Estimate the Plastochron in Crambe Edaphoclimatics Conditions Capitão Poço No Pará

Base temperature and plastochron are influenced by the development phase in biquinho pepper cultivars

“…Vitis vinifera, 40.4 and 49.7 °C day per node were found for the "Cabernet Sauvignon" and "Chardonnay" varieties (Zeist et al, 2016). For Crambe abyssinica, under climatic conditions of Capitão Poço, in the of Pará (North of Brazil), the estimation of plastochron was different for the periods from emergence to flowering, fruiting and senescence, respectively (Oliveira et al, 2015), in this case, For both evaluation phases (vegetative and reproductive) it was possible to observe a reduction in the value of plastochron, when there was an increase in air temperature; this is due to the increase in the plant's metabolic activities (Bahuguna & Jagadish, 2015), accelerating its development. Under higher temperature conditions, along with higher radiation, more photosynthetic activity occurs when plant water requirements are met (Sage & Kubien, 2007); In this work the highest plastochron was observed during S1, that is, in this period the development of the culture was slower, because it was necessary to accumulate a higher thermal sum for the emission of nodes, due to the lower temperatures observed during this time.…”