Abstract
In a succession of seed harvests of carrot, the highest percentage and most rapid germination was obtained from seed harvested 51 days after anthesis (DAA) when dried by conditioning at 25°C and 60% RH for one week and from seeeds harvested 65 or 79 DAA with or without conditioning treatment. Seed from these harvests had reached maximum weight when dried, had embryos of maximum length and were considered mature. The germinaton of seed from these treatments was unaffected by a mixture of the gibberellins A4 and A7 (GA4/7) applied in the incubation medium. Seed harvested 37 DAA also gave maximum percentage germination when it was both conditioned and incubated in GA4/7 solution. Seed harvested earlier than this germinated poorly. Germination times of both mature and immature seed were reduced after storage for 18 months but there was no response to GA4/7.
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Abbreviations
- ABA:
-
abscisic acid
- DAA:
-
days after anthesis
- GA:
-
gibberellin
References
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Tucker, W.G., Gray, D. The effect of seed drying and gibberellin treatment on the germination performance of developing carrot seed. Plant Growth Regul 4, 363–370 (1986). https://doi.org/10.1007/BF00024936
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DOI: https://doi.org/10.1007/BF00024936