Genetic variability of Cedrela odorata Linnaeus results of early performance of provenances and families from Mesoamerica grown in association with coffee
Cedrela odorata Linnaeus is a highly valued forest species, chiefly because of its high quality wood. It has been severely extracted in natural forest and is considered endangered in Mesoamerica. Plantations of the species are difficult to establish because of the severe attack of the shootborer Hypsipyla grandella (Zeller) Lep., Pyralidae. Due to the wide range of distribution of the species and its high morphological variability, there are possibilities of obtaining provenances/families of good growth, which are more resistant to the attack of the Shootborer. We studied the early performance of 115 families of 21 Mesoamerican provenances of the endangered species C. odorata when grown in association with coffee. The results present a new way to conserve genetic resources and their efficient use. All the variables studied, provenance, family and coffee growing conditions, were highly significant for the performance of C. odorata. The provenances that tended to produce fewer shoots (re-sprouting of the terminal bud after attack) which is desirable to maintain a good form of the tree were Gualaca, Pacífico Sur and Tulúm. The families that presented the best performance in diameter were 6240 (PZ), 6207(PS), 6121(Tal), 78 (Almirante), and 745 (Gualaca). The growth of these families was in a range of 35-37 mm per year in diameter.
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| Format: | Texto biblioteca |
| Language: | eng |
| Subjects: | Cedrela odorata, Hypsipyla grandella, Café, Agroforestería, |
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| Summary: | Cedrela odorata Linnaeus is a highly valued forest species, chiefly because of its high quality wood. It has been severely extracted in natural forest and is considered endangered in Mesoamerica. Plantations of the species are difficult to establish because of the severe attack of the shootborer Hypsipyla grandella (Zeller) Lep., Pyralidae. Due to the wide range of distribution of the species and its high morphological variability, there are possibilities of obtaining provenances/families of good growth, which are more resistant to the attack of the Shootborer. We studied the early performance of 115 families of 21 Mesoamerican provenances of the endangered species C. odorata when grown in association with coffee. The results present a new way to conserve genetic resources and their efficient use. All the variables studied, provenance, family and coffee growing conditions, were highly significant for the performance of C. odorata. The provenances that tended to produce fewer shoots (re-sprouting of the terminal bud after attack) which is desirable to maintain a good form of the tree were Gualaca, Pacífico Sur and Tulúm. The families that presented the best performance in diameter were 6240 (PZ), 6207(PS), 6121(Tal), 78 (Almirante), and 745 (Gualaca). The growth of these families was in a range of 35-37 mm per year in diameter. |
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