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Registration of KX2‐Hawaii, Interspecific‐Hybrid Leucaena
Author(s) -
Brewbaker James L.
Publication year - 2008
Publication title -
journal of plant registrations
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.316
H-Index - 21
eISSN - 1940-3496
pISSN - 1936-5209
DOI - 10.3198/jpr2007.05.0298crc
Subject(s) - leucaena , biology , forage , leucaena leucocephala , hybrid , interspecific hybridization , agronomy , selection (genetic algorithm) , botany , horticulture , artificial intelligence , computer science
KX2‐Hawaii (Reg. No. CV‐281, PI 647963) ( Leucaena hybrid) is a tropical, multipurpose, woody forage legume developed at the College of Tropical Agriculture and Human Resources (CTAHR) of the University of Hawaii. It was derived from hybrids made in 1976 between Leucaena leucocephala (Lam.) de Wit and L. pallida Britton & Rose, followed by six cycles of recurrent mass selection. Each cycle involved 2‐ to 4‐yr growth of ∼2000 plants pollarded quarterly. All trees were eliminated except self‐sterile segregants with high forage‐regrowth vigor and with high tolerance of the psyllid ( Heteropsylla cubana Crawford). Approximately 120 remaining trees were chosen as parents for the next cycle of selection. KX2‐Hawaii was released by CTAHR in 2007.