S532 : The effect of priming and super absorption on yield and some of growth indices of cow-pea at different irrigation period
Thesis > Central Library of Shahrood University > Agricultural Engineering > MSc > 2020
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Abstarct: In order to investigate the effects of different priming and superabsorbent treatments on the growth and yield of cowpea under different irrigation period, an experiment was carried out as split plot factorial baxsed on randomized complete block design with three replications in 2019 in the research farm of the Faculty of Agriculture, Shahroud University of Technology. The experiment include: Irrigation period as the main factor in three levels (each 7 days, 10 days and 14 days) and superabsorbent treatments at two levels (non-use and use at the rate of 150 kg per hectare) and priming on three levels (no priming (control), hydropriming and hormone priming with salicylic acid) as sub-plot. In this study, native seeds of Bastam region were used. The results showed that drought stress was significantly affected stem height, 1000-seed weight, yield and chlorophyll b and reduced these traits. This treatment increased the amount of grain protein, anthocyanin and peroxidase enzyme. Superabsorbent significantly reduced the amount of carbohydrates and peroxidase. The interaction between superabsorbent treatments with irrigation period showed a significant effect on potassium, sodium, flavonoids and catalase. Priming treatments also had positive and significant effects on cowpea. Priming increased traits such as stem height, 1000-seed weight, yield, sodium, chlorophyll a, b and total, anthocyanin and catalase and decreased flavonoid content. The interaction between priming treatments with irrigation period increased the amount of soluble carbohydrates. Also, the interaction between superabsorbent and priming treatments increased the number of grains in the pod and decreased the amount of grain protein. The interaction between irrigation period × superabsorbent × priming treatments on plant dry weight, number of pods per plant, relative content of leaf water, carotenoids and proline was significent. The effects of moisture stress in cowpea reduced by priming and superabsorbent treatments. Also, among the different treatments, the highest effect was related to hormone priming with salicylic acid.
Keywords:
#Salicylic acid #Priming hormone #Hydrogel #Drought stress Keeping place: Central Library of Shahrood University
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