ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Resistance to sprouting and postharvest seed dormancy in a collection of winter triticale.

Dolinski, R.; Kociuba, W.;

Biuletyn Instytutu Hodowli i Aklimatyzacji Roslin Year: 1999 Issue: No. 211 Pages: 153-164 Ref: 32 ref.

1999

บทคัดย่อ

Experiments were carried out in 1996-97 in Lublin on 62 forms of winter triticale from the gene bank of the Plant Breeding and Acclimatization Institute at Radzikow, Poland. Wheat cultivars Alba and Panda and rye cultivars Amilo and Dankowskie Zlote were used as standards. Ears harvested in the field were soaked in water for 15 min and placed in a high moisture chamber. Resistance to visible sprouting was estimated after 3 and 7 days. The ears from the chamber were dried and then threshed manually to separate sprouted from non-sprouted grains. Simultaneously, germination energy and viability of grains were measured on a filter paper in Petri dishes. The evaluation was repeated after 4 and 8 weeks. Lastly, together with sprouting in water, sprouting in a 10-4 M solution of abscisic acid (ABA) was evaluated. Grain responsiveness to ABA was given in relation to germination in water. No genotype was resistant to sprouting, though significant variability was observed. The most resistant forms of trit

icale sprouted at the same frequency as rye cv. Amilo. The estimates of visible sprouting in triticale ears after 3 and 7 days of incubation in moist conditions were correlated with germination energy (rxy = 0.54 and 0.462, respectively) and with germination capacity (rxy = 0.359 and 0.256, respectively). Results from the ABA tests showed that the postharvest reaction to exogenous ABA can be used in the case of triticale to select genotypes resistant to sprouting. The correlation between visible grain sprouting and ABA responsiveness coefficients was significant (rxy = -0.436 and -0.512).