seed dormancy | An-Najah Staff

Germination of 'Arabequina' Olive Seeds as Affected by Chemical Scarification, Hot Water Treatment and Endosperm Tissue

Mon, 2013-12-23 08:18 — Hassan Abu Qaoud

Journal Title, Volume, Page:

Jordan Journal of Agricultural Sciences, Vol 1, No 1

Year of Publication:

2005

Link:

https://journals.ju.edu.jo/JJAS/article/view/1283

Authors:

Hassan Abu-Qaoud

Department of Plant Production and Protection, Faculty of Agriculture, An-Najah National University, Nablus, Palestine

Current Affiliation:

Department of Plant Production and Protection,Faculty of Agriculture and Veterinary Medicine, An Najah National University, Nablus, Palestine

[email protected]

Preferred Abstract (Original):

The effect of scarifying olive Olea europaea L. cv. Arabequina endocarp containing seeds (stony seeds) with H2SO4 and NaOH at two concentrations (0.1N and 1N) and two soaking periods (24 hrs and 48 hrs) as well as water for 24 and 48 hrs and hot water 50oC and 100oC for 24 and 84 hrs on their germination was investigated. To study the effect of the endosperm on seed germination, in vitro embryo culture of the same cultivar was performed. The germination potential of isolated embryos was compared to that of complete seeds and to sections of seeds including 2/3, 1/2, and 1/3 seed sections. The highest significantly germination percentage (60%) was obtained when the stone seeds were scarified with 0.1 N H2SO4 for 24 hrs after 115 days of planting. Treating the stony seeds with either H2SO4 for 24 hrs or water at 50o C and tap water for 24 and 48 hrs raised germination percentage over other treatments. Soaking the stony seeds with H2SO4 for 48 hrs improved germination percentage but with lower effect than H2SO4 for 24 hrs. The excised embryos and the 1/2 seed portion started to germinate after one week of culturing. The highest embryo germination percentage (70%) was recorded after one month of planting. Both 1/2 and 1/3 seed’s sections exhibited higher germination percentage than the germination of 2/3 seed section or whole seed. The results of this work indicated a pronounce effect of the endocarp and endosperm on olive seed germination.

Effect of Scarification, Gibberellic Acid ‎and Stratification on Seed Germination of ‎Three Pistacia Species

Thu, 2013-12-19 14:40 — Hassan Abu Qaoud

Journal Title, Volume, Page:

An - Najah Univ. J. Res. (N. Sc.) Vol. 21

Year of Publication:

2007

Link:

http://scholar.najah.edu/publication/journal-article/effect-scarification-gibber...

Authors:

Hassan Abu-Qaoud

Department of Plant Production & Protection, Faculty of Agriculture, An-Najah National University, Nablus, Palestine.

Current Affiliation:

Department of Plant Production and Protection,Faculty of Agriculture and Veterinary Medicine, An Najah National University, Nablus, Palestine

[email protected]

Preferred Abstract (Original):

Germinability of P. atlantica Desf., P. palaestina (Bioss) Post. and P. lentiscus L. seeds as influenced by various treatments was investigated. This included four treatments: Acid scarification for 15 minutes, soaking of acid scarified seeds in 1000 ppm GA3 for 24 hours, stratification of seeds at 5Co for 30 days and control (untreated seeds). Significantly, the highest germination (60%) was obtained for P. Palestrina acid scarified plus cold stratified seeds over the control of the three Pistacia species (15, 10, 0%), this percentage (60) was on the same level of significance with the other Pistacia species. Scarifies seeds of P. lentiscus resulted in 13.3% germination, scarified plus GA3 soak of P. lentiscus and P. atlantica Desf. (34, 39.9%), and scarified plus cold stratified P. lentiscus (32%) seeds. Early seed germination was obtained with seeds of P. lentiscus after one week of incubation with scarified plus GA3 (6%) and scarified seeds of P. palaestina (5%), other treated seeds of the three species started germination after two weeks. P. palaestina seeds continued with the highest germination percentage thereafter. Significantly, the longest mean time to complete germination (MTG) was obtained from the control of the three Pistacia species (27.94, 24.50, 30. 04), Scarified P. atlantica (25.84), and scarified plus GA3 soak of P. atlantica (26.25) as compared with the other treatments for the three Pistacia species which were all in the same level of significance.