Restoration of morphological features of Globodera pallida after storage in formalin.

lattice design with nine replicates. All accessions were of special interest in the breeding program. Included as a susceptible check was the commercial variety 'Valery.' One row of 'Valery' was planted as a border around the experimental area. Rhizomes were examined 12 and 19 months after planting, and average infestation per plot was rated on the same scale of 0 to 4. Results are in Table 1, Experiment 1I. T h e following accessions, or cultivar groups, were either tolerant or resistant to R. similis (root lesion rating less than 1.00): M. acuminata subsp malaccensis, the 'Pisang Batuau' cultivar group, the 'Pisang Jari Buaya' group except for 'Morong Datu' and 'Pisang Rotan' ; and 'Pisang Edor Kuda' and 'Pisang Lidi ' cultivar groups. T h e otller 42 accessions were susceptible (root lesion rating more than 1.00). The second examinat ion of the plants in Experiment II showed that two accessions 'Pisang Ekor Kuda' and 'Pisang Kermian' of the 'Pisang Lidi ' group had higher root-lesion ratings (both 1.78) than earlier. Ratings of other cnltivars were unchanged. T h e results confirm that resistance or 4, October 1978