Bwa-yo - Société Audubon Haiti

130 Lisina... Delen
Figure 15.11 L. leucocephala ssp. glabrata x L. diversifotia hybrid (KX3) stand managed
for seed production in the Cul-de-Sac Plain.
teristics. Hybrid stands generally were culled of individuals exhibiting strong characteristics
ofthe K8 pollen parent, favoring the K156 seed parent and its tolerance ofhigher
elevations.
Despite L. leucocephala subsp. glabrata's known self-compatibility, gene exchange
with the local subspecies is possible and could playa role in the development of genotypes
less desirable than the giant variety (Zarate, 1987). Natural outcrossing of L. leucocephala
subsp. glabrata, as the pollen parent, with L. diversifotia subsp. diversifolia
is common where the two species co-exist, and produces progeny with a variable range
of traits common to uncontrolled crosses.
In 1991, several new species of Leucaena from the OFI collections in Central
America, were introduced in both high- (> 1200 m) and low-elevation sites. These
included additional L. diversifolia subsp. diversifotia seed lots to broaden the K156
genetic base for high-elevation areas, L. esculenta subsp. esculenta, L. esculenta subsp.
paniculata, L. lanceolata, L. macrophylla subsp. nelsonii, L. pulverulenta, and L. salvadorensis.
The military coup of 1991 forced suspension of continued germplasm
improvement activities, with most of the new species requiring re-introduction.