ / stage
- juvenilee0
- Outcome
- height and diameter growth at 60 MASe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Juvenile-adult correlation was established with diameter growth of juvenile on both height and diameter growth at 60 MAS”
t0“Casuarina equisetifolia”
Claim · model-written summary
Seed two-dimensional surface area had strong direct and indirect effects on diameter at 60 months.
- Taxon
- Casuarina equisetifoliaCasuarina equisetifoliat0
- Organ / stage
- Seede0
- Outcome
- diameter at 60 MASe0
- Direction
- highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed 2D surface area had high direct and indirect effect on diameter at 60 MAS”
t0“Casuarina equisetifolia”
Claim · model-written summary
The authors recommend selecting seed sources or grading seeds by weight, size or shape to obtain better progeny.
- Taxon
- Casuarina equisetifoliaCasuarina equisetifoliat0
- Outcome
- better progeniese0
- Qualifier
- seed weight and/or size and/or shapee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Identification of better seed sources or grading of seeds may be carried out based on seed weight and/or size and/or shape to get better progenies”
t0“Casuarina equisetifolia”