Germination responses of Jatropha curcas L. seeds to storage and aging

Effects of pre-sowing treatments on Jatropha curcas seed germination and seedling growth

“…On the contrary, warm stratification at 37°C induced an increase in aboveground seedling growth since, after 35 days from the sown, seedlings showed a significantly higher expansion of both cotyledon and primary leaf size. Furthermore, in shell cracking plus water stratification treated seedlings, an antagonistic , 2009;Moncaleano-Escandon et al, 2013). Amongst the tested treatments, warm stratification treatment may be preferred to the other treatments since it expressed a good performance on seed germination and promotes the seedling growth.…”

“…Its basic agronomic needs are only partially understood, the growing and management practices are not enough documented for a lot of areas of new introduction, and the environmental effects should more deeply investigated (Achten et al, 2010a, b, c;Contran et al, 2013;Yamada and Sentelhas, 2014). Studies on vegetative (cutting) or generative (seed) propagation of J. curcas, representing a critical stage in the plant-life cycle, have been carried out so far (Ginwal et al, 2005;Achten et al, 2008;Kumar and Sharma, 2008;Islam et al, 2009;Severino et al, 2010;Windauer et al, 2012;Moncaleano-Escandon et al, 2013).…”

“…Some authors report on a loss of seed viability and germinability after medium and long term storage (Duong et al, 2013;Moncaleano-Escandon et al, 2013), while others suppose that the presence of seed coat, may be the responsible of a physical dormancy, and furthermore generates the need to remove this inhibition by pre-sowing treatments (Baskin and Baskin, 1998;Islam et al, 2009;Windauer et al, 2011).…”

“…Furthermore, positive results were reached for seed of various tropical tree species, previously treated with hot water, which is considered one of the cheapest, easiest and replicable techniques to induce seed dormancy-breaking (Wang and Hanson, 2008). Only few studies were found in literature on the effects of pre-sowing treatments on the growth of J. curcas seedlings (Islam et al, 2009;Pompelli et al, 2010;Moncaleano-Escandon et al, 2013).…”

Comparison of Chemical Composition and Growth of Amaranth (Amaranthus hypochondriacus) between Greenhouse and Open Field Systems

“…After 10 days, the percentage of germinated and un-germinated grains was evaluated (Moncaleano-Escandon et al, 2013). The popped grain test was conducted by placing a given number of randomlyobtained grains (300) on the surface of a preheated pan.…”