| An experiment of simulated water stress was carried out on 98 Leucaena leucocephala accessions with 15%
PEG-6000 solution as permeating medium. The results showed that the germination rate, germination index, vitality index,
the length and weight of embryonic bud and embryonic root decreased and varied considerably under PEG stress. On the
base of 7 indexes including relative germination energy, relative germination rate, relative root and bud length, relative root
and bud weight and germination drought-resistance index, the comprehensive evaluation of drought-tolerance with fuzzy
membership function method found that drought -tolerant accessions included L. leucocephala 070108001, CIAT7930,
CIAT17492, CIAT7384, 070113002, CIAT9438, CIAT17488, hybrid86, FEI19, 050307504, 070110015, 050217064 and
050302442, while non -drought -tolerant accessions included L. leucocephala 061021037, hybrid122, CIAT17474 and
070315004, and the rest 81 L. leucocephala accessions fell in middle type. |
