Study on attributes of Carica papaya cv Eksotika 2 for quality improvement

Papaya seed germination is often reported to be slow and erratic, and this problem has been associated with inhibitory compounds in the sarcostesta and seed coat, as well as seed dormancy (Andreoli and Khan, 1993). In general, 70% germination via the standard germination method using paper is considered to be satisfactory, in contrast with the germination standards set for other crops, which are generally higher. The Malaysian Standard by SIRIM set an even lower minimum germination percentage of 60%. Experience in MARDI, meanwhile, showed discrepancies among batches of seeds produced by the usual practice of seed production in which seeds are graded by floatation and via separation by sieving. Germination percentage varies in the 60 to 85% range. In addition, another problem with papaya seeds is decreasing viability (germinability) upon storage. Therefore, this study aimed to understand the relationship between seed attributes, in particular, seed mass and anatomy, as well as seed viability and vigour. (Copied from article)