| 000 | 014740000a22003250004500 | ||
|---|---|---|---|
| 904 | _aBCO | ||
| 905 | _aC | ||
| 908 | _aJ | ||
| 909 | _aAS | ||
| 914 | _aFORES | ||
| 082 | 0 | 4 | _a40033 |
| 100 | 1 |
_982704 _aKEMP, R.H. |
|
| 260 | _c1987 | ||
| 500 | _a18ref. Sum.(En) | ||
| 520 | _aAn international provenance research programme on Central American Pines was started in 1969 and international provenance trials are now in progress. Study of the natural forests of both species has confirmed their potential value for plantation in many tropical countries, especially on seasonally dry and infertile sites. Variation observed both within and between the natural populations offers possibilities for improved adaptation to site and production requirements. Some natural populations are in danger of depletion or extinction and further international action is needed to conserve and develop their genetic resources | ||
| 650 | 1 | 4 |
_9158544 _aPINUS CARIBAEA |
| 650 | 1 | 4 |
_9158584 _aPINUS OOCARPA |
| 650 | 1 | 4 |
_92108 _aAMERICA CENTRAL |
| 691 |
_9158544 _aPINUS CARIBAEA |
||
| 691 |
_9158584 _aPINUS OOCARPA |
||
| 691 |
_922991 _aCENTRAL AMERICA |
||
| 692 | _aPINUS CARIBAEA | ||
| 692 | _aPINUS OOCARPA | ||
| 692 | _aAMERIQUE CENTRALE | ||
| 773 | 0 |
_tCommonwealth Forestry Review (Inglaterra) _d1987 _gv. 66(4) p. 317-324 |
|
| 040 |
_aCR-TuBCO _cCR-TuBCO _bEs |
||
| 245 | 1 | 0 | _aInternational provenance research on Central American Pines |
| 942 | _cANA | ||
| 003 | CR-TuBCO | ||
| 999 |
_c54002 _d54002 |
||