Breaking Seed Dormancy: Revisiting Heat-treatment Duration on Germination and Subsequent Seedling Growth of Oil Palm (EIaeis guineensis Jacq.) Progenies

Abstract

The role of duration of various varying heat-treatment durations on the germination of oil palm seeds is well documented. We investigated the effects of different heat-treatment durations on germination and seedling growth of 10 oil palm progenies. Batches of 250 oil palm seeds from each progeny were heat-treated at a temperature of 39° C ± 1° C for 60, 80, 100 and 120 days, to break dormancy. Seedling growth parameters measured included rate of leaf production, leaf area and relative leaf area growth rate, rate of leaf elongation, and diameter of base of seedlings stem. Germination rates for 60, 80, 100, and 120 days combined were highest for progenies A5240 and A5221 (> 80 %) but very low (< 5%) for progenies A5228 and A5268. Progenies A5240, A5291, A5234 and A5221 were found to be the most outstanding progenies in terms of germination. Prolonged heat-treatment resulted in reduced germination and less vigorous seedling growth. Heat-treatment of 60 days gave the best seedling growth performance and seedling growth was adversely affected when heat-treatment exceeded 100 days. The study indicated that heat-treatment duration of 60 days and not 80 days was effective for breaking dormancy of the oil palm seeds and successful seedling growth. This study shows that oil palm seeds germination can be obtained successfully within a short period (60 days) of heat-treatment compared to the current 80 days application by PAMOL Plantation Ltd. Lobe estate. These results could provide significant solutions to the numerous demands of oil palm seeds by local farmers.

Embryonic dormancy in seeds of Bactris gasipaes Kunth (peach-palm)

“…In addition, Elaeis guineensis Jacq. seeds from different progenies under the same pre-germination treatment exhibited the same variation, from 5.0% to 85.9% (Fondom et al, 2010). Furthermore, for E. edulis and Syagrus romanzoffiana (Cham.)…”

Seed biometric parameters in oil palm accessions from a Brazilian germplasm bank

“…bras., Brasília, v.49, n.8, p.604-612, ago. 2014 DOI: 10.1590/S0100-204X2014000800004 interspecific hybrids (E. guineensis x E. oleifera), characterized by reduced height, which increases the period of economic exploitation of the culture, and especially by resistance to oil palm bud rot, the most important disease of the continent (Cunha et al, 2012;Moreno-Chacón et al, 2013;Gomes Junior et al, 2014). However, for effective results in genetic improvement, the knowledge of intraspecific genetic variability is essential.…”

“…Seed morphology can provide information on germination and dormancy, caused by, for example, an impermeable tegument or by the immaturity of the embryo. Additionally, proportions between endocarp and kernels, as well as measurements of fruit sphericity, are important parameters for the development of machines for oil palm processing (Fondom et al, 2010;Myint et al, 2010;Akinoso & Raji, 2011). In genetic improvement, the variability in seed parameters can be used in the study of intra-and interspecies relationships to provide data about genetic similarity and to establish divergent groups for selection in crossbreeding.…”

THE ROLE OF NAA, GA3, ACTIVATED CHARCOAL, AND SUCROSE ON ZYGOTIC EMBRYOS CULTURE OF HYBRID OG OPEN POLLINATED CLONE (Elaeis guineensis JACQ. X Elaeis oleifera)

“…Uji viabilitas dilakukan untuk mengetahui viabilitas atau daya hidup benih menggunakan larutan Tetrazolium. Metode pengujian menggunakan larutan Tetrazolium 1% (2,3,5-triphenyl tetrazolium chloride) dengan inkubasi benih dalam larutan tersebut selama 6-8 jam (Fondom et al, 2010). Viabilitas benih ditentukan dari pola pewarnaan pada benih sesuai dengan metode yang dipublikasikan oleh Maquiné (2014) dengan ketentuan pewarnaan kelas 1: Vigor Sangat Tinggi, yaitu seluruh embrio terwarna yang homogen (merah atau merah muda) warnai 100%, kelas 2: Vigor Tinggi, yaitu embrio terwarna homogen sebesar 75%, kelas 3: Vigor Medium, yaitu embrio terwarna homogen sebesar 50%, kelas 4: Tidak Vigor, yaitu embrio hanya terwarna sangat sedikit bahkan tidak terwarna.…”