Variation in Photosynthetic Traits and Correlation with Growth in Teak (Tectona grandis Linn.) Clones
| Autor: | Zaizhi Zhou, Kunnan Liang, Enarth Maviton Muralidharan, Guihua Huang, Yang Guang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
040101 forestry
0106 biological sciences Germplasm biology chlorophyll fluorescence Forestry 04 agricultural and veterinary sciences gas exchange lcsh:QK900-989 Heritability biology.organism_classification Photosynthesis 01 natural sciences growth trait Horticulture early selection Seedling Tectona Genetic variation genetic variation lcsh:Plant ecology 0401 agriculture forestry and fisheries Chlorophyll fluorescence 010606 plant biology & botany |
| Zdroj: | Forests, Vol 10, Iss 1, p 44 (2019) Forests Volume 10 Issue 1 |
| ISSN: | 1999-4907 |
| Popis: | In order to interpret the patterns of genetic variation of photosynthesis and the relationships with growth traits within gene resources of teak (Tectona grandis Linn.), gas exchange, and chlorophyll fluorescence parameters, growth traits of plants in nursery and field trials were measured for 20 teak clones originated from different countries. The results show that there was abundant genetic variation in gas exchange, chlorophyll fluorescence, and growth among the teak clones. The measured traits were found to have generally high heritability (h2) except for intercellular concentration of carbon dioxide (CO2) (Ci). The net photosynthetic rate (Pn), seedling height, and individual volume of wood were significantly correlated with each other, and seedling height was significantly correlated with plant height in field trials, suggesting that Pn and seedling height can be useful in teak breeding. Teak clones 7029, 71-5, 7219, 7412, and 7122, and provenances 3070, 3074, and 3071 had higher photosynthetic rates, and can be regarded as a key resource in teak improvement programs. This work provides useful information for teak breeding and germplasm resource management. |
| Databáze: | OpenAIRE |
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